Oral delivery of antibodies directly to intestinal tissue would allow IBD treatment without systemic exposure or injections. Sorriso VHH single domain antibodies are engineered for stability among intestinal and inflammatory proteases, enabling oral dosing. SOR102 is an anti-TNF/IL-23p19 bi-specific formulated into room-temperature stable enteric-coated mini-tablets. On exposure to intestinal trypsin, the SOR102 trypsin-labile central linker is cleaved, liberating each monomer for intestinal tissue entry. SOR102 was evaluated in healthy volunteers and ulcerative colitis (UC) patients in a Phase 1 first-in-human study (NCT06080048). SOR102 was safe and well tolerated with minimal systemic exposure. However, consistent micromolar levels of active monomers were detected in UC patient feces and monomers were measured in UC colonic tissues. In the SOR102 BID arm, there was a strong alignment between UC clinical activity, tissue [drug], and pharmacodynamic outcomes. Thus, SOR102 delivered local TNFa/IL-23 inhibition within the inflamed GI tissue of UC patients, while limiting systemic exposure.
Neonatal Fc receptor is a popular target for treatment of autoimmune disorders due to its role in maintaining IgG levels. Fc-ABDEG and albumin-binding VHH were combined to develop next-generation FcRn blockers with improved IgG clearance. Step-wise engineering was applied to optimize position and number of VHHs, their affinity to albumin, and the linker connecting it to Fc-ABDEG. Novel FcRn-based cellular assays and effects in human FcRn transgenic mice are included.
Bio-Rad’s Pioneer™ Antibody Discovery Platform features a vast Fab library (>2 × 10¹¹ sequences), optimized for selection and developability. Using SpyDisplay and the TrailBlazer™ platform, it enables rapid discovery of lead candidates, including GPCR-targeting antibodies with performance comparable to clinical benchmarks. We’ll also present SpyLock, which is a novel approach for fast generation and high-throughput functional screening of bispecific antibodies.
Antibody Drug Conjugates (ADCs) are rapidly changing the clinical treatment of cancer, and these sophisticated therapeutics have multiple interactions within the tumor microenvironment (TME) that are important for drug design. In this talk, I will share our experimental and computational results highlighting the impact of the TME on the ADC, including macrophage and protease effects, and the impact of the ADC on the TME, such as immune activation.
Add-on this optional pre-conference workshop to your main conference registration package and gain a comprehensive overview of antibody engineering in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Workshop registration begins at 7:30 am
- Morning Break: ~10:30-10:50
WORKSHOP OVERVIEW
Today’s wealth of knowledge of antibody structures will be reviewed along with the genetics of diversity generation, to give insights into the best strategies for improving function. There is particular emphasis on the choice of a functional assay to effectively monitor the changes in a desired property, and the use of functional enrichment steps where a library approach is employed. Not only is amino acid sequence amenable to engineering, but glycan structures and other modifications may also be engineered. The course will focus on the engineering and enhancement of antibodies and antibody-like scaffolds. Examples will include work on antibody fragment affinity improvement by 100-fold to low pM affinity. Also, the engineering of bispecific antibodies by diverse approaches and the adaptation to generate Chimeric Antibody Receptor (CAR) constructs will be discussed. Expression platforms for producing antibodies for testing and for manufacture will also be covered. A background in biochemistry and molecular biology is useful, as the course is designed to progress rapidly from simple to advanced concepts.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC
WORKSHOP AGENDA
- Functions amenable to engineering: affinity, specificity, stability, solubility, immunogenicity
- The measure of success: functional assays
- Engineering by design
- Engineering by random mutation
- Designed libraries
- Display technologies
- Improving manufacturing by protein engineering methods
- Glycosylation engineering – function and homogeneity
- Other protein modifications
- Immunogenicity engineering
- Bispecific antibodies
- CAR-T strategies
- Expression of antibodies and fragments for discovery and testing
- Manufacturing platforms for antibodies and fragments
NOTE: The afternoon workshop “Introduction to Bispecific & Multispecific Antibodies” is an excellent complement to the morning introduction course.
The Singularity Suite represents a new class of genetically engineered mouse models designed exclusively for single-domain antibody (sdAb) discovery. Each model features a streamlined, minimalist humoral immune system optimized to generate high-diversity, high-fidelity sdAbs with exceptional stability, solubility, and developability. The Singularity Suite encompasses an unprecedented scaffold spectrum including human VH, human Vκ, camelid VHH, shark VNAR, dog VH, cat VH, and mouse VH, enabling broad utility across therapeutic, diagnostic, and animal-health applications. Integrated with high-throughput, sequence-first workflows, these platforms enable rapid generation of potent, developable modular binders against complex targets, and are accessible through flexible licensing and service partnerships.
We will discuss the pros and cons of bispecific T-cell engagers (TCEs) relative to CAR-T cell therapies as well as protein-engineering strategies that can be employed to address limitations of TCEs for cancer therapy.
Gyes Bv is a science-driven biotech start-up committed to exploring new frontiers in antibody therapeutics. We developed the Multispecific Antibody Platform, which we use to discover and develop precision multifunctional antibodies that build on novel insights in avidity engineering. Here I will discuss our progress in designing antibodies that become conditionally active upon binding to combinations of targets co-expressed on select cell populations.
The measles vaccine is a global success story, yet what human antibodies are elicited by this vaccine and their structures remain unknown. We generated a large panel of human mAbs from a vaccine, mapped epitopes biochemically and by cryoEM and found potent neutralization and in vitro protection via complementary mechanisms. mAbs against both the attachment antigen H and fusion antigen F are protective and offer therapeutic cocktails for treatment or prevention.
Biocytogen provides a unique, fully characterized library of fully human antibody binders targeting over 1,000 druggable proteins. Several bispecific ADC assets, utilizing a common light chain and our proprietary Top1 payload, are now in clinical trials. RenNano mice generate fully-human nanobodies for next-generation ADC.
As the field increasingly recognizes the limitations of traditional cytotoxic payloads, differentiation through novel mechanisms of action has become essential. Amanitin-based ADCs, with their unique inhibition of RNA polymerase II, exemplify this next wave of innovation, designed to overcome resistance mechanisms. The Phase I/IIa experience with HDP 101, an anti-BCMA ADC with amanitin as novel payload, provides a clear view of the translational path associated with developing a first in class ADC payload. During dose escalation and at doses below the MTD, HDP‑101 has demonstrated objective responses, including complete remissions, in patients refractory to currently available therapies, including prior treatments directed at the same target.
While IL-2 has been shown to be key cytokine for the promotion of T-cell proliferation and effector function, its clinical use for cancer immunotherapy has been limited by severe toxicities. This talk describes the pre-clinical development of REGN10597, a PD-1 targeted receptor masked wild type IL-2 that demonstrates potent in vitro and in vivo activity when targeted to PD-1 expressing T cells but lowered systemic activity in the absence of targeting.
The cell surface proteome, the surfaceome, is the major hub for cellular communication and a primary source of drug targets. We have been developing new proteomic approaches to probe the surfaceome for novel cancer-associated changes in expression, proteolysis, glycosylation, immunopeptidomes, and complexes. This has lead us to build new TCE’s, ADC’s, and extracellular targeted degraders (eTPD) to better attack the cancer surfaceome.
Artificial intelligence (AI) is transforming antibody discovery and engineering. Ailux's platform synergistically combines the best of our comprehensive wet lab, AtlaX biologics database, and three proprietary AI engines. We will explore our latest case studies that exemplify our AI-driven approach for tackling challenging targets, identifying unique functional antibodies, and achieving multi-objective optimization. This presentation provides our realistic and evidence-based perspective on the impact of AI on developing next-generation antibody therapeutics.
This talk explores how Alloy is redefining T cell engager bispecific antibody discovery through integration of precision affinity design engineering and high throughput functional characterization. By systematically tuning both CD3 and target-arm interactions, we decouple efficacy from cytokine-driven toxicity, resulting in an expanded therapeutic window and enabling safer immune engagement in oncology and autoimmunity. Leveraging a comprehensive, data-rich functional screening workflow, Alloy delivers potent, first-in-class bispecifics tailor built for real-world translational impact.
We have previously demonstrated that an IgG3 agonistic TLR4/MD2 antibody reversed acute murine Type 1 Diabetes (T1D) through induced immune tolerance. To translate this work to humans we developed novel human TLR4 agonistic antibodies, demonstrated that the IgG3 isotype and enhanced multivalency are necessary for their TLR4 signaling, and demonstrated their tolerogenic potential for treating inflammatory diseases.
Current Treg-depleting strategies often affect both tumour and effector T cells, limiting therapeutic benefit. A target-agnostic cell-panning approach using the n-CoDeR phage display library identified antibodies that selectively target tumour-associated Tregs. These antibodies recognised both familiar and novel Treg targets, including a distinct ICAM-1 domain, achieving tumour-specific Treg depletion while sparing peripheral cells. This suggests potential for improved cancer immunotherapy and supports unbiased discovery of therapeutic antibodies.
Antibody-based approaches targeting respiratory viruses such as influenza and corona have gained momentum. Traditionally, efforts have focused on systemic or subcutaneous administration. More recently, focus has shifted to intranasal administration for protection at the portal of entry. Preclinical efficacy and human safety studies have explored the challenges and advantages of local antibody delivery.
Traditional antibody discovery approaches often prioritize single objectives, failing to balance multiple properties simultaneously which yield candidates with compromised developability profiles. We present a selection framework using Pareto optimization across rank-normalized scores with hierarchical property classification. This approach generates balanced candidate shortlists with AI-assisted explanations of property trade-offs, enabling efficient identification of optimal molecules for validation while reducing costly experimental iterations and accelerating therapeutic antibody development.
AI/ML for biotherapeutics is constrained by the scale and quality of training data. In this session, Twist Bioscience will present multiple workflows for strategies to bridge this gap using high-fidelity synthetic DNA platforms and bespoke data outputs that integrates next-generation synthesis and production and characterization directly into the Design-Make-Test-Learn cycle. Case studies will illustrate how LLMs are validated using Twist “off-the-shelf” data sets, how high-throughput iterations of make-test cycles can be used to compare and train new models, and when in silico (de novo) designed libraries coupled with wet-lab panning and screening can simultaneously generate lead therapeutic candidates while also validating and training generative models. Join us to learn how scalable and innovative antibody services transform ML into a powerful engine for rapid biotherapeutic discovery.
Fibrosis can affect multiple organs in the human body and significantly threaten human health. Early diagnosis and intervention are crucial for preventing disease progression. However, very few treatments are available to patients. Next-generation medications with novel mechanisms of action are demanded to broaden the responding patient population and improve the therapeutic index. WNT1-inducible signaling pathway protein 1 (WISP1, also known as CCN4), a matricellular protein, was identified as a novel drug target for fibrosis through analysis of the transcriptomic data of human cirrhotic livers. I will present the preclinical studies of targeting WISP1 for treating tissue fibrosis.
Add-on this pre-conference training course to your main conference registration package for an additional fee and gain a comprehensive overview of antibody engineering in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Training course registration begins at 8:00am.
- Break Schedule:
- AM Break: 10:30-11:00;
- Lunch: 12:30-1:30;
- PM break: 3:00-3:30
TRAINING COURSE OVERVIEW
Today’s wealth of knowledge of protein structures will be reviewed along with the genetics of diversity generation of antibodies, to give insights into the best strategies for improving protein function. There is particular emphasis on the choice of a functional assay to effectively monitor the changes in a desired property, and the use of functional enrichment steps where a library approach is employed. Not only is amino acid sequence amenable to engineering, but glycan structures and other modifications may also be engineered. The course will focus on the engineering and enhancement of antibodies and antibody-like scaffolds. Examples will include work on antibody fragment affinity improvement by 100-fold to low pM affinity. Also, the engineering of bispecific antibodies by diverse approaches and the adaptation to generate Chimeric Antibody Receptor (CAR) constructs will be discussed. Expression platforms for producing antibodies for testing and for manufacture will also be covered. A background in biochemistry and molecular biology is useful, as the course is designed to progress rapidly from simple to advanced concepts.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC and Research Corporation Technologies
COURSE AGENDA
• Functions amenable to engineering: affinity, specificity, stability,
solubility, immunogenicity
• The measure of success: functional assays
• Engineering by design
• Engineering by random mutation
• Designed libraries
• Display technologies
• Improving manufacturing by protein engineering methods
• Glycosylation engineering – function and homogeneity
• Other protein modifications
• Immunogenicity engineering
• Bispecific antibodies
• Antibody-drug conjugates (ADCs)
• CAR-T strategies
• Expression of antibodies and fragments for discovery and testing
• Manufacturing platforms for antibodies and fragments
This session will offer perspective on what it takes to create value for biotechnology companies with a focus on early-stage (seed and Series A) therapeutics companies.
Optimizing antibodies for efficacy requires careful consideration of several factors, including biology, modality selection, ADME (adsorption, distribution, metabolism, and excretion) and developability. In this workshop, we will provide an overview of these topics and share examples to highlight their importance.
ADCs and eTPD specifically depend on efficient lysosomal trafficking for activity. Here we leveraged the well-characterized low-density lipoprotein receptor (LDLR), and engineered bispecific LDLR-targeting chimeras (LIPTACs), for efficient degradation of extracellular membrane proteins. We further developed degrader–drug conjugates that intentionally hybridize eTPD with ADCs for greater efficiency of drug payload delivery. This platform broadens the therapeutic potential of antibody-based modalities.
T cell engagers are highly potent immunotherapeutic modalities. However, their broad application is constrained by on-target, off-tumor toxicity and CRS, resulting in a narrow therapeutic index. We present the development of a conditional, dual-antigen targeting trispecific TCE (TriMab) that integrates a synapse-gated design with affinity-tuned binding arms to achieve AND-gated tumor selectivity. Our work establishes synapse-gated, dual-targeting trispecifics as a next-generation framework for engineering safer and more precise T-cell therapeutics
This presentation celebrates fifty years of hybridoma technology that ultimately led to over 200 antibody therapeutics benefiting millions of patients. The evolution of antibody formats will be traced including bispecifics, antibody-drug conjugates, and CAR T cells. Future progress will surely be accelerated by artificial intelligence including multi-parameter optimization. Advances in conditional antigen binding and targeted delivery promise to expand the reach of antibodies to previously undruggable targets and diseases.
T cell engagers (TCEs) show promise in solid tumors but are constrained by cytokine release and on-target, off-tumor toxicity. Amberstone’s T-MATE™ platform overcomes these barriers with a pH-gated, target-selective mechanism that adapts to tumor pH heterogeneity while maintaining an optimal therapeutic profile. This conditional strategy enables a new generation of TCEs that combines both safety and efficacy with broad applicability across diverse solid tumor indications.
Our logic-gated CD3 Switch-DARPins are designed to overcome current limitations of T-cell engagers, such as the lack of clean targets and poor therapeutic windows. We developed a MSLNxEpCAM-targeted Switch-DARPin that contains CD2 costimulation and a masked CD3 moiety that is released to activate T cells only when both TAAs are co-expressed on target cells. This format allows for increased tumor specificity via rational selection of tumor target combinations.
This presentation will cover the discovery and engineering of XmAb942, a potential best in class high-affinity anti-TL1A monoclonal antibody with extended half-life, and a first-in-class bispecific antibody targeting TL1A and IL-23p19. Both candidates are designed for therapeutic use in Ulcerative Colitis and Crohn’s Disease.
TCR specificity to peptide-HLA antigens is central to immunology, impacting responses in infection, autoimmunity and cancer. Achieving precise recognition while avoiding off-target reactivity is critical for effective immunity and safe therapeutic interventions. Comprehensive, proteome-wide specificity profiling of TCRs is challenging with current methods, which notably lack integrated machine learning for large-scale analysis. Here, we report a synthetic immune cell system coupled with machine learning to enable TCR functional and specificity mapping of peptide-HLA antigens at proteome-scale.
Tetraspanins are a superfamily of four-transmembrane proteins that serve as key organizers of membrane proteins and signaling complexes, playing essential roles in immune cell function. I will share our latest insights into the functions of the tetraspanins CD37 and CD20 in lymphocytes and B cell lymphoma. I will also introduce a novel immunotherapeutic platform that targets CD37 and CD20, demonstrating superior efficacy compared to current standard-of-care antibody therapies
Each antibody format introduces unique structural and functional variables that can significantly alter Fc effector activity. Assessing therapeutic antibodies on SeromYx’s high-throughput, GCLP-accredited Fc effector function platform enables empirical and format-agnostic profiling of developmental candidates. Our platform has helped uncover critical, early insights into the therapeutic activity and safety of diverse antibody formats, guiding development with data-driven decisions.
Add-on this optional pre-conference workshop to your main conference registration package and gain a comprehensive overview of bispecific and multispecific antibodies t in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Workshop registration begins at 12:30 pm
- Afternoon Break: ~ 3:30-3:50
WORKSHOP OVERVIEW
This workshop covers the key aspects of bispecific antibody design, how best to achieve desired therapeutic function, and then explores the challenges posed for manufacturing such complex molecules. The various parameters for a bispecific antibody are each examined – valency and affinity for engaging each individual target, optimum physical distances for desired binding and outcome, requirement for Fc function(s) or not, etc. A discussion of antibody formats that may be especially applicable to rapid screening of the optimum valency, affinity, spacing, etc., of each specific binding component is included. It is aimed to provide even beginners with explanations of the nomenclature and science.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC
WORKSHOP TOPICS TO BE DISCUSSED
- Review of Antibody Structure, Fc Function(s)
- Fundamental Bispecific Antibody Design Considerations
- Symmetric vs. Asymmetric Formats – Valency of Target Binding
- Is Fc Function Required for a Particular Bi-specific Antibody Therapeutic?
- Aligning Format with Desired Bispecific Antibody Function
- Examples of a Variety of Bispecific Antibody Applications, from T-Cell Engagers to crossing the blood-brain barrier
- Manufacturing Multi-subunit Bispecific Antibody Molecules
WHAT WILL YOU LEARN?
- Gain an overview of the key aspects for design parameters for Bi-specific Antibodies.
- Scientific terms and acronyms relating to Bi-specific Antibody will be defined and explained.
We developed a novel functional screening method using hyperphage display platform that allows rapid discovery of potent antiviral single domain antibodies. We benchmarked RASP against established phage ELISA and deep sequencing methods. RASP can be used either as a standalone platform or seamlessly integrated with conventional screening methods to accelerate the discovery of antiviral VHHs.
Rigaku developed an EDT technology that can image huge molecules and complexes in solution without prior information or the need for crystallization/freezing/fixation/labeling processes. This enables overnight direct epitope mapping, molecular defect and aging monitoring during culture and purification processes, nucleotide-protein quantitation of vector complexes, and observation of defects in particles using the molecular 3D image under specified conditions.
My group engineers genetic systems that dramatically accelerate the speed of mutation and gene evolution in vivo so that we can drive the rapid evolution of new biomolecular functions and prospectively watch (and systematically manipulate) the course of long gene evolutionary processes on laboratory timescales. I will share recent developments in the use of our continuous evolution system, orthogonal DNA replication system (OrthoRep), to evolve antibodies. I will discuss our efforts to affinity mature antibodies at scale along with the intersection of computational antibody design and evolution, including work focusing on prioritizing sequence space exploration to generate data for training computational models.
Alloy’s integrated antibody discovery and optimization platform combines yeast display with cell-based screening to deliver high-affinity, biologically relevant antibodies with rapid turnaround. By uniting on-cell binding validation with
quantitative affinity maturation, Alloy expands what is druggable across low copy number and structurally complex targets. This approach enables multi-parameter antibody discovery and optimization, and has demonstrated success across challenging programs, accelerating the path from initial discovery to viable therapeutic candidates.
To address critical challenges in ADC discovery, such as elucidating mechanisms of resistance and systematically identifying synergistic payload combinations, Turbine integrates transcriptomic, genomic, and protein–protein interaction data into computational “virtual cell” models. These models are trained on perturbation-response profiles to accurately recapitulate cellular behavior. In this presentation, we highlight the application of our virtual-cell–based screening framework for prioritizing synergistic payload partners, complemented by automated in vitro validation and mechanistic simulations that enable detailed interrogation of resistance pathways.
Current extracellular targeted protein degradation (eTPD) strategies primarily rely on recycling receptors and lysosomal trafficking for internalization and degradation. Here, we developed bispecific antibodies that recruit membrane-bound proteases to proteins of interest, enabling their “degradation” them via enzymatic shedding. Additionally, the induced proteolysis releases soluble ligands that may influence downstream cellular processes. This approach provides a new mechanism of eTPD and broadens the scope of antibody-based therapeutics.
Traditional antibody discovery approaches often prioritize single objectives, failing to balance multiple properties simultaneously which yield candidates with compromised developability profiles. We present a selection framework using Pareto optimization across rank-normalized scores with hierarchical property classification. This approach generates balanced candidate shortlists with AI-assisted explanations of property trade-offs, enabling efficient identification of optimal molecules for validation while reducing costly experimental iterations and accelerating therapeutic antibody development.
Bispecific antibodies (bsAbs) can enable therapeutic mechanisms, such as dual antigen targeting or receptor agonism, that are impossible using monoclonal antibodies. BsAbs with IgG-like format (bsIgG) are comprised of two unique heavy chains, each having a cognate light chain. Co-expression of these four unique polypeptides often leads to several mispaired species that are difficult to separate from the target bsIgG due to their similar biophysical properties. Here we describe a set of mutations called ProAla that exploit a the unfolded protein response pathway of cells. ProAla heavy chains are engineered with higher folding energy barriers such that only the cognate light and heavy chains can induce folding, chaperone release and secretion. The structures of the ProAla Fab and Fc regions are identical in structure to normal antibodies, enabling maintenance of half-life and function. Mispaired polypeptides fail to secrete from the cell due to enhanced interaction with the endoplasmic reticulum chaperone BiP, resulting in increased purity of secreted bsIgGs.
In this talk, we present the CHO Edge System, which integrates a glutamine synthetase (GS)-CRISPR knockout CHO host, a hyperactive transposase, libraries of characterized genetic elements to control cellular functions, and computational tools for rational vector design and multi-omics analysis. We present case studies highlighting the impact of these tools to optimize expression for both standard monoclonal and bispecific antibodies.
Here we present the development and characterization of OmniUltra transgenic chickens, a novel platform for generating human antibody therapeutics with bovine-inspired ultralong CDRH3. This platform maintains the evolutionary distance advantage of a divergent host species, enabling robust immune responses to mammalian-conserved targets, while utilizing a novel structural format to provide unique paratopes for accessing cryptic epitopes, as well as small autonomous binding units for constructing multispecifics.
This presentation will explore how Twist Biopharma Solutions leverages data-driven antibody discovery with hyperimmune and humanized mice to maximize hit rates, accelerate timelines, and improve success against even the most challenging oncology targets
Ability Biotherapeutics presents AbiLeap™ – a proprietary AI-enabled platform to systematically generate conditionally active antibodies. Trained on one of the largest therapeutic antibody databases, AbiLeap achieves unprecedented mutational reach (up to 25 amino acid changes) while retaining epitope specificity and therapeutic-ready humanness. Using AbiLeap we have generated leads against 4 targets and are pursuing IND-enabling studies by 2027.
Successful development of a T-cell engager relies on specifically localizing cytotoxicity to tumor cells of interest with minimal off-tumor activity across the body. Cartography's ATLAS and SUMMIT platforms analyze genome-wide expression profiles to optimally select single antigens and antigen pairs whose expression are restricted to cell populations of interest. This talk will discuss how these platforms have translated into the development of CBI-1214 and other T-cell engagers in Cartography’s pipeline.
Nucleome Therapeutics tackles the molecular causes of inflammatory diseases through a breakthrough approach to 3D human genetics. NTP464 is a novel inflammation checkpoint identified using Nucleome’s proprietary suite of genetic approaches. Through understanding how genetic variation in patients living with autoimmune disease impacts the genome’s physical 3D interactions with protein-coding genes, Nucleome has uncovered a profound multi-cellular orchestrator of inflammation resolution with potential to move beyond current advanced therapeutics.
The use of T-cell engagers in solid tumors is currently limited by the availability of antigens that distinguish cancerous from healthy tissues. Using a lab-integrated, AI/ML-driven antibody engineering platform, we demonstrate that potent T-cell engagers can be rapidly generated against well-known solid-tumor targets, achieving robust tumor clearance without the typical on-target toxicities. We highlight case studies featuring both avidity-based and Boolean logic-controlled T-cell engager architectures across multiple solid malignancies.
Design and Conjugation strategies to enable transformative therapies. How the CysTyr platform enables production of novel targeted combination therapies with greater efficacy and safety
Implementing high throughput developability workflows early in biologics generation guides optimized lead selection. Addressing sequence liabilities, chemical modifications, immunogenicity, and biophysical issues accelerates development and reduces failures. Complex formats like antibody-drug conjugates and bispecifics pose challenges requiring tailored strategies for successful developability and clinical outcomes.
We leverage our discoveries which show that blockade of innate immune regulatory pathways can halt and even reverse lung fibrosis. We aim to develop novel, multivalent Ab constructs that simultaneously block the activity of these profibrotic pathways.
Cell surface proteins are key regulators of cellular signaling, metabolism, and interactions with the surrounding environment. A promising approach to modulating their function is through the control of endocytosis and intracellular trafficking. Under normal physiological conditions, cells use these processes to maintain membrane protein homeostasis and attenuate signaling, yet their therapeutic potential has only recently begun to be explored. In this talk, I will discuss how bispecific antibodies can be designed to modularly control membrane protein endocytosis and signaling, including for growth factor receptors and G protein–coupled receptors, and describe the underlying mechanisms by which these molecules function, with comparisons to traditional antagonists and their potential clinical implications. I will also share mechanistic insights into Ivonescimab, an anti-PD-1/VEGF antibody, and how its mechanism may differ from the use of anti-PD-1 and anti-VEGF antibody combination therapies.
Triaging and transitioning a large panel of prospective antibody “hits-to-leads” is de-risked when biology, developability, and manufacturability attribute assessments are integrated by design. ATUM’s services for advancing discovery sequences to a manufacturable biologic with phase appropriate assessments will be outlined. These include AI and in silico screening, high-throughput transient expression for rapid material generation and developability assessment for rank ordering hits. Selected leads are transitioned to an intermediate, higher yield system for high resolution analytics and a manufacturing predictive selection process. Finally, iterative knowledge gained is seamlessly executed in a commercial manufacturing-ready cell line.
BigHat Biosciences uses AI/ML and a high speed automated wet lab to rapidly design and optimize safer, more effective therapeutic antibodies. Our platform combines machine learning with experimental data to iteratively improve candidates based on key properties such as affinity, function, and developability. We've leveraged our platform to create antibodies with enhanced functionality, such as pH selectivity, logic gating, and avidity-optimized T cell engagement, demonstrating the power of AI/ML to overcome key challenges in antibody development.
Therapeutic peptides are an important class of drugs offering advantages over both small molecules and antibodies due to their combination of high target specificity, structural flexibility, and low immunogenicity risk. Unlike traditional peptide drug discovery that relies on rational design or natural scaffolds optimized with in vitro methods, we introduce OmniUltra, a platform to generate structured peptides to human drug targets through in vivo optimization of ultra-long HCDR3 "knob" sequences in a divergent host species. We describe the isolation of knob-derived peptides as high-affinity and highly specific autonomous binding units.
Therapeutics in inflammatory indications often are limited in their efficacy. Blockade of multiple pathways by targeting multiple cytokines with a single agent is a way to enhance efficacy and benefit to patients. We describe the engineering of trispecific antibodies with high-affinity neutralization of three cytokines simultaneously. Design factors to be discussed include domain arrangement, strategies for driving correct chain pairing, and optimization for expression, stability and developability.
Degeneration of retinal neurons in mammals leads to irreversible vision loss. We discovered that Prox1, a homeobox protein, is transferred from neurons to Müller glia (MG) to suppress regeneration. Blocking this transfer with our Anti-PROX1 therapy reactivates MG’s regenerative potential. This approach successfully delayed vision loss in disease model mice, offering a promising strategy to treat retinal degenerative conditions by restoring the intrinsic repair capacity of the mammalian retina.
In this presentation, I will describe how allometric scaling from the Tg276 humanized FcRn model enables accurate early-stage projection of antibody clearance and half-life in humans. I will outline the translational performance of the model across diverse antibody formats and show how the Tg276 model supports efficient lead selection, reduces reliance on NHP studies, and accelerates therapeutic antibody development.
Targeting pHLA class I and II at therapeutic resolution has been largely restricted to approaches building on the native TCR ligand as biologics or cell therapy. We here show how the special pIX phage display system has been optimized and combined with in silico guidance and deep sequencing as a unique platform allowing TCR-Like antibodies to enter this stage beyond the current state of the art.
OASIS is a European research program dedicated to optimizing the clinical use of antibody–drug conjugates (ADCs) by addressing resistance mechanisms. Through a multimodal approach integrating spatial tumor microenvironment profiling, genomics, liquid biopsies, and artificial intelligence–driven predictive modeling, OASIS aims to identify biomarkers of response and guide patient stratification. The project brings together academic, clinical, industrial, and patient partners to accelerate precision oncology.
Gyes is a science-driven biotech focused on advancing antibody therapeutics through the rational engineering of multispecific formats. We have developed a Multispecific Antibody Platform that leverages avidity engineering to design next-generation antibodies with enhanced selectivity and controllable functionality. Our approach enables conditional activation through the combinatorial engagement of co-expressed targets on defined cell populations. This mechanism allows selective modulation of immune cell function, improving therapeutic precision while minimizing off-target activity.
Conditional logic-gated bispecific ADCs can be optimised to enable precise tumour targeting while delivering deeper and broader efficacy by integrating dual-antigen recognition. This approach enhances potency, mitigates on-target/off-tumour toxicities, and addresses intratumoural heterogeneity. The talk will highlight engineering principles, preclinical validation, and translational insights advancing this next-generation ADC modality.
Antibodies targeting human cytomegalovirus (CMV) exhibit limited efficacy due to immune evasion mechanisms, including viral receptors that capture human Fc domains. We engineered Fc variants that retain binding to host receptors but exhibit markedly reduced binding to viral Fc receptors. Antibodies with engineered Fc domains mediated enhanced CD16A activation and limited viral spread in CMV-infected fibroblasts more effectively than wild-type Fc.
We present JAM-2, a fully computational antibody design platform that produces VHH-Fc and full-length mAbs with drug-like affinity and developability. Across 16 unseen targets and in under a month, JAM-2 achieved 100% target coverage with double-digit percent bind rates and frequent picomolar to single-digit nanomolar binders from just tens of designs tested. JAM-2 also directly generated GPCR-targeting antibodies in native cellular contexts, delivering lead-quality molecules without post-hoc optimization.
Antibodies are one of the most studied molecules to date, and they have proved to be successful biotherapeutics as well as critical reagents for both basic and applied research. The wealth of information about antibodies has afforded investigators the ability to modify critical functions of antibodies through sequence-based and/or structural modifications. One key function of antibodies is to serve as a bridge between innate and adaptive components of the immune system. This is accomplished in part through engaging target antigen through the variable regions, and then engaging humoral and cellular components of the immune system through the fragment crystallizable (Fc) region. Fundamental sequence and structural insights have afforded investigators the ability to impart novel functionalities, but at times with unintended consequences. The intent of this review is to provide a historical perspective on critical insights that have informed modern Fc engineering efforts and how these efforts have led to antibodies with enhanced or novel functionalities. Discussion will also be presented on how the emerging field of computational protein engineering could provide new opportunities to modulate antibody Fc effector functions.
TfR1 shuttles show promise for CNS therapeutics, but toxicities remain limiting. We introduce a high-throughput in vivo screening method to engineer novel brain shuttles. Powered by AI and Manifold's protein barcoding technology, our approach reveals novel shuttle targets and shuttles with enhanced tissue selectivity, reduced toxicity profiles, and optimized biodistribution.
Adeno-associated virus (AAV) gene therapies face challenges in tissue-specific delivery and safety. We have developed bispecific Altibody for precise AAV retargeting to muscle and CNS. This innovative "plug-and-play" approach enhances on-target transduction efficacy and safety in mice, marking a milestone in AAV retargeting strategies for gene therapy applications.
Recent advances in generative models for protein design have greatly accelerated the computational discovery of de novo proteins that bind biological targets of interest. These advances have vastly outpaced experimental validation, creating a bottleneck for the full realization of protein design for biological applications. I will present a massively parallel synthetic biology approach to validate thousands of designs against thousands of targets, bringing us closer to using protein design to interface with biology at the scale of proteomes.
The precise depletion of immune cells is a key therapeutic strategy for a wide variety of autoimmune diseases. Recently, T cell engagers have been used to redirect T cell cytotoxicity for highly effective depletion of B cells in patients with refractory autoimmune diseases. In this lecture, I cover the development history of T cell engagers, emerging data in patients with autoimmune disease and theoretical and practical considerations for their design and use. Finally, I review emerging approaches for cell depletion and emerging targets.
The antibody molecule is a wonder of nature that connects disease targets with immune effector cells via its Y-shaped topology of three domains connected by a hinge region. We describe GEM-DIMER technology allowing us to create superdimers of two antibodies interconnected at their hinge regions by a strong non-covalent interaction. Our superdimers demonstrate cooperative binding to disease targets and immune effector cell receptors, making them ideal for human therapeutic applications.
Over the past century, our industry progressed from identifying natural products with favorable pharmacology mediated by unknown molecular mechanisms, to deliberate engineering of biologics that engage prespecified targets and alter their activities in predefined ways. The past two decades have seen the emergence of an entirely new category – multispecifics – that engage two or more targets. This elicits emergent properties that enable biologics to circumvent natural barriers to pharmacology, including rapid clearance, functional redundancy, on target/off-tissue toxicity, and lack of druggable features. I will discuss how multispecifics are recalibrating expectations of what can be achieved through pharmacotherapy.
Targeted therapy with covalent inhibitors of oncoprotein KRAS(G12C) are initially effective but typically lack durability due to cancer cell resistance. MHC presentation of the covalently modified KRAS(G12C) peptides on the cell surface creates synthetic neoantigens that can be stabilized and targeted by antibodies across HLA restriction. Conversion to T-cell engagers affords a unique combination of targeted and immune therapy.
This topic explores the revolutionary potential of the genome-edited mouse, where endogenous VH and VL genes are replaced by fully human VH and VL genes in situ, enabling the generation of fully human antibody molecules. When combined with Biointron's AbDrop microfluidic technology-enhanced single B cell screening, this approach allows for the high-throughput and efficient discovery of antibody drug molecules.
We have discovered and characterized the first-ever Nanobodies that act as positive allosteric modulators (PAMs) of clinically relevant inhibitory immune checkpoint complexes (ICCs) that enhance receptor signaling with pathway-specific and spatio-temporal precision. Such ICC PAMs open up novel therapeutic modes of intervention that ensure patient safety, even in cases of overdose, and may outperform current inhibitor-based immunotherapies, which often cause significant side effects.
We are investigating unique payloads by exploring agents that target cancer cell dependencies/vulnerabilities, or that have known or assumed safety liabilities or poor physicochemical properties that would benefit from delivery via antibodies. We will discuss early achievements in the development of these more targeted ADCs.
We have identified B cells with anti-checkpoint specificity in a subset of pre-surgical, untreated lung cancer patients. Upon single cell sorting, sequencing and reconstruction of specific BCRs, we show that these are mostly peripheral memory B cells, encoding antibodies with highly mutated CDRs, and can exhibit checkpoint blocking activity.
Despite the curative potential of cancer immunotherapy, most patients do not benefit from existing treatments. Glyco-immune checkpoints – interactions of cancer glycans with inhibitory glycan-binding receptors called lectins – have emerged as prominent mechanisms of resistance to molecular and cellular immunotherapies. I will describe development of antibody-lectin chimeras: a biologic framework for glyco-immune checkpoint blockade that is now moving toward the clinic.
Inflammation and tissue fibrosis co-exist and are causally linked to organ dysfunction. However, the molecular mechanisms driving immune-fibroblast crosstalk remain unexplored, and there are currently no approved treatments that directly target cardiac fibrosis. Using human tissues and mouse models, we delineate the functions of FAP+ fibroblasts within the heart and define immune cell crosstalk and transcriptional events that govern their differentiation. From a broader perspective, we show that bispecific T-cell engaging antibodies targeting FAP+ fibroblasts suppress cardiac fibrosis and have similar effects in other organs. These findings highlight the therapeutic potential of cell specific targeting of defined fibroblasts subsets.
The development, delivery, and efficacy of therapeutic antibodies are strongly influenced by multiple types of molecular interactions mediated by their variable regions, including both specific and non-specific interactions. Here we report interpretable machine-learning models for identifying high-affinity mAbs with optimal combinations of low off-target binding and low self-association, and demonstrate that these co-optimal antibodies display drug-like properties both in vitro and in vivo.
This presentation will explore how Adimab has revolutionized antibody discovery, growing from an innovative startup into a leading platform technology company. We will examine key technological breakthroughs in our platform, focusing on synthetic antibody library evolution, advances in multispecific generation, and novel approaches to developability optimization. Join us to learn how Adimab's engineering-driven approach is shaping the future of therapeutics.
Bispecific T cell engagers (TcEs) must create an effective immunological synapse, yet how their structural features control potency is poorly defined. We combined solution structural analyses and synapse imaging on supported lipid bilayers to show that both intermembrane distance and complex rigidity critically determine TcE activity. Formats producing close contacts and reduced molecular flexibility enhanced co-stimulatory interactions and cytotoxic responses. These findings provide actionable design principles for next-generation TcE therapeutics.
The efficiency of complement activation among IgG subclasses is primarily determined by their capacity to form oligomers upon binding to antigens. This oligomerization facilitates the multivalent engagement of the C1 complex, thereby initiating the classical complement pathway. These insights offer a mechanistic understanding that could inform the design of antibody therapies with enhanced effector functions.
Antibodies discovered in vivo have many advantages such as high affinity and low polyspecificity/reactivity with superior developability profiles compared with those identified through in vitro methods. However, immunization-driven approaches have historically faced challenges with complex targets that are evolutionarily conserved. We present a case study in which genetic immunization successfully generated a panel of antibodies against a 100% conserved, multi-subunit, cell-surface heterocomplex, and the epitope diversity was revealed through in silico mapping. This study highlights that breaking tolerance in mice can be effectively achieved and integration of in silico tools facilitate rapid decision making for downstream lead selection.
Over the last several years, China has rapidly emerged as a leader in global drug development, now surpassing the US in the number of active clinical trials. This advancement is the result of a decade long Chinese national strategy to invest in and develop a leading biopharmaceutical industry. The implications of these changes for US biotech and biopharma will be discussed.
The ion channel Kv1.3 is well known to be important in the activation of effector-memory T cells. We have developed a unique ultralong CDR3 antibody based on the cow scaffold that potently inhibits Kv1.3 activity. Surprisingly, this reagent was also found to inhibit important immune functions in monocytes and macrophages, revealing a novel role for Kv1.3 in the innate immune system.
PRO-XTEN™ masked T cell engagers (TCEs) are conditionally activated immune therapeutics designed to exploit dysregulated protease activity within the tumor microenvironment. This approach enables tumor-selective TCE activation while minimizing systemic toxicity. The XTEN mask serves a dual function: masking TCE activity and extending the half-life of the masked molecule, while the proteolytically activated TCE exhibits a short half-life, creating conditional pharmacokinetics that enhance tumor exposure while limiting systemic active drug circulation. Preclinical studies demonstrated: (1) robust masking with ~10,000-fold reduction in cytotoxicity in vitro; (2) potent anti-tumor efficacy in vivo at doses comparable to unmasked TCE controls; and (3) >100-fold improvement in maximum tolerated dose (MTD) in non-human primates. These findings support a significantly enhanced therapeutic window through tumor-specific activation and conditional PK. Clinical trials evaluating PRO-XTEN™ TCEs targeting HER2, PSMA, and EGFR are currently underway, with early data demonstrating the translational potential of this protease-activated platform.
Next-gen immunotherapies demand seamless integration of multimodal data—sequence, structure, assay, and biophysical insights. Traditional tools can’t keep pace. This talk introduces a new paradigm: a Multimodal Scientific Intelligence Platform built to unify antibody/protein workflows, enhance collaboration, and accelerate AI-ready discovery. Includes a case study from a major biopharma showing how multimodal workflows improve outcomes in multispecific antibody engineering.
PRO-XTENTM masked T cell engagers (TCEs) are conditionally active by exploiting the dysregulated protease activity in tumors. Preclinically, PRO-XTENTM TCEs demonstrated 1) Strong masking of in vitro cytotoxicity by approximately 4 logs; 2) Potent in vivo efficacy at doses similar to the efficacious doses of unmasked TCE controls; and 3) Increased MTDs in NHP by greater than >100 fold. Clinical trials of PRO-XTEN TCEs targeting HER2, PSMA and EGFR are currently ongoing.
We have commenced efforts to engineer knottins and cyclins as general-purpose binders for a variety of applications where their rugged durability would be enabling (e.g. oral delivery, cytoplasmic delivery, radioligand therapy). Occupying a parameter space intermediate between antibodies and small molecule drugs, these molecules present new challenges and opportunities for protein engineering.
The inability of diverse biomolecules to readily penetrate the blood-brain barrier is a key limitation to their use in research, diagnostic, and therapeutic applications. We are developing bispecific antibodies that engage either CD98hc or transferrin receptor, and efficiently transport biomolecules into the CNS. We will discuss our recent work on protein delivery to the CNS, including cytokines for modulating the immune environment in the brain for therapeutic applications.
Radiotherapy remains a cornerstone of cancer treatment, yet its efficacy is often limited by normal tissue toxicity and tumor resistance. This talk will highlight a translational strategy to enhance radiotherapy by leveraging antibody-drug conjugates (ADCs) for targeted delivery of cytotoxic agents. I will present preclinical data demonstrating how ADCs directed against radiation-inducible tumor antigens potentiate tumor response, offering a precision-based approach to improve outcomes in solid tumors.
New antibody therapies span a wide range of indications with varying development costs and complexity. Partnering programs validates technology platforms, brings resources to bear, and raises funds, but dilutes ownership and long-term value. Novel antibody case studies from a range of program development stages and company sizes will be critically discussed.
Despite advances in cancer therapeutics, new protein targets and targeting approaches for drug development are needed. We developed a high-resolution proximity labeling technology using photocatalyst-generated reactive probes to label discrete cell surface protein microenvironments. Utilizing our platform to identify proteins inherently proximal to EGFR, we identified CDCP1. This led to the development of IDP-001, a novel bispecific ADC targeting EGFR and CDCP1. Identification and characterization of IDP-001 will be presented.
Generative AI is redefining what’s possible in biologics discovery — enabling scientists to explore protein sequence space more efficiently, design higher-performing molecules, and accelerate the path from concept to candidate. At Cradle, we are developing intuitive software tools that allow protein engineers to directly leverage generative AI models within their existing workflows. This presentation will showcase how Cradle’s technology enables scalable and reproducible protein design, combining advanced AI architectures with user-centered design to reduce cycle times and ultimately create better biologics.
Influenza A viruses pose a persistent public health challenge due to antigenic diversity, rapid evolution, and zoonotic reservoirs with pandemic potential, as highlighted by recent H5N1 spillover from cattle to humans. Immune history shaped by repeated exposure complicates both prevention and therapy. We show how isolating and functionally characterizing human hemagglutinin-targeting antibodies reveals cross-reactive immunity, identifies conserved vulnerabilities, and informs strategies for antibody-based therapeutics and vaccine design.
Mabylon’s allergy pipeline leverages naturally occurring human antibodies to generate multispecific therapeutics targeting disease‑relevant allergen epitopes. Lead candidate MY006, a tri‑specific anti‑peanut antibody designed for low‑frequency dosing, blocks IgE binding and suppresses allergic effector‑cell activation, and is currently under investigation in Phase 1 studies. The broader pipeline applies the same discovery engine to additional food and environmental allergens, including birch allergy, with the potential to fundamentally transform allergy treatment.
The patent landscape for antibody therapeutics is rapidly evolving, with overlapping technologies and filings leading to complex freedom-to-operate issues as well as increasingly higher hurdles to obtaining patent protection. Developing robust patent estates that meet this challenging legal environment can be a key to success. Strategies for navigating this environment will be discussed.
DPBIO’s CytoSpark® system enables rapid, high-throughput screening of single plasma B cells for monoclonal antibody discovery. Supporting diverse species including rabbit, mouse, alpaca, and human, CytoSpark® delivers functional screening for challenging targets like membrane proteins and GPCRs. With single-cell precision and functional relevance, it also supports enzyme evolution and synthetic biology, accelerating timelines and expanding the frontier of biologics discovery.
Respiratory syncytial virus (RSV) causes a substantial respiratory disease burden in older adults. Three vaccines, each based on a prefusion-stabilized RSV F antigen, have now been licensed. Here, we delineate the humoral response elicited by Moderna’s RSV mRNA vaccine, characterizing antibody responses at both the polyclonal serum and single-B-cell levels.
Using an entirely original strategy, we have developed a novel platform that uses dual-binding antibodies to generate therapeutics with targeted, conditional activity only when bound to a selected marker. We are currently applying this Antibody Controlled Therapeutic technology to multiple targets, including PD1, LAG3, ATP, and LRRC15 and to multiple effectors including IL-2, IFN-a, IL-12 and TGFb inhibition.
Celiac disease is an autoimmune disorder in which ingestion of gluten damages the small intestine in genetically predisposed patients carrying HLA-DQ2.5 haplotype. DONQ52 is a novel neutralizing antibody that exhibits broad cross-reactivity against multiple gluten peptide/HLA-DQ2.5 complexes. In this presentation, we will present the identification of the lead antibody, its multidimensional optimization process, and the key characteristics of DONQ52.
The conditions for Plasmids, Transient HEK293 and Transient/Stable CHO from 96 well, 24 well, 6 well, 125mL-7L Optimum Growth flasks need to be maintained at small scale. Data will be presented on techniques and technology that allow for getting high amounts of protein in smaller volumes with fast techniques from 1mL-3L. This allows teams to get to IND molecules quickly. All of these techniques are proven technologies for protein production, structural biology, and can lead to successful clinical candidates.
Plasmodium falciparum malaria remains a global health problem. Here, I will discuss our efforts to identify and characterize human antibodies against Plasmodium falciparum targets including their clonal evolution and target epitopes to inform the development of improved malaria vaccines.
High-quality therapeutic antibodies aren’t the product of a single experiment, but of a series of cross-validated decisions spanning the entire drug discovery process. In this talk, Mosaic shares practical lessons from running quality-first, fit-for-purpose discovery – programs that blend in vivo and in vitro approaches to deliver candidates that work in the real world. Rather than showcasing a single case study, we’ll walk stage-by-stage through the discovery workflow, and at each stage, we’ll present a short case study: the stubborn problem we hit, what didn’t work, the tactic(s) that did, and a concrete rule of thumb you can reuse to avoid similar roadblocks in the future.
At NonaBio we are innovating away from simply screening for antibodies based on binding affinities and developing more novel early-stage function-based screening platforms. This presentation highlights examples of function-based screening of VH sequences generated from our fully human heavy chain only HCAb Harbour Mice® discovery platform.
I will discuss SureTACs technology that we developed for targeted degradation of transmembrane proteins, utilizing heterobifunctional antibodies that mediate induced proximity of a transmembrane E3 ubiquitin ligase and the target. Upon tethering E3 to target, the target protein undergoes ubiquitination, endocytosis and lysosomal degradation. I will discuss how we identify optimal E3-target combinations and share proof-of-principle and in vivo efficacy data for PD-L1-targeting SureTACs.
While there has been substantial innovation in bispecific engineering, approaches to bispecific discovery have thus far been cursory, often narrowly focused on pre-determined target pairs of known biology. Dualitas has built a bispecific discovery engine that operates at combinatorial scale, enabling functional screening of cell surfaceomes at vast target and epitope space. Large unbiased screens have illuminated novel co-target biology and yielded an emerging bispecific pipeline of I&I programs with differentiated activities unachievable by conventional inhibitors. Concomitantly, observations of repeatable activities are elucidating a novel collection of immune engagers, plug-and-playable mechanisms and antibody arms that can bring superior pharmacology to established therapeutic pathways.
This talk will share updates from the AIntibody competition, a benchmarking initiative engaging the biotech, pharma, academia, and AI communities to use AI and other informatic methods to design or identify developable antibodies with high affinities, from curated NGS datasets. Results will compare the properties of these antibodies with those derived using experimental methods, providing insights into the value of AI in antibody discovery. AIntibody announcement manuscript: Erasmus, M. F. et al. Nat Biotechnol 42, 1637-1642 (2024).
We present Germinal, a model for performing epitope-targeted design of de novo nanobodies and scFvs against a wide range of epitopes, including the ability to design specificity or breadth across multiple targets.
Our fully integrated AbZelectPRO™ platform enables the rapid delivery of stable, high-producing cell lines to support the production of antibodies and more difficult-to-express proteins. The platform combines our AbZelectPRO™ CHO-K1 and AbZelectPRO™-KO GS knockout cell lines together with ProteoNic’s 2G UNic® vector technology and, supported by our comprehensive analytics capabilities, provides a state-of-the-art offering to support our clients as they transition from R&D into preclinical and clinical development.
TAVO412 is an avidity driven trispecific antibody that engages multiple mechanisms of action to control different resistance mechanisms in solid tumors. We describe confirmation of target engagement in Phase 1A trials for patients struggling with mutant lung, esophageal, and colorectal cancers. In addition, we highlight the pharmacokinetic profiles, tolerability, and clinical responses.
As a critical step towards uncovering the extent and functional consequences of germline-encoded variation in adaptive immune receptor genes, we developed an ultra-high throughput multiplexed sequencing technique, ImmuneDiscover. This approach allows individualized immunoglobulin (IG) genotyping from nanogram quantities of genomic DNA and multiplexing >1,000 individuals in a single analysis. We benchmarked the approach on 90 donors from different population groups and subsequently genotyped 2,486 cases from the Thousand Genomes Project (1KGP) collection, creating an atlas of human IG gene variation, KIARVA. All alleles were validated against existing SNP databases from >million individuals using IgSNPer. We found extensive population differences in IG genes known to be important in pathogen responses, including a homozygous multigene IGHD segment deletion present in up to 30% of East Asian individuals. In addition, we show evidence of disease responsive haplotypic differences in human population groups, suggesting localized selection pressures, and illuminate ongoing genomic processes that function to maintain IGH locus heterogeneity.
Despite advances in cancer therapeutics, new protein targets and targeting approaches for drug development are needed. We developed a high-resolution proximity proteomics technology using photocatalyst-generated reactive probes to label discrete cell surface protein microenvironments. Combined with quantitative mass spectrometry, we characterize plasma membrane protein interactomes and integrate proximity proteomics data with clinical protein expression profiles through computational graphs and graph convolutional neural networks (GCNNs). This membrane interactomics (MInt) database enables the unbiased identification of inherently proximal surface antigens in tumor microenvironments and facilitates precise dual-targeting of malignant cells. Utilizing our platform to identify proteins inherently proximal to EGFR on tumor cells, we identified CDCP1 as a TAPA (tumor associated proximity antigen) of interest. Our findings led to the development of IDP-001, a novel bispecific ADC targeting EGFR and CDCP1, anticipated to enter clinical trials in 2026. Identification and characterization of IDP-001 will be presented.
Ficerafusp alfa, is a first-in-class EGFR-TGF-b bifunctional antibody. TGF-β signaling within the tumor microenvironment (TME) creates fibrotic, immunosuppressive barriers that impede tumor penetration of immune cells. Mechanistic insights from paired biopsies and preclinical studies reveal the importance of tumor targeted inhibition of TGF- b in breaking down barriers to tumor penetration. Ultimately, ficerafusp alfa’s tumor penetration has the potential to drive deep and durable responses that lead to long-term clinical benefits.
Inhibitory receptor agonism is important for maintaining normal immune homeostasis in healthy individuals. Agonizing inhibitory receptors with antibodies offers a differentiated approach for treating the uncontrolled inflammatory responses observed in autoimmune disease. Understanding and mimicking the biology of natural receptor and ligand interactions is critical for designing therapeutics with optimal inhibitory receptor agonism, and can differ from traditional therapeutic antibody discovery approaches.
Therapeutic protein engineering has been transformed by the incorporation of big data and AI/ML techniques. An emerging challenge for this field is how to efficiently leverage the right data and the best models to drive meaningful results and resolve long-standing bottlenecks. Amgen has incorporated a generative biology approach to tackle complex engineering problems, aiming to deliver better, more effective molecules across every therapeutic program.
Autoantigen-specific IgA autoantibodies correlate with disease severity in autoimmune and fibrotic diseases. The presence IgA/autoantigen immune complexes result in continuous CD89-mediated activation of myeloid cells, leading to severe tissue damage. Activation of myeloid cells is a highly underappreciated and untargeted in autoimmune diseases. We developed an antagonist humanized anti-CD89 antibody (JJP-1212), that by interfering with the IgA/CD89 axis, resolves IgA/autoantigen-induced inflammation and subsequent tissue damage in autoimmune and fibrotic diseases.
Serological antibodies represent an immunologically distinct compartment from B-cell repertoires that is often overlooked by genetic methods. A novel proteomics platform enables standalone protein-level discovery from complex human serum, sequencing unique antibodies absent in B-cell data. In a COVID-19 benchmark with zero prior B-cell neutralizers, we identified 18 distinct clones, yielding 8 neutralizers (3 highly potent, <0.2 µg/mL IC50), facilitating a pathway to real-world therapeutic discovery across diseases.
Immune organoids model key features of human adaptive immunity, including antigen-specific antibody responses. Immune organoids are derived from lymphoid tissues and recapitulate the diversity of human immune responses. This talk will discuss the utility of the organoid model for investigating host and antigen format factors that influence the magnitude and quality of the antibody response.
Antibodies bridge innate and adaptive immunity through their constant (Fc) domains, yet most of Fc functional space remains unexplored due to experimental constraints. To address this, we developed an AI-guided platform for Fc-engineering. By integrating the screening of synthetic Fc-libraries with next-generation sequencing and deep learning, we built FcGPT – a protein language model that designs antibody Fc-variants with bespoke Fc-receptor binding profiles, unlocking new possibilities for antibody design and immunotherapy.
Standard bioassays often fall short when evaluating immune-modulating biologics due to their complex and diverse MOAs. This presentation explores the use of context-specific in vitro models for T cell engagers in oncology and biologics targeting autoimmune pathways. Through case studies, we highlight how tailored assays, such as T cell activation, cytokine release, and target-specific inhibition, enable robust assessment of drug potency, specificity, and mechanism of action.
Monoclonal antibodies have recently been shown to prevent malaria in clinical trials in endemic regions, but challenges remain regarding antibody cost, potency, and specificity. Here, we describe the discovery of next-generation antibodies that target the malaria parasite, Plasmodium falciparum, as part of efforts to develop new anti-malarial vaccines and prophylactics.
Antibody engineering is evolving, and Gibson SOLA delivers the synthesis technology to match. This modular enzymatic platform enables rapid, on-demand production of antibody variants using conserved sequences, allowing more candidates per screen and fewer iteration cycles. From scFvs to Fc-fusions, SOLA empowers deeper campaigns, faster decisions, and unique discovery strategies—all at comparable or reduced cost, without outsourcing delays.
This presentation will explore how Adimab has revolutionized antibody discovery, growing from an innovative startup into a leading platform technology company. We will examine key technological breakthroughs in our platform, focusing on synthetic antibody library evolution, advances in multispecific generation, and novel approaches to developability optimization. Join us to learn how Adimab's engineering-driven approach is shaping the future of therapeutics.
Standard bioassays often fail to capture the complexity of immune modulating biologics. This presentation examines the use of context specific in vitro models for T cell engagers in oncology and autoimmune therapies. Through representative case studies, we demonstrate how tailored assays including T cell activation, cytokine release, and target specific inhibition provide robust insights into drug potency, specificity, and mechanism of action, supporting more informed, data driven decision making in biologic development.
Immunogenicity is a major challenge in biologic drug development, compromising efficacy and safety. Our ADAx platform selectively suppresses B cell activation against therapeutics while preserving normal immune function and drug activity. It enables strong ADA suppression and improved pharmacokinetics in vivo, offering a versatile solution across protein and antibody formats.
OptiMAL™ represents the World's first platform using a fully synthetic human antibody library that can be screened using Mammalian Display in the native IgG format. The results shown will demonstrate that this platform can be used for the discovery of antibodies with high specificity, developability and yield, in a competitive timeframe. Followed by the knowledge that a rationally designed synthetic library can out-perform more traditional library design methods.
PIP is a versatile targeting peptide that binds selectively to multiple tumor-associated targets, a unique feature enabling payload delivery to virtually any solid tumor. This presentation focuses on the development of PIP-Drug Conjugates, their efficacy and safety, and how PIP’s multi-specific targeting overcomes resistance seen with conventional single-antigen targeting ADCs.
Although the first antibody-drug conjugate (ADC) was approved more than 25 years ago, progress was slow over the next 2 decades. There has been a surge of ADC approvals since 2019, with both traditional payloads as well as newer payload and linker technologies. Despite improved clinical activity vs. standards of care for different indications, ADCs have inherent toxicities that were somewhat unanticipated and have highlighted the limitations to current technologies. Recent efforts involve improved conjugation technologies, refining linker design and discovery of more targeted payloads, which will be the focus of this presentation.
Developability assessment remains a bottleneck in early antibody discovery. PAIA´s plate-based developability assay platform provides a fast and easy-to-automate way to characterize hundreds of thousands of molecules per day.
In this presentation we show developability data for different sample sets of mAbs, VHH-Fc Fusions and bispecifics and compare the results with orthogonal methods and published data.
Neonatal Fc receptor is a popular target for treatment of autoimmune disorders due to its role in maintaining IgG levels. Fc-ABDEG and albumin-binding VHH were combined to develop next-generation FcRn blockers with improved IgG clearence. Step-wise engineering was applied to optimize position and number of VHHs, their affinity to albumin, and the linker connecting it to Fc-ABDEG. Novel FcRn-based cellular assays and human FcRn transgenic mice will also be addressed.
EpiTACs are bispecific antibodies in which one arm binds a pathogenic target, and the other arm leverage tissue-enriched degrading receptors to selectively degrade a wide range of extracellular targets including membrane, soluble, and multi-span proteins. EpiTACs to multiple oncology and autoimmune targets demonstrate that target degradation drives compelling in vivo activity. EpiTACs can also deliver ADC payloads creating novel therapeutics that combines target degradation with ADC cytotoxicity. The dual mechanism of EpiTAC ADCs leads to anti-tumor activity that outpaces current standard of care molecules.
Melanocortin receptor 4 (MC4R), a class A GPCR, suppresses appetite upon activation, but current peptide agonists lack receptor selectivity. Using Confo technology, we stabilized active-state MC4R with a conformation-selective ConfoBody to discover potent, MC4R-specific VHH agonists. We identified the most potent VHH and resolved its structure bound to the orthosteric pocket. This highly specific VHH offers a promising candidate for selective anti-obesity therapy via MC4R activation.
Antibodies have broad utility in imaging, targeted gene delivery, and disease therapy, and many of these applications require conjugation to secondary molecules. Unfortunately, conventional conjugation approaches are limited by destabilization of structure, heterogeneity, and technically demanding multi-step reactions. To overcome these challenges, we developed a straightforward and highly general platform for site-specific antibody conjugation that blends metabolic glycoengineering with protein design, presenting a highly efficient strategy to produce antibody conjugates.
We ran an open protein design competition in where 100+ participants from industry and academia submitted binders against Nipah virus. Testing 1000 sequences experimentally in our lab revealed which computational methods translate to experimental success, with hit rates varying 10-fold between approaches. We'll share lessons on benchmarking design pipelines, the value of negative data, and how open competitions can accelerate the field when paired with standardized experimental validation.
Systemic toxicities from target expression on healthy tissues limit cancer therapy. The PrimeBody platform employs protease-cleavable linkers and affinity-tuned masking to generate tumor-activated biologics with exceptional systemic stability and efficient tumor activation. VOR-101, a masked, Fc-enhanced CD47 blocker, remains inert in circulation but rapidly activates in tumors, achieving >700-fold selectivity. It delivers ~100-fold higher exposure than conventional agents without toxicity, driving durable tumor regressions and a markedly improved therapeutic index.
We are developing dual-payload ADCs that enable delivery of two different payloads simultaneously to the tumor with the goal of enhancing therapeutic efficacy and overcoming resistance mechanisms. Leveraging our cell-free platform, we precisely control payload placement and ratio to optimize efficacy. Preclinical data demonstrate superior efficacy in vitro and in vivo over single-payload ADCs, with favorable pharmacokinetics, stability, and safety.
Are you within 10 years of completing your Master’s or Ph.D. and under the age of 35? If so, unlock a range of exclusive benefits by selecting the "Early Career Scientist" pass when you register. This session will spotlight short, novel research presentations from early career scientists in the antibody engineering and therapeutics community. You’ll also hear an inspiring career journey from a distinguished mid-career scientist, plus enjoy the opportunity to connect and network with peers. You’ll also receive free admission to the afternoon pre-conferences workshops on December and the opportunity to present a free poster during the main conference. Please Note: Access to the early career scientists session is only available to those who register for the main conference by selecting the “Early Career Scientist” pass. All passes subject to approval by conference organizers.
To be considered for a short oral presentation in this session, or for general information about this session, please contact Michael Keenan at Michael.keenan@informa.com
If you are interested in sponsoring this session, please contact Blake Shuka at Blake.Shuka@informa.com
Monkeypox is a dangerous virus, and some of its key targets for immunity are still unknown. We discovered antibodies that recognize a viral protein called A28 and showed they can strongly neutralize Monkeypox and related viruses. Vaccinating mice with A28 triggered powerful immune responses and fully protected them from infection. These results suggest A28 could improve future Monkeypox vaccines.
Trispecific antibodies (tsAbs) can bind three distinct targets, enabling next-generation approaches in areas like cancer therapy. By engaging multiple tumor-associated antigens, tsAbs can increase tumor specificity, limit antigen escape, and enhance immunostimulatory effects compared to bispecific or monospecific antibodies. We present data on the T-body, a Fab-based, IgG-like trispecific antibody platform with high expression, efficient assembly and good developability characteristics, which accelerates and de-risks development of innovative immunotherapies.
Maxion have shown that small cysteine-rich peptides (“knottins”) with ion-channel modulating activity can be inserted into antibody CDR loops while retaining their function. The resulting “KnotBody molecules modulate ion channel activity while benefitting from the optimal drug-like properties of antibodies. This presentation will illustrate the generation and optimisation of KnotBody inhibitors of Kv1.3, an important ion channel affecting function of T effector memory cells.
We present discovery of a novel IgE cleaving protease engineered using our proprietary machine learning enabled IMPACT platform to obtain desired target specificity, potent cleavage, and efficacy in preclinical models with favorable manufacturability properties, low immunogenicity, pharmacokinetics, and pharmacodynamics. IgE cleavers offer a new potential targeted therapy for allergic and atopic diseases.
Immunostimulatory antibodies targeting immune receptors represent an exciting new modality for immunotherapy. Using TNFR superfamily receptors as a paradigm the role of isotype, epitope and affinity have previously been explored. Recently, the modification of the antibody hinge has been investigated as a hitherto unexplored means to tune and mediate powerful receptor agonism. The various approaches to exploit the hinge will be presented.
Natriuretic peptide receptor 1 (NPR1) is a membrane-bound guanylate cyclase and activated by atrial (ANP) and brain (BNP) natriuretic peptide and NPR1 agonism alters blood pressure via regulation of intravascular volume, vasorelaxation, natriuresis and diuresis. We have isolated fully human antibodies from VelocImmune® mice that either agonize or antagonize NPR1 activity and are developing as potential treatment of cardiac diseases such as heart failure and hypovolemic/hypotensive disorders.
The rapid expansion of complex biologics—bispecifics, multispecifics, Fc-fusions, has exacerbated the disconnect between early discovery expression systems and manufacturability. The CHO Edge Rapid Pools addresses this developability gap by providing discovery teams with CMC-grade pools and molecule insights early enough to influence lead optimization, architecture selection, and manufacturability assessments.
Immunogenicity of biopharmaceuticals can affect their safety and efficacy. Mitigation of this risk should start early in development, at the drug design phase. This presentation discusses incorporating advanced in silico and in vitro de-immunisation tools into protein engineering processes to select a lead candidate that balances immunogenicity risk and desired biophysical properties.
Developed by the team behind Sc2.0’s synthetic yeast genome, neoSwitch is a yeast strain that flips between surface display and secretion with a simple media change—eliminating antibody reformatting and host switching. Neo offers high-diversity naïve VHH and scFv libraries (>10^9) for rapid, first-pass discovery, and we routinely design, build, and transform custom libraries for partners. Paired with the Opentrons Flex, neoSwitch enables turnkey, automatable workflows—including protein purification—to accelerate hit-to-lead.
Speaker #1: Next-Gen BsAb Manufacturing: How TurboCHO Ensures High Productivity & Purity in Manufacturing
This presentation will introduce GenScript’s TurboCHO™ technology, an integrated, DOE-driven workflow that optimizes cell lines, vectors, and media to fine-tune chain ratios and boost yields. A streamlined, customizable purification strategy using advanced chromatography further improves product purity.
Speaker #2: Structure First Approaches to Vaccine and Antibody Design
Rational vaccine design is predicated on a deep molecular understanding of epitope-paratope interactions between antibodies and cognate antigens. Generating these data can be quite laborious, time consuming, and at great cost. To accelerate this process we developed a hybrid structural and bioinformatic approach to directly assign the heavy and light chains, identify complementarity-determining regions and discover antibody sequences from cryoEM density maps of serum-derived polyclonal antibodies bound to an antigen. When combined with next generation sequencing of immune repertoires we can specifically identify clonal family members, synthesize the monoclonal antibodies and validate their binding interactions. This structure-based approach for identification of monoclonal antibodies from polyclonal sera opens new avenues for analysis of immune responses, iterative vaccine design, and monoclonal antibody discovery. Continuous technological developments such as automation of data processing and structure interpretation as well as assay miniaturization further increase the throughput and accessibility of our approach.
neoSwitchTM is a yeast strain engineered to toggle between display for antibody library screening and secretion for 5-100 mg/mL VHH/ScFv production. By combining 10⁹-member synthetic or semi-synthetic libraries with turnkey Opentrons FlexTM automation and the Goldilocks LibrariesTM affinity-maturation workflow, it is possible to isolate monomeric VHHs with picomolar binding affinities in weeks.
Since the first ADC approval 25 years ago, the MMAE vedotin platform has been the most widely utilized. Over 50 targets have been paired as vedotin ADCs and tested across heme and solid tumors, offering a rare opportunity to leverage insights about ADC target selection. Recent vedotin ADC NSCLC clinical data suggest that targets with unique biology, such as PD-L1 and Integrin Beta-6, are enabling success in a tumor type where other vedotin ADCs have failed.
Fibrosis can affect multiple organs in the human body and significantly threaten human health. Early diagnosis and intervention are crucial for preventing disease progression. However, very few treatments are available to patients. Next-generation medications with novel mechanisms of action are demanded to broaden the responding patient population and improve the therapeutic index. WNT1-inducible signaling pathway protein 1 (WISP1, also known as CCN4), a matricellular protein, was identified as a novel drug target for fibrosis through analysis of the transcriptomic data of human cirrhotic livers. I will present the preclinical studies of targeting WISP1 for treating tissue fibrosis.
Recent breakthroughs in cancer immunotherapy have highlighted the potential of leveraging natural killer (NK) cells for cancer treatment, with NK cell engagers (NKCEs) emerging as a promising strategy. We will present the discovery of a panel of Nkp80 engagers, and the subsequent engineering of a trifunctional NKCE that targets HER2 on cancer cells while engaging Nkp80 and CD16a on NK cells (HER2-NKCE). HER2-NKCE demonstrated potent antitumor activity against HER2-positive cancer cells, with picomolar-range potency. It effectively targeted a range of HER2 expression levels, inducing NK cell activation and cytokine secretion exclusively in the presence of HER2-expressing cancer cells, significantly outperforming the HER2 antibody Trastuzumab. Moreover, the dual-engagement of Nkp80 and CD16a led to a robust immune response. Importantly, HER2-NKCE exhibited target-dependent cytotoxicity against cancer cells, while sparing HER2-positve normal cells, thereby minimising on-target off-tumor effect.
Abalone Bio’s Functional Antibody Selection Technology (FAST) platform is driven by a powerful combination of large-scale activity measurement and machine learning (ML) to identify and design activating antibody drugs against challenging targets. In combination with Abalone’s developability ML models, this enables the design of novel, therapeutically active and highly developable antibody sequences. Agonists for multiple GPCRs, including CB2, were identified using FAST, which have macrophage-modulating, anti-inflammatory activities in vitro and ex vivo in human precision-cut liver slices, and therapeutic activity in animal models of neuropathic pain and advanced liver cirrhosis. These antibodies activate their target through non-orthosteric mechanisms involving novel binding-function relationships that would have been difficult to discover without using large-scale activity-first selection methods like Abalone’s FAST platform.
Chugai has established various proprietary antibody engineering technologies. To effectively maximize the value of these established technologies, we have been applying them sequentially to multiple targets across disease areas. Several examples will be shared in this presentation.
FcRn functions as a recycling receptor to maintain levels of IgG and albumin. Efgartigimod (Vyvgart™) is a FcRn antagonist approved for treatment of IgG driven diseases. In this talk the engineering of a next-generation FcRn blocker with prolonged duration of effect will be discussed. Moreover, we describe the development of an anti-IgA monoclonal antibody that can actively remove IgA from the circulation. Given the abundancy of IgA in human serum (1-3 mg/mL), both Fab and Fc engineering were needed.
Academic advances in machine learning technology enabling protein design. Applications towards the development for biologics both in terms of de novo design and optimization.
Add-on this optional pre-conference workshop to your main conference registration package and gain a comprehensive overview of antibody engineering in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Workshop registration begins at 7:30 am
- Morning Break: ~10:30-10:50
WORKSHOP OVERVIEW
Today’s wealth of knowledge of antibody structures will be reviewed along with the genetics of diversity generation, to give insights into the best strategies for improving function. There is particular emphasis on the choice of a functional assay to effectively monitor the changes in a desired property, and the use of functional enrichment steps where a library approach is employed. Not only is amino acid sequence amenable to engineering, but glycan structures and other modifications may also be engineered. The course will focus on the engineering and enhancement of antibodies and antibody-like scaffolds. Examples will include work on antibody fragment affinity improvement by 100-fold to low pM affinity. Also, the engineering of bispecific antibodies by diverse approaches and the adaptation to generate Chimeric Antibody Receptor (CAR) constructs will be discussed. Expression platforms for producing antibodies for testing and for manufacture will also be covered. A background in biochemistry and molecular biology is useful, as the course is designed to progress rapidly from simple to advanced concepts.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC
WORKSHOP AGENDA
- Functions amenable to engineering: affinity, specificity, stability, solubility, immunogenicity
- The measure of success: functional assays
- Engineering by design
- Engineering by random mutation
- Designed libraries
- Display technologies
- Improving manufacturing by protein engineering methods
- Glycosylation engineering – function and homogeneity
- Other protein modifications
- Immunogenicity engineering
- Bispecific antibodies
- CAR-T strategies
- Expression of antibodies and fragments for discovery and testing
- Manufacturing platforms for antibodies and fragments
NOTE: The afternoon workshop “Introduction to Bispecific & Multispecific Antibodies” is an excellent complement to the morning introduction course.
Add-on this optional pre-conference workshop to your main conference registration package and gain a comprehensive overview of bispecific and multispecific antibodies t in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Workshop registration begins at 12:30 pm
- Afternoon Break: ~ 3:30-3:50
WORKSHOP OVERVIEW
This workshop covers the key aspects of bispecific antibody design, how best to achieve desired therapeutic function, and then explores the challenges posed for manufacturing such complex molecules. The various parameters for a bispecific antibody are each examined – valency and affinity for engaging each individual target, optimum physical distances for desired binding and outcome, requirement for Fc function(s) or not, etc. A discussion of antibody formats that may be especially applicable to rapid screening of the optimum valency, affinity, spacing, etc., of each specific binding component is included. It is aimed to provide even beginners with explanations of the nomenclature and science.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC
WORKSHOP TOPICS TO BE DISCUSSED
- Review of Antibody Structure, Fc Function(s)
- Fundamental Bispecific Antibody Design Considerations
- Symmetric vs. Asymmetric Formats – Valency of Target Binding
- Is Fc Function Required for a Particular Bi-specific Antibody Therapeutic?
- Aligning Format with Desired Bispecific Antibody Function
- Examples of a Variety of Bispecific Antibody Applications, from T-Cell Engagers to crossing the blood-brain barrier
- Manufacturing Multi-subunit Bispecific Antibody Molecules
WHAT WILL YOU LEARN?
- Gain an overview of the key aspects for design parameters for Bi-specific Antibodies.
- Scientific terms and acronyms relating to Bi-specific Antibody will be defined and explained.
This talk will explore cutting-edge strategies for antibody display selections, highlighting their impact on the discovery of novel potential therapeutics, for established and novel format of antibodies: from Fab to VHH. The presentation will cover advancements in display technology approaches to optimize the selection of antibodies with precise features, presenting case studies demonstrating successful applications (e.g., anti-ID, pH sensitivity, specific epitope recognition). Future directions and unmet needs in the field to accelerate precision medicine and the development of new therapies will also be covered.
This presentation will explore how Adimab has revolutionized antibody discovery, growing from an innovative startup into a leading platform technology company. We will examine key technological breakthroughs in our platform, focusing on synthetic antibody library evolution, advances in multispecific generation, and novel approaches to developability optimization. Join us to learn how Adimab's engineering-driven approach is shaping the future of therapeutics.
Quick feedback on what people designed and produced and how these act in the system is essential for the development of novel molecules and formats, but this is challenging. Rigaku developed a 'Molecular projector, MoleQlyze' that can image large molecules and complexes in a solution without prerequisite information and crystallization/freezing/fixation/labeling processes. This enables overnight direct epitope mapping, molecular defects and aging monitoring during culture and purification processes, nucleotide-protein quantitation of vector complexes, and observation of defects in particles with the molecular 3D image under given conditions.
This presentation will explore how Twist Biopharma Solutions leverages data-driven antibody discovery with hyperimmune and humanized mice to maximize hit rates, accelerate timelines, and improve success against even the most challenging oncology targets
The development of antibody-based medicines can be accelerated by enhancing both our understanding and predictive power of antibody-antigen binding. For both purposes, affinity datasets from mutational scans are an important resource, but the factors driving affinity remain insufficiently understood. To address this, we present a multi-modal dataset of antigen and VHH interface variants, that captures changes in binding affinity, protein stability, and expression levels. We observe that the affinity change introduced by most mutations is largely explained by changes in stability rather than interaction-specific effects. Using this data, we confirm that structure-conditioned inverse folding models perform well in predicting the relative stability of protein variants. Finally, we quantify the ability of inverse folding models to capture interface changes of paratope variants and detect little predictive power for the interface changes in epitope variants. Our findings highlight the importance of high-quality, information rich datasets in advancing protein engineering efforts.
We present JAM, a protein design system capable of designing antibodies de novo with therapeutic-grade affinities, function, and early-stage developability for soluble and multipass membrane protein targets. For GPCRs, we show de novo designed antibodies have single-digit nM to picomolar binding affinities, and while most are functional antagonists, remarkably, a subset are agonists -- marking an important milestone in the field.
We will present our practical, platform-driven strategies for generating POC-stage antibodies targeting emerging targets in chronic diseases and oncology. These innovative antibody candidates have the potential to de-risk drug development and address unmet patient needs. Leveraging AI-powered platforms, we enable the discovery and engineering of next-generation antibodies with distinct mechanisms of action, novel modalities, and optimized drug-like properties.
Etcembly is the first company to leverage generative AI to discover and engineer T cell receptor (TCR) biologics for cancer immunotherapy. Using our proprietary machine learning platform, EMLyTM, we predicted the TCR-pHLA interface from sequence alone, leading to the discovery of our lead molecule, ETC-101, a TCR that recognises the PRAME cancer antigen peptide in complex with HLA-A*02. We show that ETC-101, which was designed in silico, was able to signal effectively to elicit T cell activation when expressed as a full-length TCR and was specific to its target peptide. Further predictions from EMLyTM enabled rapid affinity enhancement of the parent molecule by >5 million-fold, resulting in an ETC-101 TCR variant with picomolar affinity. When this high affinity variant was expressed as a bispecific T cell engager, ETCer (Etcembly’s T Cell Engaging Receptor), ETC-101 exhibited strong efficacy and was able to induce robust T cell-mediated cytotoxicity against a panel of target cancer cells. Early preclinical assessment and cross-reactivity screening of the ETC-101 ETCer also demonstrated a promising safety profile, and the suitability of this candidate TCR for advancement into translational development. Our data validates the strong predictive capability of our AI platform EMLyTM in TCR discovery and engineering. Functional characterisation of our lead TCR molecule ETC-101 demonstrates its potential as a novel drug candidate for the treatment of PRAME-positive cancer indications.
Epsilogen was founded to develop therapeutic antibodies of the IgE class. Through acquisition of TigaTx in March 2025, Epsilogen is now also developing therapeutic IgA antibodies. Epsilogen is therefore the only pan-isotype therapeutic antibody discovery/development company and has in-house expertise in antibody discovery, protein engineering and expression/production, in vitro/cellular immunology, in vivo pharmacology, CMC and clinical development.
Epsilogen's lead program is called MOv18 IgE which targets Folate Receptor Alpha. The antibody has completed one phase 1 trial and is currently being further tested in a phase Ib trial. The company also has IgE and IgA antibodies in development and it has established a number of proprietary platforms deriving from IgE and IgA scaffolds (e.g. bispeciifcs and hybrid antibodies that combine IgE or IgA with IgG functionality).
At OmniAb, we build, shape and mine custom, naturally optimized human immune repertoires in divergent species to discover next generation biotherapeutics. Using our high throughput single B cell screening xPloration platform combined with an AI-guided NGS workflow, we identify drug-like leads, bypassing extensive ex-vivo engineering. We show examples of campaigns across various animal platforms that yielded broad and complementary epitope coverage of disparate specific targets, with a range of affinities, and favorable developability characteristics, increasing options for our partners.
Effective and specific non-opioid therapeutics for chronic pain with high efficacy and no side effects are urgently needed. We have reported that mouse scFv95, a small molecule specifically recognizing and blocking P2X4R, is a promising candidate for further characterization and humanization. Nine humanized scFv (hscFv) variants against an extracellullar fragment of human P2X4 were generated via CDR grafting using E. coli production and His-Tag protein purification. Affinity measurement by ELISA and SDS indicates binding affinity in the nanomolar range. More than 2/3 of humanized small molecules showed higher affinity than the parental protein. Octet measurements further revealed the lead HC3-LC3 had binding kinetics of KD = 2.5 × 10–9 M. No endotoxin or in vivo toxicity is noted. Functional validation in vivo in a trigeminal nerve injury model finds reversal of pain related behaviors within two weeks after a single dose (4 mg/kg, intranasal). The details of the development and characterization of a lead P2X4 hscFv HC3-LC3 small molecule provided here constitute an original method whereby durable reversal of nerve injury hypersensitivity can be accomplished. This study opens new avenues for research to develop humanized non-opioid therapeutic interventions for chronic pain.
ADCs and TCEs are important therapeutic modalities. This presentation covers ADC & TCE antibody discovery from BsAb molecular design and antibody discovery platform selection to fit-for-purpose screening and characterization. We share our extensive experience in TCEs, highlighting key considerations for TCE optimization, such as epitope selection, affinity tuning, and PK. For ADCs, we showcase innovative early candidate screening platforms, including high-throughput internalization assays and bio-conjugation, ADC killing and stability assays.
Biocytogen provides a unique, fully characterized library of fully human antibody binders targeting over 1,000 druggable proteins. Several bispecific ADC assets, utilizing a common light chain and our proprietary Top1 payload, are now in clinical trials. RenNano mice generate fully-human nanobodies for next-generation ADC.
Despite advances in cancer therapeutics, new protein targets and targeting approaches for drug development are needed. We developed a high-resolution proximity proteomics technology using photocatalyst-generated reactive probes to label discrete cell surface protein microenvironments. Combined with quantitative mass spectrometry, we characterize plasma membrane protein interactomes and integrate proximity proteomics data with clinical protein expression profiles through computational graphs and graph convolutional neural networks (GCNNs). This membrane interactomics (MInt) database enables the unbiased identification of inherently proximal surface antigens in tumor microenvironments and facilitates precise dual-targeting of malignant cells. Utilizing our platform to identify proteins inherently proximal to EGFR on tumor cells, we identified CDCP1 as a TAPA (tumor associated proximity antigen) of interest. Our findings led to the development of IDP-001, a novel bispecific ADC targeting EGFR and CDCP1, anticipated to enter clinical trials in 2026. Identification and characterization of IDP-001 will be presented.
A bispecific ADC targeting EGFR x HER3 was discovered, named PM1300, which has an asymmetric 1+1 IgG-like structure and optimized affinity. This allows for preferential binding to EGFR/HER3 double-positive cancer cells, rather than EGFR single-positive cells. This may significantly contribute to minimizing safety risk that is common for EGFR-targeting agents. Furthermore, this also significantly increased internalization efficiency and in vivo efficacy against EGFR/HER3 double positive tumor compared to 2+2 format ADC indicating a superior therapeutical window.
This presentation will highlight the development of AT65474, a CLDN6-targeting ADC leveraging AxcynDOT™, a novel payload platform with enhanced potency and safety. AT65474 employs site-specific conjugation via AxcynCYS™ technology to achieve highly uniform DAR4 profiles (>97%), improving consistency and efficacy. We will present preclinical data demonstrating potent anti-tumor activity in CLDN6-positive CDX and PDX models, broad in vitro cytotoxicity across drug-resistant lines, and favorable safety in GLP toxicology studies. Key lessons in payload optimization, linker stability, and overcoming regulatory hurdles for IND readiness will also be shared, underscoring our approach to next-generation ADC development.
MabPair is a novel technology for making the next generation antibody combination products that are capable of targeting multiple molecules and pathways. The core technology is based on an antibody engineering platform that enables the production of two full length IgG molecules from a single production cell line. The technology platform can be used to develop therapeutic antibody products that contain a mixture of two different antibodies in a predefine ratio through the conventional antibody manufacture process. MabPair products can offer compelling advantages over bispecific antibodies or conventional antibody combination including abilities to achieve different level of target coverage for the two antibodies, full flexibility in choice of different Fc backbones for antibody effector function and pharmacokinetics profiles, streamlined regulatory and clinical development paths, and single-entity pricing power. Recently our first MabPair product was approved in China by NMPA. The talk will describe the process of generating MabPair products with case studies that highlight the unique feature of the platform and its potential applications in different therapeutic settings.
TfR1 is involved in iron uptake and cell growth. Many cancers express TfR1, but TfR1-targeted agents have safety risks. KK2260 is a REGULGENT™ technology-based bispecific antibody targeting TfR1 and EGFR. KK2260 resulted in EGFR-binding dependent TfR1 downregulation and demonstrated potent anticancer effect against EGFR-expressing tumors. Clinical study is ongoing (NCT06248411).
In this talk, we present the CHO Edge System, which integrates a glutamine synthetase (GS)-CRISPR knockout CHO host, a hyperactive transposase, libraries of characterized genetic elements to control cellular functions, and computational tools for rational vector design and multi-omics analysis. We present case studies highlighting the impact of these tools to optimize expression for both standard monoclonal and bispecific antibodies.
We present Germinal, a model for performing epitope-targeted design of de novo nanobodies and scFvs against a wide range of epitopes, including the ability to design specificity or breadth across multiple targets.
Generative AI is redefining what’s possible in biologics discovery — enabling scientists to explore protein sequence space more efficiently, design higher-performing molecules, and accelerate the path from concept to candidate. At Cradle, we are developing intuitive software tools that allow protein engineers to directly leverage generative AI models within their existing workflows. This presentation will showcase how Cradle’s technology enables scalable and reproducible protein design, combining advanced AI architectures with user-centered design to reduce cycle times and ultimately create better biologics.
We ran an open protein design competition in where 100+ participants from industry and academia submitted binders against Nipah virus. Testing 1000 sequences experimentally in our lab revealed which computational methods translate to experimental success, with hit rates varying 10-fold between approaches. We'll share lessons on benchmarking design pipelines, the value of negative data, and how open competitions can accelerate the field when paired with standardized experimental validation.
Ability Biotherapeutics presents AbiLeap™ – a proprietary AI-enabled platform to systematically generate conditionally active antibodies. Trained on one of the largest therapeutic antibody databases, AbiLeap achieves unprecedented mutational reach (up to 25 amino acid changes) while retaining epitope specificity and therapeutic-ready humanness. Using AbiLeap we have generated leads against 4 targets and are pursuing IND-enabling studies by 2027.
We present mBER, an open-source system for designing antibody binders with state-of-the-art success rates. We designed libraries of over 1 million VHH binders against 436 targets, achieving 45% target success and up to 38% epitope-specific binding. Libraries were screened in vivo using pooled multiplex technologies to quantify biodistribution and understand receptor biology. This represents the largest de novo antibody design campaign and screen reported to date.
Recent advances in generative models for protein design have greatly accelerated the computational discovery of de novo proteins that bind biological targets of interest. These advances have vastly outpaced experimental validation, creating a bottleneck for the full realization of protein design for biological applications. I will present a massively parallel synthetic biology approach to validate thousands of designs against thousands of targets, bringing us closer to using protein design to interface with biology at the scale of proteomes.
We will present the development of a novel IgG isotype engineered to exhibit IgA-like cytotoxic activity, along with supporting pre-clinical data and its potential applications.
Ficerafusp alfa, is a first-in-class EGFR-TGF-b bifunctional antibody. TGF-β signaling within the tumor microenvironment (TME) creates fibrotic, immunosuppressive barriers that impede tumor penetration of immune cells. Mechanistic insights from paired biopsies and preclinical studies reveal the importance of tumor targeted inhibition of TGF- b in breaking down barriers to tumor penetration. Ultimately, ficerafusp alfa’s tumor penetration has the potential to drive deep and durable responses that lead to long-term clinical benefits.
TAVO412 is an avidity driven trispecific antibody that engages multiple mechanisms of action to control different resistance mechanisms in solid tumors. We describe confirmation of target engagement in Phase 1A trials for patients struggling with mutant lung, esophageal, and colorectal cancers. In addition, we highlight the pharmacokinetic profiles, tolerability, and clinical responses.
Gyes is a science-driven biotech focused on advancing antibody therapeutics through the rational engineering of multispecific formats. We have developed a Multispecific Antibody Platform that leverages avidity engineering to design next-generation antibodies with enhanced selectivity and controllable functionality. Our approach enables conditional activation through the combinatorial engagement of co-expressed targets on defined cell populations. This mechanism allows selective modulation of immune cell function, improving therapeutic precision while minimizing off-target activity.
Clustering antibodies that restore normal receptor signaling can address the root cause of many diseases caused by gain or loss of function mutations in the receptor complex. The talk will illustrate the power of this approach by presenting data on the clustering antibody DIAG723 that restores ALK1 signaling impaired in people suffering from Hereditary Hemorrhagic Telangiectasia and Pulmonary Arterial Hypertension and describing its discovery using the technology that combines physics-aware deep learning and experimentation.
Adeno-associated virus (AAV) gene therapies face challenges in tissue-specific delivery and safety. We have developed bispecific Altibody for precise AAV retargeting to muscle and CNS. This innovative "plug-and-play" approach enhances on-target transduction efficacy and safety in mice, marking a milestone in AAV retargeting strategies for gene therapy applications.
Bright Peak Therapeutics is developing a portfolio of differentiated immunotherapies utilising novel chemistry-driven platform technologies. Our protein engineering and protein conjugation technologies enable the creation of unique ‘Bright Peak Immunoconjugates’ with unparalleled speed, flexibility and diversity. These next-generation biologics are often ‘first-in-class’ (e.g. PD1-IL18) and are composed of a therapeutic antibody conjugated to a protein (e.g. cytokines) as a payload. This presentation will outline the preparation and preclinical characterisation of BPT567, a PD1-IL18 immunoconjugate.
Photoimmunotherapy (PIT), built on our proprietary Alluminox™ platform, is a novel drug–device combination therapy that offers both precision and power. The therapy works by rapidly and selectively destroying targeted cancer cells with light activation, minimizing damage to surrounding healthy tissue while simultaneously triggering both local and systemic immune responses. The drug component of PIT is an antibody conjugated with a non-cytotoxic, light-activatable dye. Our first Alluminox-based PIT therapy, targeting EGFR, received regulatory approval for recurrent head and neck cancer in Japan in late 2020. Since then, more than 1,000 treatments have been performed in real-world clinical practice. In this presentation, we will: Review the scientific mechanism and unique advantages of PIT Share insights from clinical trials and real-world data Explore development prospects and its role in strengthening multidisciplinary oncology teams (MDTs) Discuss how PIT may help relieve the growing financial and logistical pressures facing the global healthcare ecosystem PIT has the potential not only to redefine cancer treatment, but also to rebalance the equation between clinical outcomes, patient quality of life, and healthcare sustainability.
Antibody-based "brain shuttles" can deliver therapeutic oligonucleotides to the brain, but the biophysical properties of payload can negatively affect pharmacokinetics. Engineered antibody complexes with additional binders are used to mask the payload. These engineered entities demonstrate improved specific targeting in cellular models, and improved PK and brain delivery in animal models.
VERAXA is applying dual targeting ADC concepts to broaden the therapeutic window of targeted chemotherapies. We present our bispecific ADC with superior tumor specificity combining an AND-gated, dual-targeting approach with our toxicity-reducing conjugation platform. Furthermore, we highlight the next generation in conditional active dual targeting concepts for ADCs: VERAXA’s BiTAC ADC platform, which enables selective killing of tumor cells while sparing healthy tissue.
ADCs deliver potent tumor killing but can be limited by Interstitial Lung Disease (ILD), poorly predicted by current models. We developed a human systemic co-culture linking primary alveolar tissue to tumor spheroids. DXd-containing ADCs (T-DXd and P-DXd) triggered tumor-potentiated lung injury, while emtansine-based T-DM1 did not, demonstrating assay specificity.
Standard bioassays often fail to capture the complexity of immune modulating biologics. This presentation examines the use of context specific in vitro models for T cell engagers in oncology and autoimmune therapies. Through representative case studies, we demonstrate how tailored assays including T cell activation, cytokine release, and target specific inhibition provide robust insights into drug potency, specificity, and mechanism of action, supporting more informed, data driven decision making in biologic development.
Developed by the team behind Sc2.0’s synthetic yeast genome, neoSwitch is a yeast strain that flips between surface display and secretion with a simple media change—eliminating antibody reformatting and host switching. Neo offers high-diversity naïve VHH and scFv libraries (>10^9) for rapid, first-pass discovery, and we routinely design, build, and transform custom libraries for partners. Paired with the Opentrons Flex, neoSwitch enables turnkey, automatable workflows—including protein purification—to accelerate hit-to-lead.
Epitope-selective antibodies (EsAbs) offer therapeutic specificity by targeting precise antigen conformations. To ensure optimal development, we prioritize antigen design, supplying domain- and epitope-specific antigens that guide the immune response against the exact functional region. This foundational step maximizes target accessibility and prevents unproductive engagement with hidden or cryptic epitopes. Our strategy enables the rational engineering of EsAbs with superior binding profiles, significantly enhancing their potential therapeutic efficacy and safety.
Plasmodium falciparum malaria remains a global health problem. Here, I will discuss our efforts to identify and characterize human antibodies against Plasmodium falciparum targets including their clonal evolution and target epitopes to inform the development of improved malaria vaccines.
Overactivation of FcyRI by immune complexes (ICs) has been implicated in various autoimmune disorders and neuropathy. To date, there are no effective FcyRI-specific blocking antibodies available. Here we report two first-in-class anti-FcyRI antibodies, with high affinity Fab-mediated binding within the IgG binding site on extracellular domain 2 of FcyRI. They effectively block IgG and IC binding in models for ITP and RA, and displace pre-bound ICs without activation.
Autoantigen-specific IgA autoantibodies correlate with disease severity in autoimmune and fibrotic diseases. The presence IgA/autoantigen immune complexes result in continuous CD89-mediated activation of myeloid cells, leading to severe tissue damage. Activation of myeloid cells is a highly underappreciated and untargeted in autoimmune diseases. We developed an antagonist humanized anti-CD89 antibody (JJP-1212), that by interfering with the IgA/CD89 axis, resolves IgA/autoantigen-induced inflammation and subsequent tissue damage in autoimmune and fibrotic diseases.
Nucleome Therapeutics tackles the molecular causes of inflammatory diseases through a breakthrough approach to 3D human genetics. NTP464 is a novel inflammation checkpoint identified using Nucleome’s proprietary suite of genetic approaches. Through understanding how genetic variation in patients living with autoimmune disease impacts the genome’s physical 3D interactions with protein-coding genes, Nucleome has uncovered a profound multi-cellular orchestrator of inflammation resolution with potential to move beyond current advanced therapeutics.
Antibody-based approaches targeting respiratory viruses such as influenza and corona have gained momentum. Traditionally, efforts have focused on systemic or subcutaneous administration. More recently, focus has shifted to intranasal administration for protection at the portal of entry. Preclinical efficacy and human safety studies have explored the challenges and advantages of local antibody delivery.
Current Treg-depleting strategies often affect both tumour and effector T cells, limiting therapeutic benefit. A target-agnostic cell-panning approach using the n-CoDeR phage display library identified antibodies that selectively target tumour-associated Tregs. These antibodies recognised both familiar and novel Treg targets, including a distinct ICAM-1 domain, achieving tumour-specific Treg depletion while sparing peripheral cells. This suggests potential for improved cancer immunotherapy and supports unbiased discovery of therapeutic antibodies.
Bispecific antibodies (bsAbs) can enable therapeutic mechanisms, such as dual antigen targeting or receptor agonism, that are impossible using monoclonal antibodies. BsAbs with IgG-like format (bsIgG) are comprised of two unique heavy chains, each having a cognate light chain. Co-expression of these four unique polypeptides often leads to several mispaired species that are difficult to separate from the target bsIgG due to their similar biophysical properties. Here we describe a set of mutations called ProAla that exploit a the unfolded protein response pathway of cells. ProAla heavy chains are engineered with higher folding energy barriers such that only the cognate light and heavy chains can induce folding, chaperone release and secretion. The structures of the ProAla Fab and Fc regions are identical in structure to normal antibodies, enabling maintenance of half-life and function. Mispaired polypeptides fail to secrete from the cell due to enhanced interaction with the endoplasmic reticulum chaperone BiP, resulting in increased purity of secreted bsIgGs.
Targeting pHLA class I and II at therapeutic resolution has been largely restricted to approaches building on the native TCR ligand as biologics or cell therapy. We here show how the special pIX phage display system has been optimized and combined with in silico guidance and deep sequencing as a unique platform allowing TCR-Like antibodies to enter this stage beyond the current state of the art.
TCR specificity to peptide-HLA antigens is central to immunology, impacting responses in infection, autoimmunity and cancer. Achieving precise recognition while avoiding off-target reactivity is critical for effective immunity and safe therapeutic interventions. Comprehensive, proteome-wide specificity profiling of TCRs is challenging with current methods, which notably lack integrated machine learning for large-scale analysis. Here, we report a synthetic immune cell system coupled with machine learning to enable TCR functional and specificity mapping of peptide-HLA antigens at proteome-scale.
This talk introduces N-myristoyltransferase (NMT) as a promising cancer drug target and presents the development of NMT inhibitors (NMTi) as a novel payload class for antibody–drug conjugates. Case studies with NMTi-ADCs will be presented to highlight robust pre-clinical activity. The session concludes with an overview of Myricx Bio’s advancing NMTi-ADC pipeline for solid tumor treatment to the clinic.
Selection of targeted antigen, linker, and warhead are crucial for the successful targeting of cancers with ADCs, whilst sparing healthy tissues. This presentation will focus on the design of novel ADCs for wide therapeutic index and IKSUDA Therapeutics’ ProAlk pro-drug platform which combines a payload with a first in class protein alkylation mode of action, with a proprietary, stable conjugation technology, PermaLink®.
The key components of Synaffix’s proprietary ADC technology GlycoConnect®, HydraSpace®, and the toxSYN® platform that enable ADCs with best-in-class therapeutic index potential will be presented. An overview on the pipeline of more than 30 GlycoConnect® ADCs that are rapidly being advanced by our partners will be provided, followed by sharing clinical development insights on the most advanced assets. Moreover, the exciting expansion of our toxSYN® platform with novel payload classes and dual-payloads will be presented.
This presentation will 1) Showcase the late preclinical development of Debio-1562M; 2) Recap lessons learned from progressing high DAR ADCs from discovery to the clinic and 3) Highlight how we are applying branched linker technology for novel ADCs and dual payload applications.
Araris' proprietary AraLinQ™ site-specific linker-payload conjugation technology enables the creation of stable, safe, and highly potent multi-payload ADCs in a single step, without the need for complex antibody engineering (such as deglycosylation, tag insertion, or incorporation of non-natural amino acids) prior to conjugation. The resulting ADCs consistently demonstrate high in vivo stability, antibody-like pharmacokinetics, and exceptional efficacy with favourable tolerability. We will present data showcasing ADCs targeting a range of oncology indications, as well as how the combination of multiple payloads within a single ADC can produce synergistic effects in mouse models, while maintaining excellent tolerability.
PIP is a versatile targeting peptide that binds selectively to multiple tumor-associated targets, a unique feature enabling payload delivery to virtually any solid tumor. This presentation focuses on the development of PIP-Drug Conjugates, their efficacy and safety, and how PIP’s multi-specific targeting overcomes resistance seen with conventional single-antigen targeting ADCs.
Tetraspanins are a superfamily of four-transmembrane proteins that serve as key organizers of membrane proteins and signaling complexes, playing essential roles in immune cell function. I will share our latest insights into the functions of the tetraspanins CD37 and CD20 in lymphocytes and B cell lymphoma. I will also introduce a novel immunotherapeutic platform that targets CD37 and CD20, demonstrating superior efficacy compared to current standard-of-care antibody therapies
This presentation celebrates fifty years of hybridoma technology that ultimately led to over 200 antibody therapeutics benefiting millions of patients. The evolution of antibody formats will be traced including bispecifics, antibody-drug conjugates, and CAR T cells. Future progress will surely be accelerated by artificial intelligence including multi-parameter optimization. Advances in conditional antigen binding and targeted delivery promise to expand the reach of antibodies to previously undruggable targets and diseases.
Although the first antibody-drug conjugate (ADC) was approved more than 25 years ago, progress was slow over the next 2 decades. There has been a surge of ADC approvals since 2019, with both traditional payloads as well as newer payload and linker technologies. Despite improved clinical activity vs. standards of care for different indications, ADCs have inherent toxicities that were somewhat unanticipated and have highlighted the limitations to current technologies. Recent efforts involve improved conjugation technologies, refining linker design and discovery of more targeted payloads, which will be the focus of this presentation.
In this presentation, I will describe how allometric scaling from the Tg276 humanized FcRn model enables accurate early-stage projection of antibody clearance and half-life in humans. I will outline the translational performance of the model across diverse antibody formats and show how the Tg276 model supports efficient lead selection, reduces reliance on NHP studies, and accelerates therapeutic antibody development.
Antibody discovery often slows because functional screening occurs too late, causing delays and high attrition, with teams pursuing non‑functional leads, slowing development and reducing program success. ProBio’s solution integrates ProSpeed™ Single B, Powerdoma™ and next‑gen phage display to enable very early functional screening, accelerating campaigns and significantly improving the success rate of identifying true functional antibody leads.
Prodrug-activating chain exchange (PACE) utilizes two inactive antibody derivatives that co-accumulate on tumor cells and undergo chain-exchange to reconstitute active CD3-binders. 1st generation PACE approaches were limited by some pre-mature activation and sub-optimal pharmacokinetics. The new Fab-PACE design includes Fc domains and presents prodrugs as single-chain Fabs. This maintains prodrug functionality with minimized premature activation and benign pharmacokinetics.
A major challenge in targeted drug delivery is to ensure efficient cellular uptake and precise intracellular trafficking of therapeutic molecules while minimizing off-target toxicity. Conditional affinity engineering offers a promising solution by designing molecular interactions that adapt to their microenvironment. In this work, we introduce a calcium-dependent binding mechanism as a powerful strategy to control target engagement and release. By integrating calcium-sensitive motifs into small, engineered protein domains, the binding affinity can be fine-tuned by leveraging the local calcium concentration, which is high in circulation but significantly lower within endosomal compartments. This tunable behavior enables reversible target interaction, driving the carrier molecule towards lysosomal trafficking while allowing receptor recycling at the cell surface. By targeting cancer-associated receptors, including the epidermal growth factor receptor (EGFR), we demonstrate how this principle enhances targeted delivery and payload retention. Structural modeling, biophysical characterization, and live-cell imaging confirm that calcium-regulated affinity provides precise spatial and temporal control of binding, dissociation, and payload delivery, resulting in potent cytotoxic effects when applied in protein–drug conjugates (PDCs). Together, these findings showcase how environmentally responsive affinity modulation, using native intracellular cues, can be harnessed to design the next generation of smart, selective, and effective targeted therapeutics.
T cell engagers (TCEs) show promise in solid tumors but are constrained by cytokine release and on-target, off-tumor toxicity. Amberstone’s T-MATE™ platform overcomes these barriers with a pH-gated, target-selective mechanism that adapts to tumor pH heterogeneity while maintaining an optimal therapeutic profile. This conditional strategy enables a new generation of TCEs that combines both safety and efficacy with broad applicability across diverse solid tumor indications.
Systemic toxicities from target expression on healthy tissues limit cancer therapy. The PrimeBody platform employs protease-cleavable linkers and affinity-tuned masking to generate tumor-activated biologics with exceptional systemic stability and efficient tumor activation. VOR-101, a masked, Fc-enhanced CD47 blocker, remains inert in circulation but rapidly activates in tumors, achieving >700-fold selectivity. It delivers ~100-fold higher exposure than conventional agents without toxicity, driving durable tumor regressions and a markedly improved therapeutic index.
PRO-XTEN™ masked T cell engagers (TCEs) are conditionally activated immune therapeutics designed to exploit dysregulated protease activity within the tumor microenvironment. This approach enables tumor-selective TCE activation while minimizing systemic toxicity. The XTEN mask serves a dual function: masking TCE activity and extending the half-life of the masked molecule, while the proteolytically activated TCE exhibits a short half-life, creating conditional pharmacokinetics that enhance tumor exposure while limiting systemic active drug circulation. Preclinical studies demonstrated: (1) robust masking with ~10,000-fold reduction in cytotoxicity in vitro; (2) potent anti-tumor efficacy in vivo at doses comparable to unmasked TCE controls; and (3) >100-fold improvement in maximum tolerated dose (MTD) in non-human primates. These findings support a significantly enhanced therapeutic window through tumor-specific activation and conditional PK. Clinical trials evaluating PRO-XTEN™ TCEs targeting HER2, PSMA, and EGFR are currently underway, with early data demonstrating the translational potential of this protease-activated platform.
Integrating process parameter screening, developability, and manufacturability is critical for ADC and bioconjugate success. This talk explores how early, data-driven process design connects to robust, scalable, and compliant manufacturing. By linking initial decisions to manufacturable processes in a top-down approach, we accelerate CMC readiness, mitigate scale-up risks, and reduce commercialization hurdles—streamlining the path from concept to commercial reality.
TUB-040 is a highly homogenous and hydrophilic DAR8 exatecan NaPi2b-targeting ADC built upon Tubulis’ ethynylphosphonamidate (P5) conjugation platform. The high stability and excellent biophysical properties of TUB-040 enabled by the P5 conjugation ensure efficient and sustained delivery of payload to tumor sites which translates into strong and durable in vivo efficacy in patient-derived xenograft models and a favorable preclinical tolerability profile. These data supported the advancement of TUB-040 into clinical phase I testing.
ATB Therapeutics is dedicated to pioneering novel biologics that incorporate differentiated cell-killing mechanisms, including enzymatic functionalities within targeted antibodies. These heterobifunctional antibodies combine multiple targeting and killing domains, enhancing their effectiveness and safety compared to traditional conjugates. Atbody's remarkable features stem from plant expression technology and aim to provide new therapeutic options for cancer and autoimmune disease.
Molecular simulations, including the SILCS (site identification by ligand competitive saturation) technology offer a detailed picture the interactions of warheads and excipients with monoclonal antibodies. These technologies allow for predictions of molecular interactions that can impact efficacy, stability, and viscosity as well as facilitate the interpretation of experimental data. Examples of the utilization of these methods and their information content will be presented.
Alexander D. MacKerell, Jr., Ph.D., Professor, University of Maryland and Chief Science Officer, SilcsBio, USA
Using TxPro, a genome-wide cancer proteomics database, we identified EGFR x EphA2 as a highly selective target pair in colorectal cancer. We report here the pre-clinical development of PBS293-01A, an ‘AND-gated’ EGFR x EphA2 bispecific MMAE ADC, that uses avidity-gated dual binding to improve selectivity while maintaining strong anti-tumour activity.
Maximizing the efficiency of PK screening assays during biotherapeutic development is advantageous when supporting multiple engineered antibody candidates and multiple programs. A microfluidic 1-hour generic PK assay using 10 µL sample and compatibility to rodent or non-human primate matrices eliminates assay development between molecules and accelerates time to results. A case study for a custom drug-specific assay for ADCs or total antibody assays will also be presented.
Explore a flexible, low-investment approach to bispecific T-cell engager discovery that enables rapid hit ID, parallel program advancement, and compressed timelines. Learn how Alloy has invested in creating optimized components and sequence-first strategies to reduce risk with a platform that has taken 12 antibodies to the clinic.
Bispecific T cell engagers (TcEs) must create an effective immunological synapse, yet how their structural features control potency is poorly defined. We combined solution structural analyses and synapse imaging on supported lipid bilayers to show that both intermembrane distance and complex rigidity critically determine TcE activity. Formats producing close contacts and reduced molecular flexibility enhanced co-stimulatory interactions and cytotoxic responses. These findings provide actionable design principles for next-generation TcE therapeutics.
Successful development of a T-cell engager relies on specifically localizing cytotoxicity to tumor cells of interest with minimal off-tumor activity across the body. Cartography's ATLAS and SUMMIT platforms analyze genome-wide expression profiles to optimally select single antigens and antigen pairs whose expression are restricted to cell populations of interest. This talk will discuss how these platforms have translated into the development of CBI-1214 and other T-cell engagers in Cartography’s pipeline.
Within the past decade, therapies that activate/engage T cells have changed the landscape of treatment of hematological malignancies. Successful T cell-engaging antibodies target antigens selectively expressed on tumors with minimal/no expression in other tissues and eliminate malignant cells resulting in long-term clinical benefit. Several bispecific T cell engagers have been approved in hematological malignancies. Recent research evaluates trispecific T cell engagers targeting two tumor-associated antigens in multiple myeloma/lymphoma.
T cell engagers are highly potent immunotherapeutic modalities. However, their broad application is constrained by on-target, off-tumor toxicity and CRS, resulting in a narrow therapeutic index. We present the development of a conditional, dual-antigen targeting trispecific TCE (TriMab) that integrates a synapse-gated design with affinity-tuned binding arms to achieve AND-gated tumor selectivity. Our work establishes synapse-gated, dual-targeting trispecifics as a next-generation framework for engineering safer and more precise T-cell therapeutics
The burgeoning enthusiasm for cancer immunotherapy is fueled not only by the extraordinary success of PD-1 inhibitors but also by significant advancements in cytotoxic drugs, radioligands, and the development of diverse bispecific antibodies, among other innovative options. These transformative breakthroughs have established a robust platform for exploring novel combination strategies aimed at enhancing therapeutic response rates and achieving durable, long-term anti-tumor immunity. A pivotal objective for the next phase of therapeutic innovation is the creation of combination therapies capable of converting immunologically unresponsive “cold” tumors into highly responsive “hot” tumors. This paradigm shift is expected to play a central role in driving the next revolution in cancer immunotherapy. Equally critical is the emphasis on developing comprehensive strategies to address safety concerns, ensuring the effective and secure implementation of these groundbreaking therapeutic approaches.
Our logic-gated CD3 Switch-DARPins are designed to overcome current limitations of T-cell engagers, such as the lack of clean targets and poor therapeutic windows. We developed a MSLNxEpCAM-targeted Switch-DARPin that contains CD2 costimulation and a masked CD3 moiety that is released to activate T cells only when both TAAs are co-expressed on target cells. This format allows for increased tumor specificity via rational selection of tumor target combinations.
Antibody Drug Conjugates (ADCs) are rapidly changing the clinical treatment of cancer, and these sophisticated therapeutics have multiple interactions within the tumor microenvironment (TME) that are important for drug design. In this talk, I will share our experimental and computational results highlighting the impact of the TME on the ADC, including macrophage and protease effects, and the impact of the ADC on the TME, such as immune activation.
Conditional logic-gated bispecific ADCs can be optimised to enable precise tumour targeting while delivering deeper and broader efficacy by integrating dual-antigen recognition. This approach enhances potency, mitigates on-target/off-tumour toxicities, and addresses intratumoural heterogeneity. The talk will highlight engineering principles, preclinical validation, and translational insights advancing this next-generation ADC modality.
OASIS is a European research program dedicated to optimizing the clinical use of antibody–drug conjugates (ADCs) by addressing resistance mechanisms. Through a multimodal approach integrating spatial tumor microenvironment profiling, genomics, liquid biopsies, and artificial intelligence–driven predictive modeling, OASIS aims to identify biomarkers of response and guide patient stratification. The project brings together academic, clinical, industrial, and patient partners to accelerate precision oncology.
To address critical challenges in ADC discovery, such as elucidating mechanisms of resistance and systematically identifying synergistic payload combinations, Turbine integrates transcriptomic, genomic, and protein–protein interaction data into computational “virtual cell” models. These models are trained on perturbation-response profiles to accurately recapitulate cellular behavior. In this presentation, we highlight the application of our virtual-cell–based screening framework for prioritizing synergistic payload partners, complemented by automated in vitro validation and mechanistic simulations that enable detailed interrogation of resistance pathways.
As the field increasingly recognizes the limitations of traditional cytotoxic payloads, differentiation through novel mechanisms of action has become essential. Amanitin-based ADCs, with their unique inhibition of RNA polymerase II, exemplify this next wave of innovation, designed to overcome resistance mechanisms. The Phase I/IIa experience with HDP 101, an anti-BCMA ADC with amanitin as novel payload, provides a clear view of the translational path associated with developing a first in class ADC payload. During dose escalation and at doses below the MTD, HDP‑101 has demonstrated objective responses, including complete remissions, in patients refractory to currently available therapies, including prior treatments directed at the same target.
Antibodies are one of the most studied molecules to date, and they have proved to be successful biotherapeutics as well as critical reagents for both basic and applied research. The wealth of information about antibodies has afforded investigators the ability to modify critical functions of antibodies through sequence-based and/or structural modifications. One key function of antibodies is to serve as a bridge between innate and adaptive components of the immune system. This is accomplished in part through engaging target antigen through the variable regions, and then engaging humoral and cellular components of the immune system through the fragment crystallizable (Fc) region. Fundamental sequence and structural insights have afforded investigators the ability to impart novel functionalities, but at times with unintended consequences. The intent of this review is to provide a historical perspective on critical insights that have informed modern Fc engineering efforts and how these efforts have led to antibodies with enhanced or novel functionalities. Discussion will also be presented on how the emerging field of computational protein engineering could provide new opportunities to modulate antibody Fc effector functions.
Antibodies bridge innate and adaptive immunity through their constant (Fc) domains, yet most of Fc functional space remains unexplored due to experimental constraints. To address this, we developed an AI-guided platform for Fc-engineering. By integrating the screening of synthetic Fc-libraries with next-generation sequencing and deep learning, we built FcGPT – a protein language model that designs antibody Fc-variants with bespoke Fc-receptor binding profiles, unlocking new possibilities for antibody design and immunotherapy.
Immunostimulatory antibodies targeting immune receptors represent an exciting new modality for immunotherapy. Using TNFR superfamily receptors as a paradigm the role of isotype, epitope and affinity have previously been explored. Recently, the modification of the antibody hinge has been investigated as a hitherto unexplored means to tune and mediate powerful receptor agonism. The various approaches to exploit the hinge will be presented.
This talk outlines a framework for optimizing antibody pharmacokinetics by quantifying the impact of Fv charge, molecular formats, and Fc-FcRn engineering. We demonstrate that complex formats significantly influence PK, revealing that Fc-mutations face a "recycling ceiling" inherent to specific architectures. These insights provide actionable guidelines for selecting optimal design strategies, ensuring therapeutic clearance is maximized within the structural constraints of modern antibody engineering.
Fc receptors mediate immunoglobulin effector functions. We show human FcRL5 (but not its mouse ortholog) binds IgG-Fc via avidity, requiring two IgG-Fc molecules in close proximity. This enables recognition and internalization of IgG immune complexes by FcRL5. These results unveil a novel avidity-governed binding mode.
Tripartite motif-containing 21 (TRIM21) is attracting interest for its ability to neutralize antibody-bound viruses and to mediate antibody-dependent degradation of tau, a driver of neurodegenerative disease. Its binding site on IgG overlaps with that of the neonatal Fc receptor (FcRn), which is responsible for IgG`s long plasma half-life that can be extended by Fc engineering. Here, we discuss how such FcRn engineering influences TRIM21 binding and effector functions.
Influenza A viruses pose a persistent public health challenge due to antigenic diversity, rapid evolution, and zoonotic reservoirs with pandemic potential, as highlighted by recent H5N1 spillover from cattle to humans. Immune history shaped by repeated exposure complicates both prevention and therapy. We show how isolating and functionally characterizing human hemagglutinin-targeting antibodies reveals cross-reactive immunity, identifies conserved vulnerabilities, and informs strategies for antibody-based therapeutics and vaccine design.
Monkeypox is a dangerous virus, and some of its key targets for immunity are still unknown. We discovered antibodies that recognize a viral protein called A28 and showed they can strongly neutralize Monkeypox and related viruses. Vaccinating mice with A28 triggered powerful immune responses and fully protected them from infection. These results suggest A28 could improve future Monkeypox vaccines.
Serological antibodies represent an immunologically distinct compartment from B-cell repertoires that is often overlooked by genetic methods. A novel proteomics platform enables standalone protein-level discovery from complex human serum, sequencing unique antibodies absent in B-cell data. In a COVID-19 benchmark with zero prior B-cell neutralizers, we identified 18 distinct clones, yielding 8 neutralizers (3 highly potent, <0.2 µg/mL IC50), facilitating a pathway to real-world therapeutic discovery across diseases.
Mabylon’s allergy pipeline leverages naturally occurring human antibodies to generate multispecific therapeutics targeting disease‑relevant allergen epitopes. Lead candidate MY006, a tri‑specific anti‑peanut antibody designed for low‑frequency dosing, blocks IgE binding and suppresses allergic effector‑cell activation, and is currently under investigation in Phase 1 studies. The broader pipeline applies the same discovery engine to additional food and environmental allergens, including birch allergy, with the potential to fundamentally transform allergy treatment.
Neonatal Fc receptor is a popular target for treatment of autoimmune disorders due to its role in maintaining IgG levels. Fc-ABDEG and albumin-binding VHH were combined to develop next-generation FcRn blockers with improved IgG clearance. Step-wise engineering was applied to optimize position and number of VHHs, their affinity to albumin, and the linker connecting it to Fc-ABDEG. Novel FcRn-based cellular assays and effects in human FcRn transgenic mice are included.
Developers of protein–drug conjugates remain constrained in choosing conjugation sites. Our GoldenSite platform leverages stop-codon suppression to install synthetic amino acids at any position in any protein, enabling highly efficient, catalyst-free third-generation click-chemistry to precisely attach diverse payloads. We enable systematic site scanning across antibodies and novel formats yielding optimized developability and efficacy.
Glioblastoma (GBM) is a highly aggressive malignant brain tumor with an extremely poor five-year survival rate, largely due to two major therapeutic obstacles: the blood-brain barrier, and the high heterogeneity of the tumor itself. In this context, bispecific antibody-drug conjugates (BsADCs) represent an emerging therapeutic strategy designed to overcome these challenges by simultaneously targeting two distinct antigens or epitopes. Our new bsADC candidate, DL332 (IL3RA x hCD98hc), exploits the CD98 receptor-mediated transcytosis pathway to facilitate improved transport across the blood-brain barrier, a significant limitation for conventional monoclonal antibody-based ADCs . Preclinical studies substantiate this design advantage, demonstrating that DL332 achieves a brain concentration of 16 nM in mice—tenfold higher than the monospecific ADC DL331, which lacks CD98 targeting capability . This enhanced brain delivery correlated with superior suppression of tumor growth in an orthotopic glioma model, highlighting the potential of this dual-targeting approach. Consequently, DL332 exemplifies a rational BsADC design that improves the distribution and efficacy of ADC drugs within the brain, offering a promising therapeutic avenue for tackling glioblastoma.
Elevated circulating CD30 (sCD30) has been associated with poor outcome in patients treated with brentuximab vedotin (BV). To address this limitation a tumor-selective pH-sensitive anti-CD30 ADC (MQI-181) was designed to exploit the acidic tumor microenvironment and preferentially target tumor CD30 and not its plasmatic form. In a preclinical lymphoma model, MQI-181 induced complete tumor regression and demonstrated superior antitumor activity compared with BV in the presence of sCD30. These results validate pH-sensitive targeting as a strategy to overcome antigen sink effects and improve therapeutic index.
The clinical success of ADCs and other bioconjugates, such as oligo-protein conjugates, depends on maximizing therapeutic index while minimizing off-target toxicities. This presentation highlights how NJ Bio’s integrated, chemistry-driven platform accelerates development timelines and improves quality through rational structural design, advanced analytics, and scalable conjugation strategies.We demonstrate how linker-payload design and oligo-protein conjugation chemistry directly influence biological activity, safety, manufacturability, and scalability. As a case study, we address the clinical challenge of interstitial lung disease (ILD) associated with Enhertu (trastuzumab deruxtecan). We developed and validated a robust murine model that recapitulates the delayed-onset pulmonary pathology observed clinically and in non-human primates, enabling dose- and schedule-dependent safety assessment. Using this translational platform, we screened over 200 chemically distinct linker-payload candidates, identifying lead candidates that maintain antitumor efficacy comparable to trastuzumab deruxtecan while demonstrating markedly reduced pulmonary toxicity.
Many tumor-associated antigens (TAAs) targeted by antibody therapies are also present in health tissue, causing on-target off-tumor toxicity, affecting treatment safety and limiting combination options. Our innovative universal masking platform, ByonGuard, is designed to improve the therapeutic index of antibody-based therapies without the need for bespoke masking peptides. Preclinical data support ByonGuard masked ADCs featuring high potency and efficacy with safety and PK/PD studies supporting an increased therapeutic index.
Join fellow attendees, speakers, exhibitors and poster presenters in the exhibit hall and conference area for an evening of food, drink, poster/exhibit viewing and networking.
The cell surface proteome, the surfaceome, is the major hub for cellular communication and a primary source of drug targets. We have been developing new proteomic approaches to probe the surfaceome for novel cancer-associated changes in expression, proteolysis, glycosylation, immunopeptidomes, and complexes. This has lead us to build new TCE’s, ADC’s, and extracellular targeted degraders (eTPD) to better attack the cancer surfaceome.
Inhibitory receptor agonism is important for maintaining normal immune homeostasis in healthy individuals. Agonizing inhibitory receptors with antibodies offers a differentiated approach for treating the uncontrolled inflammatory responses observed in autoimmune disease. Understanding and mimicking the biology of natural receptor and ligand interactions is critical for designing therapeutics with optimal inhibitory receptor agonism, and can differ from traditional therapeutic antibody discovery approaches.
The measles vaccine is a global success story, yet what human antibodies are elicited by this vaccine and their structures remain unknown. We generated a large panel of human mAbs from a vaccine, mapped epitopes biochemically and by cryoEM and found potent neutralization and in vitro protection via complementary mechanisms. mAbs against both the attachment antigen H and fusion antigen F are protective and offer therapeutic cocktails for treatment or prevention.
Over the past century, our industry progressed from identifying natural products with favorable pharmacology mediated by unknown molecular mechanisms, to deliberate engineering of biologics that engage prespecified targets and alter their activities in predefined ways. The past two decades have seen the emergence of an entirely new category – multispecifics – that engage two or more targets. This elicits emergent properties that enable biologics to circumvent natural barriers to pharmacology, including rapid clearance, functional redundancy, on target/off-tissue toxicity, and lack of druggable features. I will discuss how multispecifics are recalibrating expectations of what can be achieved through pharmacotherapy.
Cell surface proteins are key regulators of cellular signaling, metabolism, and interactions with the surrounding environment. A promising approach to modulating their function is through the control of endocytosis and intracellular trafficking. Under normal physiological conditions, cells use these processes to maintain membrane protein homeostasis and attenuate signaling, yet their therapeutic potential has only recently begun to be explored. In this talk, I will discuss how bispecific antibodies can be designed to modularly control membrane protein endocytosis and signaling, including for growth factor receptors and G protein–coupled receptors, and describe the underlying mechanisms by which these molecules function, with comparisons to traditional antagonists and their potential clinical implications. I will also share mechanistic insights into Ivonescimab, an anti-PD-1/VEGF antibody, and how its mechanism may differ from the use of anti-PD-1 and anti-VEGF antibody combination therapies.
Alloy’s integrated antibody discovery and optimization platform combines yeast display with cell-based screening to deliver high-affinity, biologically relevant antibodies with rapid turnaround. By uniting on-cell binding validation with
quantitative affinity maturation, Alloy expands what is druggable across low copy number and structurally complex targets. This approach enables multi-parameter antibody discovery and optimization, and has demonstrated success across challenging programs, accelerating the path from initial discovery to viable therapeutic candidates.
Advances in protein engineering have enabled multispecific antibodies (e.g., bispecifics, trispecifics, and T-cell engagers) with enhanced selectivity, potency, and safety through multi-epitope binding. However, their structural complexity introduces new CMC challenges, including asymmetric chain pairing and unique post-translational modification profiles that deviate from monoclonal antibody norms. Wheeler Bio is extending this work using machine learning and hybrid mechanistic process modeling to expand from traditional mAbs and extend these data-driven strategies to complex engineered antibody formats.
Rigaku developed an EDT technology that can image huge molecules and complexes in solution without prior information or the need for crystallization/freezing/fixation/labeling processes. This enables overnight direct epitope mapping, molecular defect and aging monitoring during culture and purification processes, nucleotide-protein quantitation of vector complexes, and observation of defects in particles using the molecular 3D image under specified conditions.
Developability assessment remains a bottleneck in early antibody discovery. PAIA´s plate-based developability assay platform provides a fast and easy-to-automate way to characterize hundreds of thousands of molecules per day.
In this presentation we show developability data for different sample sets of mAbs, VHH-Fc Fusions and bispecifics and compare the results with orthogonal methods and published data.
Add-on this pre-conference training course to your main conference registration package for an additional fee and gain a comprehensive overview of antibody engineering in an easy-to-follow classroom setting to help you prepare for the main conference program.
- Training course registration begins at 8:00am.
- Break Schedule:
- AM Break: 10:30-11:00;
- Lunch: 12:30-1:30;
- PM break: 3:00-3:30
TRAINING COURSE OVERVIEW
Today’s wealth of knowledge of protein structures will be reviewed along with the genetics of diversity generation of antibodies, to give insights into the best strategies for improving protein function. There is particular emphasis on the choice of a functional assay to effectively monitor the changes in a desired property, and the use of functional enrichment steps where a library approach is employed. Not only is amino acid sequence amenable to engineering, but glycan structures and other modifications may also be engineered. The course will focus on the engineering and enhancement of antibodies and antibody-like scaffolds. Examples will include work on antibody fragment affinity improvement by 100-fold to low pM affinity. Also, the engineering of bispecific antibodies by diverse approaches and the adaptation to generate Chimeric Antibody Receptor (CAR) constructs will be discussed. Expression platforms for producing antibodies for testing and for manufacture will also be covered. A background in biochemistry and molecular biology is useful, as the course is designed to progress rapidly from simple to advanced concepts.
INSTRUCTOR
David Bramhill, Ph.D., Founder, Bramhill Biological Consulting, LLC and Research Corporation Technologies
COURSE AGENDA
• Functions amenable to engineering: affinity, specificity, stability,
solubility, immunogenicity
• The measure of success: functional assays
• Engineering by design
• Engineering by random mutation
• Designed libraries
• Display technologies
• Improving manufacturing by protein engineering methods
• Glycosylation engineering – function and homogeneity
• Other protein modifications
• Immunogenicity engineering
• Bispecific antibodies
• Antibody-drug conjugates (ADCs)
• CAR-T strategies
• Expression of antibodies and fragments for discovery and testing
• Manufacturing platforms for antibodies and fragments
Optimizing antibodies for efficacy requires careful consideration of several factors, including biology, modality selection, ADME (adsorption, distribution, metabolism, and excretion) and developability. In this workshop, we will provide an overview of these topics and share examples to highlight their importance.
Implementing high throughput developability workflows early in biologics generation guides optimized lead selection. Addressing sequence liabilities, chemical modifications, immunogenicity, and biophysical issues accelerates development and reduces failures. Complex formats like antibody-drug conjugates and bispecifics pose challenges requiring tailored strategies for successful developability and clinical outcomes.
Immunogenicity of biopharmaceuticals can affect their safety and efficacy. Mitigation of this risk should start early in development, at the drug design phase. This presentation discusses incorporating advanced in silico and in vitro de-immunisation tools into protein engineering processes to select a lead candidate that balances immunogenicity risk and desired biophysical properties.
The development, delivery, and efficacy of therapeutic antibodies are strongly influenced by multiple types of molecular interactions mediated by their variable regions, including both specific and non-specific interactions. Here we report interpretable machine-learning models for identifying high-affinity mAbs with optimal combinations of low off-target binding and low self-association, and demonstrate that these co-optimal antibodies display drug-like properties both in vitro and in vivo.
BigHat Biosciences uses AI/ML and a high speed automated wet lab to rapidly design and optimize safer, more effective therapeutic antibodies. Our platform combines machine learning with experimental data to iteratively improve candidates based on key properties such as affinity, function, and developability. We've leveraged our platform to create antibodies with enhanced functionality, such as pH selectivity, logic gating, and avidity-optimized T cell engagement, demonstrating the power of AI/ML to overcome key challenges in antibody development.
This session will offer perspective on what it takes to create value for biotechnology companies with a focus on early-stage (seed and Series A) therapeutics companies.
New antibody therapies span a wide range of indications with varying development costs and complexity. Partnering programs validates technology platforms, brings resources to bear, and raises funds, but dilutes ownership and long-term value. Novel antibody case studies from a range of program development stages and company sizes will be critically discussed.
The patent landscape for antibody therapeutics is rapidly evolving, with overlapping technologies and filings leading to complex freedom-to-operate issues as well as increasingly higher hurdles to obtaining patent protection. Developing robust patent estates that meet this challenging legal environment can be a key to success. Strategies for navigating this environment will be discussed.
Over the last several years, China has rapidly emerged as a leader in global drug development, now surpassing the US in the number of active clinical trials. This advancement is the result of a decade long Chinese national strategy to invest in and develop a leading biopharmaceutical industry. The implications of these changes for US biotech and biopharma will be discussed.
Are you within 10 years of completing your Master’s or Ph.D. and under the age of 35? If so, unlock a range of exclusive benefits by selecting the "Early Career Scientist" pass when you register. This session will spotlight short, novel research presentations from early career scientists in the antibody engineering and therapeutics community. You’ll also hear an inspiring career journey from a distinguished mid-career scientist, plus enjoy the opportunity to connect and network with peers. You’ll also receive free admission to the afternoon pre-conferences workshops on December and the opportunity to present a free poster during the main conference. Please Note: Access to the early career scientists session is only available to those who register for the main conference by selecting the “Early Career Scientist” pass. All passes subject to approval by conference organizers.
To be considered for a short oral presentation in this session, or for general information about this session, please contact Michael Keenan at Michael.keenan@informa.com
If you are interested in sponsoring this session, please contact Blake Shuka at Blake.Shuka@informa.com
Antibody-based degraders represent a promising therapeutic modality with the potential to selectively target cell surface and extracellular proteins with high specificity and potency. While the mechanisms of lysosome-targeting degraders are generally well-characterized, the precise mechanisms underlying cell surface E3 ligase-based degraders—such as PROTABs and AbTACs—remain less well understood. In our study, we have demonstrated that PROTABs designed to recruit the cell surface E3 ligase ZNRF3 facilitate target protein degradation through various mechanisms of action, influenced by factors such as the degrader’s target-binding arms and ZNRF3 expression levels. Using comprehensive biochemical and cellular assays, we are currently characterizing downstream processes, including target ubiquitination and subsequent degradation. Furthermore, ongoing work explores key parameters affecting the efficacy of PROTABs, such as ternary complex formation and geometric configuration. Our work aims to elucidate the mechanistic underpinnings of cell surface E3-based degradation and establish essential design principles for engineering highly effective antibody-based degraders tailored to meet diverse therapeutic needs.
At Monod Bio, we’ve developed the NovoBody platform, which leverages AI-enabled computational protein design to generate novel binding molecules that exploit the binding interfaces of existing antibodies or antibody fragments. The process eliminates suboptimal properties of the original molecules while enhancing key functionalities without requiring extensive discovery campaigns. The result is small, single-chain, highly stable molecules that are easy to manufacture in both bacterial and mammalian cells, with customizable properties and formats. We have applied this design approach to generate high-valency constructs with a unique chain (4-8 binding sites) as well as bi-specific molecules multivalent molecules for diverse life science applications.
Influenza viruses rapidly mutate to evade host antibodies, a process known as antigenic drift. Antigenic drift occurs dominantly in the hemagglutinin (HA) head domain as antibodies preferentially target more mutable and accessible head epitopes. The receptor binding site (RBS) of the head domain is broadly conserved, reflecting its essential role in viral entry by binding to terminal sialic acids (SAs). Previous work has shown that the RBS epitope is targeted by antibodies, typically with longer than average CDR3s that serve to mimic SA receptor by occupying the RBS pocket. Whether RBS-targeting antibodies drive antigenic drift in this broadly conserved epitope has not been investigated. We identified mutations in and around the RBS acquired by post-2015 H1N1 viruses: K133aN, N159K, S186P and D190A. We produced recombinant HAs (rHAs) and rescued viruses with single or combinatorial mutations at these sites to elucidate how these residues impact humoral evasion and receptor binding. Our data demonstrate that K133aN, N159K, S186P and D190A evade RBS-specific mAb binding, though differentially across clonal families. This is supported by cryo-EM structures demonstrating two main classes of RBS-specific mAbs directly interacting with K133a, N159, S186, and D190. Interestingly, these clonal families differ in their angle of approach but utilize the same lambda light chain (VL3-21) paired with different heavy chains (VH4-59 and VH4-38-2, respectively). The first class of mAbs (VH4-59/VL3-21) has a paratope only composed of heavy chain contacts. They also possess a long CDR3 loop, which mimics SA binding within the RBS pocket to block receptor binding. The second class of RBS mAbs (VH4-38-2/VL3-21) has a shorter CDR3, interacts with the HA via both chains, and blocks RBS accessibility by binding to contacts in and around the binding pocket. Notably, K133a and D190 are common contacts made by both classes of RBS mAbs. Finally, we ran a panel of rescued viruses and rHAs through biolayer interferometry, glycan array, and modified hemagglutination assays to understand how mutations at positions 133a, 159, 186 and 190 impact receptor binding breadth, affinity, and avidity. We report S186P increases receptor binding breadth and affinity against a2,6 SAs, while D190A significantly restricts this profile and reduces affinity. Together, these data illustrate antigenic drift does occur within the RBS but under the constraints of balancing antibody evasion and receptor binding. These data establish that K133aN, N159K, S186P and D190A are RBS mAb-evading mutations, but also have differential consequences for receptor binding.
OptiMAL™ represents the World's first platform using a fully synthetic human antibody library that can be screened using Mammalian Display in the native IgG format. The results shown will demonstrate that this platform can be used for the discovery of antibodies with high specificity, developability and yield, in a competitive timeframe. Followed by the knowledge that a rationally designed synthetic library can out-perform more traditional library design methods.
Speaker #1: Next-Gen BsAb Manufacturing: How TurboCHO Ensures High Productivity & Purity in Manufacturing
This presentation will introduce GenScript’s TurboCHO™ technology, an integrated, DOE-driven workflow that optimizes cell lines, vectors, and media to fine-tune chain ratios and boost yields. A streamlined, customizable purification strategy using advanced chromatography further improves product purity.
Speaker #2: Structure First Approaches to Vaccine and Antibody Design
Rational vaccine design is predicated on a deep molecular understanding of epitope-paratope interactions between antibodies and cognate antigens. Generating these data can be quite laborious, time consuming, and at great cost. To accelerate this process we developed a hybrid structural and bioinformatic approach to directly assign the heavy and light chains, identify complementarity-determining regions and discover antibody sequences from cryoEM density maps of serum-derived polyclonal antibodies bound to an antigen. When combined with next generation sequencing of immune repertoires we can specifically identify clonal family members, synthesize the monoclonal antibodies and validate their binding interactions. This structure-based approach for identification of monoclonal antibodies from polyclonal sera opens new avenues for analysis of immune responses, iterative vaccine design, and monoclonal antibody discovery. Continuous technological developments such as automation of data processing and structure interpretation as well as assay miniaturization further increase the throughput and accessibility of our approach.
AI/ML for biotherapeutics is constrained by the scale and quality of training data. In this session, Twist Bioscience will present multiple workflows for strategies to bridge this gap using high-fidelity synthetic DNA platforms and bespoke data outputs that integrates next-generation synthesis and production and characterization directly into the Design-Make-Test-Learn cycle. Case studies will illustrate how LLMs are validated using Twist “off-the-shelf” data sets, how high-throughput iterations of make-test cycles can be used to compare and train new models, and when in silico (de novo) designed libraries coupled with wet-lab panning and screening can simultaneously generate lead therapeutic candidates while also validating and training generative models. Join us to learn how scalable and innovative antibody services transform ML into a powerful engine for rapid biotherapeutic discovery.
The successful discovery of therapeutic-quality antibody binding domains is essential for enabling an expanding range of biologic drug modalities and meeting the demands of increasingly complex therapeutic designs. To ensure efficient and economical preclinical and clinical development, key parameters, including specificity, affinity, potency, and biophysical properties, must be addressed as early as practical to facilitate optimal lead selection. The initial choice of antibody discovery platform, particularly one capable of generating molecularly diverse panels of antibodies with drug-like qualities and that target a broad variety of epitopes, is therefore critical. Here, we present data illustrating how AlivaMab Biologics integrates these elements through the evolution of the AlivaMab Mouse technologies and the implementation of flexible platform processes and multiparameter assessment strategies that enable the identification and selection of optimal therapeutic antibody leads.
The conditions for Plasmids, Transient HEK293 and Transient/Stable CHO from 96 well, 24 well, 6 well, 125mL-7L Optimum Growth flasks need to be maintained at small scale. Data will be presented on techniques and technology that allow for getting high amounts of protein in smaller volumes with fast techniques from 1mL-3L. This allows teams to get to IND molecules quickly. All of these techniques are proven technologies for protein production, structural biology, and can lead to successful clinical candidates.
Therapeutic peptides are an important class of drugs offering advantages over both small molecules and antibodies due to their combination of high target specificity, structural flexibility, and low immunogenicity risk. Unlike traditional peptide drug discovery that relies on rational design or natural scaffolds optimized with in vitro methods, we introduce OmniUltra, a platform to generate structured peptides to human drug targets through in vivo optimization of ultra-long HCDR3 "knob" sequences in a divergent host species. We describe the isolation of knob-derived peptides as high-affinity and highly specific autonomous binding units.
Gyes Bv is a science-driven biotech start-up committed to exploring new frontiers in antibody therapeutics. We developed the Multispecific Antibody Platform, which we use to discover and develop precision multifunctional antibodies that build on novel insights in avidity engineering. Here I will discuss our progress in designing antibodies that become conditionally active upon binding to combinations of targets co-expressed on select cell populations.
Despite advances in cancer therapeutics, new protein targets and targeting approaches for drug development are needed. We developed a high-resolution proximity labeling technology using photocatalyst-generated reactive probes to label discrete cell surface protein microenvironments. Utilizing our platform to identify proteins inherently proximal to EGFR, we identified CDCP1. This led to the development of IDP-001, a novel bispecific ADC targeting EGFR and CDCP1. Identification and characterization of IDP-001 will be presented.
Despite the curative potential of cancer immunotherapy, most patients do not benefit from existing treatments. Glyco-immune checkpoints – interactions of cancer glycans with inhibitory glycan-binding receptors called lectins – have emerged as prominent mechanisms of resistance to molecular and cellular immunotherapies. I will describe development of antibody-lectin chimeras: a biologic framework for glyco-immune checkpoint blockade that is now moving toward the clinic.
Celiac disease is an autoimmune disorder in which ingestion of gluten damages the small intestine in genetically predisposed patients carrying HLA-DQ2.5 haplotype. DONQ52 is a novel neutralizing antibody that exhibits broad cross-reactivity against multiple gluten peptide/HLA-DQ2.5 complexes. In this presentation, we will present the identification of the lead antibody, its multidimensional optimization process, and the key characteristics of DONQ52.
While there has been substantial innovation in bispecific engineering, approaches to bispecific discovery have thus far been cursory, often narrowly focused on pre-determined target pairs of known biology. Dualitas has built a bispecific discovery engine that operates at combinatorial scale, enabling functional screening of cell surfaceomes at vast target and epitope space. Large unbiased screens have illuminated novel co-target biology and yielded an emerging bispecific pipeline of I&I programs with differentiated activities unachievable by conventional inhibitors. Concomitantly, observations of repeatable activities are elucidating a novel collection of immune engagers, plug-and-playable mechanisms and antibody arms that can bring superior pharmacology to established therapeutic pathways.
Oral delivery of antibodies directly to intestinal tissue would allow IBD treatment without systemic exposure or injections. Sorriso VHH single domain antibodies are engineered for stability among intestinal and inflammatory proteases, enabling oral dosing. SOR102 is an anti-TNF/IL-23p19 bi-specific formulated into room-temperature stable enteric-coated mini-tablets. On exposure to intestinal trypsin, the SOR102 trypsin-labile central linker is cleaved, liberating each monomer for intestinal tissue entry. SOR102 was evaluated in healthy volunteers and ulcerative colitis (UC) patients in a Phase 1 first-in-human study (NCT06080048). SOR102 was safe and well tolerated with minimal systemic exposure. However, consistent micromolar levels of active monomers were detected in UC patient feces and monomers were measured in UC colonic tissues. In the SOR102 BID arm, there was a strong alignment between UC clinical activity, tissue [drug], and pharmacodynamic outcomes. Thus, SOR102 delivered local TNFa/IL-23 inhibition within the inflamed GI tissue of UC patients, while limiting systemic exposure.
We have commenced efforts to engineer knottins and cyclins as general-purpose binders for a variety of applications where their rugged durability would be enabling (e.g. oral delivery, cytoplasmic delivery, radioligand therapy). Occupying a parameter space intermediate between antibodies and small molecule drugs, these molecules present new challenges and opportunities for protein engineering.
We have discovered and characterized the first-ever Nanobodies that act as positive allosteric modulators (PAMs) of clinically relevant inhibitory immune checkpoint complexes (ICCs) that enhance receptor signaling with pathway-specific and spatio-temporal precision. Such ICC PAMs open up novel therapeutic modes of intervention that ensure patient safety, even in cases of overdose, and may outperform current inhibitor-based immunotherapies, which often cause significant side effects.
Immunogenicity is a major challenge in biologic drug development, compromising efficacy and safety. Our ADAx platform selectively suppresses B cell activation against therapeutics while preserving normal immune function and drug activity. It enables strong ADA suppression and improved pharmacokinetics in vivo, offering a versatile solution across protein and antibody formats.
The precise depletion of immune cells is a key therapeutic strategy for a wide variety of autoimmune diseases. Recently, T cell engagers have been used to redirect T cell cytotoxicity for highly effective depletion of B cells in patients with refractory autoimmune diseases. In this lecture, I cover the development history of T cell engagers, emerging data in patients with autoimmune disease and theoretical and practical considerations for their design and use. Finally, I review emerging approaches for cell depletion and emerging targets.
Melanocortin receptor 4 (MC4R), a class A GPCR, suppresses appetite upon activation, but current peptide agonists lack receptor selectivity. Using Confo technology, we stabilized active-state MC4R with a conformation-selective ConfoBody to discover potent, MC4R-specific VHH agonists. We identified the most potent VHH and resolved its structure bound to the orthosteric pocket. This highly specific VHH offers a promising candidate for selective anti-obesity therapy via MC4R activation.
We will discuss the pros and cons of bispecific T-cell engagers (TCEs) relative to CAR-T cell therapies as well as protein-engineering strategies that can be employed to address limitations of TCEs for cancer therapy.
The use of T-cell engagers in solid tumors is currently limited by the availability of antigens that distinguish cancerous from healthy tissues. Using a lab-integrated, AI/ML-driven antibody engineering platform, we demonstrate that potent T-cell engagers can be rapidly generated against well-known solid-tumor targets, achieving robust tumor clearance without the typical on-target toxicities. We highlight case studies featuring both avidity-based and Boolean logic-controlled T-cell engager architectures across multiple solid malignancies.
Using an entirely original strategy, we have developed a novel platform that uses dual-binding antibodies to generate therapeutics with targeted, conditional activity only when bound to a selected marker. We are currently applying this Antibody Controlled Therapeutic technology to multiple targets, including PD1, LAG3, ATP, and LRRC15 and to multiple effectors including IL-2, IFN-a, IL-12 and TGFb inhibition.
While IL-2 has been shown to be key cytokine for the promotion of T-cell proliferation and effector function, its clinical use for cancer immunotherapy has been limited by severe toxicities. This talk describes the pre-clinical development of REGN10597, a PD-1 targeted receptor masked wild type IL-2 that demonstrates potent in vitro and in vivo activity when targeted to PD-1 expressing T cells but lowered systemic activity in the absence of targeting.
Targeted therapy with covalent inhibitors of oncoprotein KRAS(G12C) are initially effective but typically lack durability due to cancer cell resistance. MHC presentation of the covalently modified KRAS(G12C) peptides on the cell surface creates synthetic neoantigens that can be stabilized and targeted by antibodies across HLA restriction. Conversion to T-cell engagers affords a unique combination of targeted and immune therapy.
We are developing dual-payload ADCs that enable delivery of two different payloads simultaneously to the tumor with the goal of enhancing therapeutic efficacy and overcoming resistance mechanisms. Leveraging our cell-free platform, we precisely control payload placement and ratio to optimize efficacy. Preclinical data demonstrate superior efficacy in vitro and in vivo over single-payload ADCs, with favorable pharmacokinetics, stability, and safety.
PIP is a versatile targeting peptide that binds selectively to multiple tumor-associated targets, a unique feature enabling payload delivery to virtually any solid tumor. This presentation focuses on the development of PIP-Drug Conjugates, their efficacy and safety, and how PIP’s multi-specific targeting overcomes resistance seen with conventional single-antigen targeting ADCs.
Radiotherapy remains a cornerstone of cancer treatment, yet its efficacy is often limited by normal tissue toxicity and tumor resistance. This talk will highlight a translational strategy to enhance radiotherapy by leveraging antibody-drug conjugates (ADCs) for targeted delivery of cytotoxic agents. I will present preclinical data demonstrating how ADCs directed against radiation-inducible tumor antigens potentiate tumor response, offering a precision-based approach to improve outcomes in solid tumors.
We are investigating unique payloads by exploring agents that target cancer cell dependencies/vulnerabilities, or that have known or assumed safety liabilities or poor physicochemical properties that would benefit from delivery via antibodies. We will discuss early achievements in the development of these more targeted ADCs.
Design and Conjugation strategies to enable transformative therapies. How the CysTyr platform enables production of novel targeted combination therapies with greater efficacy and safety
Since the first ADC approval 25 years ago, the MMAE vedotin platform has been the most widely utilized. Over 50 targets have been paired as vedotin ADCs and tested across heme and solid tumors, offering a rare opportunity to leverage insights about ADC target selection. Recent vedotin ADC NSCLC clinical data suggest that targets with unique biology, such as PD-L1 and Integrin Beta-6, are enabling success in a tumor type where other vedotin ADCs have failed.
Developed by a core group of AbTherx scientists and acquired by Gilead Sciences in 2023, Atlas™ Mice are a suite of transgenic mouse technologies for human antibody discovery. AbTherx has worldwide rights to this novel platform, successfully developing technologies that express the full diversity of human antibody HC and K-LC repertoires, enabling the development of bispecific antibodies through a novel binary fixed light chain, and using natural mechanisms to generate long CDRH3 antibodies to address challenging drug targets.
Bio-Rad’s Pioneer™ Antibody Discovery Platform features a vast Fab library (>2 × 10¹¹ sequences), optimized for selection and developability. Using SpyDisplay and the TrailBlazer™ platform, it enables rapid discovery of lead candidates, including GPCR-targeting antibodies with performance comparable to clinical benchmarks. We’ll also present SpyLock, which is a novel approach for fast generation and high-throughput functional screening of bispecific antibodies.
Here we present the development and characterization of OmniUltra transgenic chickens, a novel platform for generating human antibody therapeutics with bovine-inspired ultralong CDRH3. This platform maintains the evolutionary distance advantage of a divergent host species, enabling robust immune responses to mammalian-conserved targets, while utilizing a novel structural format to provide unique paratopes for accessing cryptic epitopes, as well as small autonomous binding units for constructing multispecifics.
This topic explores the revolutionary potential of the genome-edited mouse, where endogenous VH and VL genes are replaced by fully human VH and VL genes in situ, enabling the generation of fully human antibody molecules. When combined with Biointron's AbDrop microfluidic technology-enhanced single B cell screening, this approach allows for the high-throughput and efficient discovery of antibody drug molecules.
Artificial intelligence (AI) is transforming antibody discovery and engineering. Ailux's platform synergistically combines the best of our comprehensive wet lab, AtlaX biologics database, and three proprietary AI engines. We will explore our latest case studies that exemplify our AI-driven approach for tackling challenging targets, identifying unique functional antibodies, and achieving multi-objective optimization. This presentation provides our realistic and evidence-based perspective on the impact of AI on developing next-generation antibody therapeutics.
The Singularity Suite represents a new class of genetically engineered mouse models designed exclusively for single-domain antibody (sdAb) discovery. Each model features a streamlined, minimalist humoral immune system optimized to generate high-diversity, high-fidelity sdAbs with exceptional stability, solubility, and developability. The Singularity Suite encompasses an unprecedented scaffold spectrum including human VH, human Vκ, camelid VHH, shark VNAR, dog VH, cat VH, and mouse VH, enabling broad utility across therapeutic, diagnostic, and animal-health applications. Integrated with high-throughput, sequence-first workflows, these platforms enable rapid generation of potent, developable modular binders against complex targets, and are accessible through flexible licensing and service partnerships.
Each antibody format introduces unique structural and functional variables that can significantly alter Fc effector activity. Assessing therapeutic antibodies on SeromYx’s high-throughput, GCLP-accredited Fc effector function platform enables empirical and format-agnostic profiling of developmental candidates. Our platform has helped uncover critical, early insights into the therapeutic activity and safety of diverse antibody formats, guiding development with data-driven decisions.
Trispecific antibodies (tsAbs) can bind three distinct targets, enabling next-generation approaches in areas like cancer therapy. By engaging multiple tumor-associated antigens, tsAbs can increase tumor specificity, limit antigen escape, and enhance immunostimulatory effects compared to bispecific or monospecific antibodies. We present data on the T-body, a Fab-based, IgG-like trispecific antibody platform with high expression, efficient assembly and good developability characteristics, which accelerates and de-risks development of innovative immunotherapies.
This talk explores how Alloy is redefining T cell engager bispecific antibody discovery through integration of precision affinity design engineering and high throughput functional characterization. By systematically tuning both CD3 and target-arm interactions, we decouple efficacy from cytokine-driven toxicity, resulting in an expanded therapeutic window and enabling safer immune engagement in oncology and autoimmunity. Leveraging a comprehensive, data-rich functional screening workflow, Alloy delivers potent, first-in-class bispecifics tailor built for real-world translational impact.
Standard bioassays often fall short when evaluating immune-modulating biologics due to their complex and diverse MOAs. This presentation explores the use of context-specific in vitro models for T cell engagers in oncology and biologics targeting autoimmune pathways. Through case studies, we highlight how tailored assays, such as T cell activation, cytokine release, and target-specific inhibition, enable robust assessment of drug potency, specificity, and mechanism of action.
Traditional antibody discovery approaches often prioritize single objectives, failing to balance multiple properties simultaneously which yield candidates with compromised developability profiles. We present a selection framework using Pareto optimization across rank-normalized scores with hierarchical property classification. This approach generates balanced candidate shortlists with AI-assisted explanations of property trade-offs, enabling efficient identification of optimal molecules for validation while reducing costly experimental iterations and accelerating therapeutic antibody development.
The rapid expansion of complex biologics—bispecifics, multispecifics, Fc-fusions, has exacerbated the disconnect between early discovery expression systems and manufacturability. The CHO Edge Rapid Pools addresses this developability gap by providing discovery teams with CMC-grade pools and molecule insights early enough to influence lead optimization, architecture selection, and manufacturability assessments.
Antibody engineering is evolving, and Gibson SOLA delivers the synthesis technology to match. This modular enzymatic platform enables rapid, on-demand production of antibody variants using conserved sequences, allowing more candidates per screen and fewer iteration cycles. From scFvs to Fc-fusions, SOLA empowers deeper campaigns, faster decisions, and unique discovery strategies—all at comparable or reduced cost, without outsourcing delays.
Triaging and transitioning a large panel of prospective antibody “hits-to-leads” is de-risked when biology, developability, and manufacturability attribute assessments are integrated by design. ATUM’s services for advancing discovery sequences to a manufacturable biologic with phase appropriate assessments will be outlined. These include AI and in silico screening, high-throughput transient expression for rapid material generation and developability assessment for rank ordering hits. Selected leads are transitioned to an intermediate, higher yield system for high resolution analytics and a manufacturing predictive selection process. Finally, iterative knowledge gained is seamlessly executed in a commercial manufacturing-ready cell line.
Antibodies discovered in vivo have many advantages such as high affinity and low polyspecificity/reactivity with superior developability profiles compared with those identified through in vitro methods. However, immunization-driven approaches have historically faced challenges with complex targets that are evolutionarily conserved. We present a case study in which genetic immunization successfully generated a panel of antibodies against a 100% conserved, multi-subunit, cell-surface heterocomplex, and the epitope diversity was revealed through in silico mapping. This study highlights that breaking tolerance in mice can be effectively achieved and integration of in silico tools facilitate rapid decision making for downstream lead selection.
neoSwitchTM is a yeast strain engineered to toggle between display for antibody library screening and secretion for 5-100 mg/mL VHH/ScFv production. By combining 10⁹-member synthetic or semi-synthetic libraries with turnkey Opentrons FlexTM automation and the Goldilocks LibrariesTM affinity-maturation workflow, it is possible to isolate monomeric VHHs with picomolar binding affinities in weeks.
High-quality therapeutic antibodies aren’t the product of a single experiment, but of a series of cross-validated decisions spanning the entire drug discovery process. In this talk, Mosaic shares practical lessons from running quality-first, fit-for-purpose discovery – programs that blend in vivo and in vitro approaches to deliver candidates that work in the real world. Rather than showcasing a single case study, we’ll walk stage-by-stage through the discovery workflow, and at each stage, we’ll present a short case study: the stubborn problem we hit, what didn’t work, the tactic(s) that did, and a concrete rule of thumb you can reuse to avoid similar roadblocks in the future.
Next-gen immunotherapies demand seamless integration of multimodal data—sequence, structure, assay, and biophysical insights. Traditional tools can’t keep pace. This talk introduces a new paradigm: a Multimodal Scientific Intelligence Platform built to unify antibody/protein workflows, enhance collaboration, and accelerate AI-ready discovery. Includes a case study from a major biopharma showing how multimodal workflows improve outcomes in multispecific antibody engineering.
At NonaBio we are innovating away from simply screening for antibodies based on binding affinities and developing more novel early-stage function-based screening platforms. This presentation highlights examples of function-based screening of VH sequences generated from our fully human heavy chain only HCAb Harbour Mice® discovery platform.
This presentation will explore how Adimab has revolutionized antibody discovery, growing from an innovative startup into a leading platform technology company. We will examine key technological breakthroughs in our platform, focusing on synthetic antibody library evolution, advances in multispecific generation, and novel approaches to developability optimization. Join us to learn how Adimab's engineering-driven approach is shaping the future of therapeutics.
Our fully integrated AbZelectPRO™ platform enables the rapid delivery of stable, high-producing cell lines to support the production of antibodies and more difficult-to-express proteins. The platform combines our AbZelectPRO™ CHO-K1 and AbZelectPRO™-KO GS knockout cell lines together with ProteoNic’s 2G UNic® vector technology and, supported by our comprehensive analytics capabilities, provides a state-of-the-art offering to support our clients as they transition from R&D into preclinical and clinical development.
Traditional antibody discovery approaches often prioritize single objectives, failing to balance multiple properties simultaneously which yield candidates with compromised developability profiles. We present a selection framework using Pareto optimization across rank-normalized scores with hierarchical property classification. This approach generates balanced candidate shortlists with AI-assisted explanations of property trade-offs, enabling efficient identification of optimal molecules for validation while reducing costly experimental iterations and accelerating therapeutic antibody development.
P. fluorescens-based Pfenex Expression Technology® transforms protein production through combinatorial screening to identify robust strains. With >20 years of development and 6 marketed products, Pfenex excels where others fail. Launched in 2024, Pfast™ offers an affordable 10 day evaluation of protein titer and quality. Tested on >30 partner proteins, Pfast significantly improved productivity challenges, improving pipeline management with seamless integration.
SandboxAQ presents structure-free antibody design. Our physics-informed AI achieves 97% enrichment and 80% expression rates , compressing discovery timelines without crystal structures.
R&D progress grinds to a halt anytime scientists lack the supplies they need. This talk shows how smarter lab operations, clear inventory, tighter communication, and connected finance workflows eliminate delays, prevent wasted spend, and keep experiments moving. Learn how modern teams accelerate discovery by replacing chaos with a streamlined, end-to-end operational backbone.
Traditional antibody discovery approaches often prioritize single objectives, failing to balance multiple properties simultaneously which yield candidates with compromised developability profiles. We present a selection framework using Pareto optimization across rank-normalized scores with hierarchical property classification. This approach generates balanced candidate shortlists with AI-assisted explanations of property trade-offs, enabling efficient identification of optimal molecules for validation while reducing costly experimental iterations and accelerating therapeutic antibody development.
Accurate affinity and kinetics data are critical in modern drug discovery, especially as biologics become more specific and tightly binding. Traditional biosensors often fall short, but KinExA offers femtomolar precision and reproducibility. This presentation explores KinExA’s advantages in workflows enhanced by AI-based antibody design, NGS, and novel formats like virus-like particles.
Madelynn Grier, Ph.D., Staff Scientist, Sapidyne Instruments
Gator Bio introduces a next-generation BLI platform delivering high-quality quantitation and kinetic data directly from crude samples, with minimal hands-on time. Learn how labs are accelerating antibody screening, improving reproducibility, and cutting total costs by up to 40% compared to legacy systems. We’ll highlight automation, and showcase new biosensors supporting hybridoma workflows, and high-throughput needs in discovery.
Antibody—drug conjugates (ADC) are biotherapeutics that combine the specificity of monoclonal antibodies (mAbs) with the potency of chemical drug payloads. The mechanism holds particular promise in oncology, as a way to deliver cytotoxic payloads directly to diseased cells while sparing healthy tissue. The hybrid structure of ADC means analytical challenges when studying pharmacokinetics (PK) and immunogenicity.
The Gyrolab® platform is well suited for ADC PK studies since its miniaturized flow-through format can handle a broad range of biological samples (ranging from serum to tissue) with small sample volumes, saving precious sample and expensive reagents. For immunogenicity assays, i.e. detection of anti-drug antibodies (ADA), the Gyrolab assays demonstrate sensitivity in different sample types and high drug tolerance.
We will present a case study to demonstrate how researchers rapidly developed Gyrolab assays to reproducibly measure total Ab and intact ADC in serum from rats dosed with ADC for PK profiling in toxicology studies. The Gyrolab assays run in parallel, successfully measured 1,200 samples within 6 days in unattended mode.
Ailux is a biologics innovation company dedicated to developing advanced biotherapeutics with AI-powered solutions. As XtalPi’s dedicated biologics platform, Ailux integrates proprietary computational models with state-of-the-art wet lab capabilities to tackle previously undruggable targets and design molecules with novel therapeutic profiles. With a global team of more than 100 members, Ailux partners with leading biopharmaceutical companies to translate cutting-edge science into transformative medicines.
DPBIO’s CytoSpark® system enables rapid, high-throughput screening of single plasma B cells for monoclonal antibody discovery. Supporting diverse species including rabbit, mouse, alpaca, and human, CytoSpark® delivers functional screening for challenging targets like membrane proteins and GPCRs. With single-cell precision and functional relevance, it also supports enzyme evolution and synthetic biology, accelerating timelines and expanding the frontier of biologics discovery.
AI/ML discovery demands a high-throughput (HT) antibody production and characterization system with predictable and reliable quality. Twist Bioscience will detail the operational metrics of a next-gen platform built for scale, focusing on turnaround time (TAT) protocols and unmatched, built-for-purpose capacity. Investigate specs for generating AI-Ready Data (sequence confirmation, purity, yield) and rigorous security and privacy measures. This workflow serves as the reliable, scalable engine that validates in silico designs, eliminating the wet-lab bottleneck for biotherapeutic development.
The antibody molecule is a wonder of nature that connects disease targets with immune effector cells via its Y-shaped topology of three domains connected by a hinge region. We describe GEM-DIMER technology allowing us to create superdimers of two antibodies interconnected at their hinge regions by a strong non-covalent interaction. Our superdimers demonstrate cooperative binding to disease targets and immune effector cell receptors, making them ideal for human therapeutic applications.
The efficiency of complement activation among IgG subclasses is primarily determined by their capacity to form oligomers upon binding to antigens. This oligomerization facilitates the multivalent engagement of the C1 complex, thereby initiating the classical complement pathway. These insights offer a mechanistic understanding that could inform the design of antibody therapies with enhanced effector functions.
Antibodies have broad utility in imaging, targeted gene delivery, and disease therapy, and many of these applications require conjugation to secondary molecules. Unfortunately, conventional conjugation approaches are limited by destabilization of structure, heterogeneity, and technically demanding multi-step reactions. To overcome these challenges, we developed a straightforward and highly general platform for site-specific antibody conjugation that blends metabolic glycoengineering with protein design, presenting a highly efficient strategy to produce antibody conjugates.
Neonatal Fc receptor is a popular target for treatment of autoimmune disorders due to its role in maintaining IgG levels. Fc-ABDEG and albumin-binding VHH were combined to develop next-generation FcRn blockers with improved IgG clearence. Step-wise engineering was applied to optimize position and number of VHHs, their affinity to albumin, and the linker connecting it to Fc-ABDEG. Novel FcRn-based cellular assays and human FcRn transgenic mice will also be addressed.
Antibodies targeting human cytomegalovirus (CMV) exhibit limited efficacy due to immune evasion mechanisms, including viral receptors that capture human Fc domains. We engineered Fc variants that retain binding to host receptors but exhibit markedly reduced binding to viral Fc receptors. Antibodies with engineered Fc domains mediated enhanced CD16A activation and limited viral spread in CMV-infected fibroblasts more effectively than wild-type Fc.
Please join your fellow attendees in the exhibit hall for an evening of networking while enjoying beverages and appetizers.
I will discuss SureTACs technology that we developed for targeted degradation of transmembrane proteins, utilizing heterobifunctional antibodies that mediate induced proximity of a transmembrane E3 ubiquitin ligase and the target. Upon tethering E3 to target, the target protein undergoes ubiquitination, endocytosis and lysosomal degradation. I will discuss how we identify optimal E3-target combinations and share proof-of-principle and in vivo efficacy data for PD-L1-targeting SureTACs.
ADCs and eTPD specifically depend on efficient lysosomal trafficking for activity. Here we leveraged the well-characterized low-density lipoprotein receptor (LDLR), and engineered bispecific LDLR-targeting chimeras (LIPTACs), for efficient degradation of extracellular membrane proteins. We further developed degrader–drug conjugates that intentionally hybridize eTPD with ADCs for greater efficiency of drug payload delivery. This platform broadens the therapeutic potential of antibody-based modalities.
Current extracellular targeted protein degradation (eTPD) strategies primarily rely on recycling receptors and lysosomal trafficking for internalization and degradation. Here, we developed bispecific antibodies that recruit membrane-bound proteases to proteins of interest, enabling their “degradation” them via enzymatic shedding. Additionally, the induced proteolysis releases soluble ligands that may influence downstream cellular processes. This approach provides a new mechanism of eTPD and broadens the scope of antibody-based therapeutics.
EpiTACs are bispecific antibodies in which one arm binds a pathogenic target, and the other arm leverage tissue-enriched degrading receptors to selectively degrade a wide range of extracellular targets including membrane, soluble, and multi-span proteins. EpiTACs to multiple oncology and autoimmune targets demonstrate that target degradation drives compelling in vivo activity. EpiTACs can also deliver ADC payloads creating novel therapeutics that combines target degradation with ADC cytotoxicity. The dual mechanism of EpiTAC ADCs leads to anti-tumor activity that outpaces current standard of care molecules.
Influenza viruses rapidly mutate to evade host antibodies, a process known as antigenic drift. Antigenic drift occurs dominantly in the hemagglutinin (HA) head domain as antibodies preferentially target more mutable and accessible head epitopes. The receptor binding site (RBS) of the head domain is broadly conserved, reflecting its essential role in viral entry by binding to terminal sialic acids (SAs). Previous work has shown that the RBS epitope is targeted by antibodies, typically with longer than average CDR3s that serve to mimic SA receptor by occupying the RBS pocket. Whether RBS-targeting antibodies drive antigenic drift in this broadly conserved epitope has not been investigated. We identified mutations in and around the RBS acquired by post-2015 H1N1 viruses: K133aN, N159K, S186P and D190A. We produced recombinant HAs (rHAs) and rescued viruses with single or combinatorial mutations at these sites to elucidate how these residues impact humoral evasion and receptor binding. Our data demonstrate that K133aN, N159K, S186P and D190A evade RBS-specific mAb binding, though differentially across clonal families. This is supported by cryo-EM structures demonstrating two main classes of RBS-specific mAbs directly interacting with K133a, N159, S186, and D190. Interestingly, these clonal families differ in their angle of approach but utilize the same lambda light chain (VL3-21) paired with different heavy chains (VH4-59 and VH4-38-2, respectively). The first class of mAbs (VH4-59/VL3-21) has a paratope only composed of heavy chain contacts. They also possess a long CDR3 loop, which mimics SA binding within the RBS pocket to block receptor binding. The second class of RBS mAbs (VH4-38-2/VL3-21) has a shorter CDR3, interacts with the HA via both chains, and blocks RBS accessibility by binding to contacts in and around the binding pocket. Notably, K133a and D190 are common contacts made by both classes of RBS mAbs. Finally, we ran a panel of rescued viruses and rHAs through biolayer interferometry, glycan array, and modified hemagglutination assays to understand how mutations at positions 133a, 159, 186 and 190 impact receptor binding breadth, affinity, and avidity. We report S186P increases receptor binding breadth and affinity against a2,6 SAs, while D190A significantly restricts this profile and reduces affinity. Together, these data illustrate antigenic drift does occur within the RBS but under the constraints of balancing antibody evasion and receptor binding. These data establish that K133aN, N159K, S186P and D190A are RBS mAb-evading mutations, but also have differential consequences for receptor binding.
The most clinically advanced malaria vaccines and monoclonal antibodies (mAbs) target the circumsporozoite protein (PfCSP) which coats the surface of Plasmodium falciparum sporozoites. However, the diversity of sporozoite surface antigens remains largely uncharacterized. Thus, we developed a novel antigen agnostic, optofluidics-based Beacon assay for screening individual B cells for reactivity towards whole sporozoites and recombinant PfCSP in tandem. Using this approach, we isolated 10 mAbs that bound to sporozoites, but not to any form of recombinant PfCSP. MAD21-101 was the most potent mAb isolated and conferred sterilizing protection against PfWT infection in an in vivo humanized-liver mouse model. Subsequent proteomic analyses and structural studies revealed that the MAD21-101-like mAbs recognize a form of PfCSP that has undergone two sequential parasite-mediated, post-translational modifications at the N-terminus: (I) proteolytic cleavage and (II) subsequent pyroglutamylation to generate an N-terminal pyroglutamate (pGlu) residue. Moreover, the ‘pGluPADGNP’ epitope recognized by this class of mAbs is different from the epitopes of previously isolated anti-CSP mAbs and is absent from WHO-approved vaccines. Thus, pGlu-CSP mAbs are unlikely to interfere with currently deployed vaccines and have a unique pathway to development. Our ongoing work is focused on investigating the utility of pGlu-CSP mAbs in multi-specific strategies, and improving MAD21-101 affinity and potency using in vitro mutagenesis approaches.
Delivering biologics, such as antibodies, to the central nervous system (CNS) is critical for diagnosing and treating numerous neurological diseases. However, systemically administered antibodies do not readily cross the blood-brain barrier (BBB). Previous studies have shown that antibodies targeting the transferrin receptor (TfR) can be efficiently transported across the BBB into the CNS via active transcytosis mechanisms. While TfR antibody shuttles enable rapid CNS uptake and high peak concentrations, they also exhibit relatively fast clearance from the CNS – typically within a week – posing a limitation for therapeutics requiring prolonged CNS exposure. Here, we report that targeting a CNS-exclusive, inert, and abundant extracellular antigen, or “anchor,” provides an effective strategy to enhance both CNS selectivity and antibody retention. Using this approach, our “anchored” TfR-shuttled bispecific antibodies achieved remarkably high peak brain concentrations and maintained sustained presence in the CNS for several months following modest intravenous dosing. To demonstrate the therapeutic potential of this platform, we conjugated anti-inflammatory cytokines to our “anchored” bispecific antibody shuttles. These immunocytokines were efficiently delivered to the CNS and retained full biological activity. Notably, they selectively expanded regulatory T cells (Tregs) within the CNS without affecting peripheral Tregs or effector T cells in either compartment. Furthermore, administration of these immunocytokines reduced disease progression and severity in a relevant neuroinflammation model. Together, these findings validate a broadly applicable strategy for creating long-lived drug depots in the CNS by combining TfR-mediated brain shuttling with CNS “anchoring.”
Breast cancer (BC) is the main type of cancer in woman. The conventional treatment includes chemotherapy, radiotherapy and surgery, however, in recent years immunotherapy has been considered as a novel alternative treatment. In particular, antibody treatment is mainly used as adjuvant for HER2 positive types of BC. To which is necessary to analyze novel potential therapeutic targets as: Syntenin-1, MAGE-A3, PRAME, Plac-1, NY-ESO-1, and Mammaglobin-α that promote metastasis, angiogenesis, chemotherapy resistance, immune response evasion, and other process associated to cancer development. Objective: To evaluate the humoral immuneresponse and systemic toxicity associated to the administration of the mixture of the peptides derived from the tumor associated antigens Syntenin-1, MAGE-A3, PRAME, Plac-1, NY-ESO-1, and Mammaglobin-α in balb/c mice. Material and methods: The peptides were chemically synthetized in a MAP8 format (multiantigenic peptide), and the mixture of the peptides to a final concentration of 30 µg were administrated four times (days: 1, 43, 93 and 142) subcutaneously to Balb/c mice. For humoral immune response, we performed Dot blot and Indirect ELISA. While, systemic toxicity was evaluated by biochemical and hematological blood test and the histological analysis of tissues by H&E staining. Results: We detected the presence of IgG and subclass IgG1, IgG2a and IgG2b in all the immunized mice against all the peptides since the day 60 th to 150 th . We did not observe differences in the hematological and biochemical analysis of the non-inoculated and inoculated mice. Regarding the H&E analysis, we did not observe changes in the architecture of kidneys, heart, liver, and spleen between groups. Conclusion: The peptides derived from the tumoral antigens Syntenin-1, MAGE-A3, PRAME, Plac-1, NY-ESO-1, and Mammaglobin-α are immunogenic without promoting toxicity after their inoculation, and could be useful in the design of novel passive therapies against breast cancer.
The delivery of diverse biologics – including nucleic acids, peptides, proteins and antibodies – into the central nervous system (CNS) via non-invasive methods is of broad interest for therapeutic applications. However, the blood-brain barrier (BBB) poses a major challenge to the use of these biologics due to their limited ability to penetrate the BBB. One promising strategy for delivering biologics into the brain parenchyma is to use a bispecific BBB shuttle, which involves fusing an IgG to a second affinity ligand that engages a cerebrovascular endothelial target and facilitates transport across the BBB. We and others have demonstrated that shuttles targeting transferrin receptor (TfR-1) and CD98hc display unique CNS pharmacokinetic and biodistribution properties, including relatively fast CNS uptake and high maximum CNS concentrations for TfR-1 shuttles and long-lived CNS retention for CD98hc shuttles. Here we have evaluated bispecific antibody shuttles combining IgGs that target different neuronal cell-surface proteins with single-chain antibodies targeting CD98hc and TfR-1. We used quantitative radiotracing to evaluate the pharmacokinetics of neuron-targeted bispecific antibody shuttles and visualize the localization of these shuttles in various CNS regions by immunostaining. Notably, bispecific antibody shuttles targeting neuron cell-surface proteins display significant increase in CNS levels and strong neuronal localization, particularly in the cerebellum and cortex, compared to the non-targeted bispecific antibody shuttles. Finally, conjugation of antisense oligonucleotides to those neuron-targeted bispecific antibody shuttles enabled efficient gene silencing across multiple CNS regions and specific gene modulation in neurons.
The devastating manifestation of Group A Streptococcus (GAS) necrotizing soft tissue infections (NSTIs) is driven by toxin production and exacerbated by the reliance on surgical removal of infected tissue as the only lifesaving treatment. To provide a new treatment option for GAS-NSTIs, we developed human monoclonal antibodies (huMAbs) targeting streptolysin O (SLO), a key pore-forming toxin that drives NSTI progression. Our lead candidates (C11, G4, and L17) show potent in vitro SLO neutralization; however, only L17 offered protection in a murine model of GAS-NSTI. We hypothesize that the driving force for the variance in in vivo efficacy is due to differing mechanisms of SLO inhibition. Using random mutagenesis, site-directed mutagenesis, and Fab fragment generation, we mapped and characterized each huMAb's epitope-specific contribution to SLO neutralization. Our results show that C11 and G4 targeted overlapping linear epitopes near the membrane binding site, while L17 bound to a conformational epitope required for oligomerization. Additionally, L17 Fab fragments retained neutralizing activity, whereas C11 and G4 Fab fragments lost neutralizing activity, suggesting that C11 and G4 rely on the Fc-mediated steric hindrance to block SLO membrane binding. These findings indicate that L17 modulates a unique mechanism of action that is less reliant on full-length antibody, potentially explaining its superior in vivo efficacy. To further test this hypothesis, future work will focus on characterizing the biophysical and pharmacokinetic properties of the huMAbs. Together, these studies identify protective SLO epitopes and huMAb features that will inform the selection and advancement of optimized candidates for clinical development against this devastating disease.
Human coronavirus HKU1 (HCoV-HKU1) infections can cause severe disease in infants, elderly and immunocompromised individuals. HKU1 entry into host cells is facilitated by sequential binding to sialoglycans and transmembrane serine protease 2 (TMPRSS2) receptors. However, the neutralizing capacity of antibodies disrupting these receptor interactions have not been examined. Here, we describe the isolation and characterization of a human monoclonal antibody (mAb) HKU1–2 that recognizes the HCoV-HKU1 spike protein and exhibits dose-dependent neutralization of the virus. High-resolution cryo-electron microscopy (cryo-EM) structure of the spike-Fab complex demonstrated the ability of HKU1–2 to mimic sialic acid binding thereby effectively blocking sialoglycan receptor engagement. Overall, our results demonstrating HKU1-2 recognition and neutralization of HCoV-HKU1, highlights a major step in HKU1 entry process that can be targeted by therapeutics as well as identifies a potential therapeutic candidate for HKU1 viral inhibition.
My group engineers genetic systems that dramatically accelerate the speed of mutation and gene evolution in vivo so that we can drive the rapid evolution of new biomolecular functions and prospectively watch (and systematically manipulate) the course of long gene evolutionary processes on laboratory timescales. I will share recent developments in the use of our continuous evolution system, orthogonal DNA replication system (OrthoRep), to evolve antibodies. I will discuss our efforts to affinity mature antibodies at scale along with the intersection of computational antibody design and evolution, including work focusing on prioritizing sequence space exploration to generate data for training computational models.
We developed a novel functional screening method using hyperphage display platform that allows rapid discovery of potent antiviral single domain antibodies. We benchmarked RASP against established phage ELISA and deep sequencing methods. RASP can be used either as a standalone platform or seamlessly integrated with conventional screening methods to accelerate the discovery of antiviral VHHs.
We present JAM-2, a fully computational antibody design platform that produces VHH-Fc and full-length mAbs with drug-like affinity and developability. Across 16 unseen targets and in under a month, JAM-2 achieved 100% target coverage with double-digit percent bind rates and frequent picomolar to single-digit nanomolar binders from just tens of designs tested. JAM-2 also directly generated GPCR-targeting antibodies in native cellular contexts, delivering lead-quality molecules without post-hoc optimization.
Therapeutic protein engineering has been transformed by the incorporation of big data and AI/ML techniques. An emerging challenge for this field is how to efficiently leverage the right data and the best models to drive meaningful results and resolve long-standing bottlenecks. Amgen has incorporated a generative biology approach to tackle complex engineering problems, aiming to deliver better, more effective molecules across every therapeutic program.
This talk will share updates from the AIntibody competition, a benchmarking initiative engaging the biotech, pharma, academia, and AI communities to use AI and other informatic methods to design or identify developable antibodies with high affinities, from curated NGS datasets. Results will compare the properties of these antibodies with those derived using experimental methods, providing insights into the value of AI in antibody discovery. AIntibody announcement manuscript: Erasmus, M. F. et al. Nat Biotechnol 42, 1637-1642 (2024).
The ion channel Kv1.3 is well known to be important in the activation of effector-memory T cells. We have developed a unique ultralong CDR3 antibody based on the cow scaffold that potently inhibits Kv1.3 activity. Surprisingly, this reagent was also found to inhibit important immune functions in monocytes and macrophages, revealing a novel role for Kv1.3 in the innate immune system.
Inflammation and tissue fibrosis co-exist and are causally linked to organ dysfunction. However, the molecular mechanisms driving immune-fibroblast crosstalk remain unexplored, and there are currently no approved treatments that directly target cardiac fibrosis. Using human tissues and mouse models, we delineate the functions of FAP+ fibroblasts within the heart and define immune cell crosstalk and transcriptional events that govern their differentiation. From a broader perspective, we show that bispecific T-cell engaging antibodies targeting FAP+ fibroblasts suppress cardiac fibrosis and have similar effects in other organs. These findings highlight the therapeutic potential of cell specific targeting of defined fibroblasts subsets.
We have previously demonstrated that an IgG3 agonistic TLR4/MD2 antibody reversed acute murine Type 1 Diabetes (T1D) through induced immune tolerance. To translate this work to humans we developed novel human TLR4 agonistic antibodies, demonstrated that the IgG3 isotype and enhanced multivalency are necessary for their TLR4 signaling, and demonstrated their tolerogenic potential for treating inflammatory diseases.
We leverage our discoveries which show that blockade of innate immune regulatory pathways can halt and even reverse lung fibrosis. We aim to develop novel, multivalent Ab constructs that simultaneously block the activity of these profibrotic pathways.
The inability of diverse biomolecules to readily penetrate the blood-brain barrier is a key limitation to their use in research, diagnostic, and therapeutic applications. We are developing bispecific antibodies that engage either CD98hc or transferrin receptor, and efficiently transport biomolecules into the CNS. We will discuss our recent work on protein delivery to the CNS, including cytokines for modulating the immune environment in the brain for therapeutic applications.
Natriuretic peptide receptor 1 (NPR1) is a membrane-bound guanylate cyclase and activated by atrial (ANP) and brain (BNP) natriuretic peptide and NPR1 agonism alters blood pressure via regulation of intravascular volume, vasorelaxation, natriuresis and diuresis. We have isolated fully human antibodies from VelocImmune® mice that either agonize or antagonize NPR1 activity and are developing as potential treatment of cardiac diseases such as heart failure and hypovolemic/hypotensive disorders.
Degeneration of retinal neurons in mammals leads to irreversible vision loss. We discovered that Prox1, a homeobox protein, is transferred from neurons to Müller glia (MG) to suppress regeneration. Blocking this transfer with our Anti-PROX1 therapy reactivates MG’s regenerative potential. This approach successfully delayed vision loss in disease model mice, offering a promising strategy to treat retinal degenerative conditions by restoring the intrinsic repair capacity of the mammalian retina.
Monoclonal antibodies have recently been shown to prevent malaria in clinical trials in endemic regions, but challenges remain regarding antibody cost, potency, and specificity. Here, we describe the discovery of next-generation antibodies that target the malaria parasite, Plasmodium falciparum, as part of efforts to develop new anti-malarial vaccines and prophylactics.
Respiratory syncytial virus (RSV) causes a substantial respiratory disease burden in older adults. Three vaccines, each based on a prefusion-stabilized RSV F antigen, have now been licensed. Here, we delineate the humoral response elicited by Moderna’s RSV mRNA vaccine, characterizing antibody responses at both the polyclonal serum and single-B-cell levels.
We have identified B cells with anti-checkpoint specificity in a subset of pre-surgical, untreated lung cancer patients. Upon single cell sorting, sequencing and reconstruction of specific BCRs, we show that these are mostly peripheral memory B cells, encoding antibodies with highly mutated CDRs, and can exhibit checkpoint blocking activity.
TfR1 shuttles show promise for CNS therapeutics, but toxicities remain limiting. We introduce a high-throughput in vivo screening method to engineer novel brain shuttles. Powered by AI and Manifold's protein barcoding technology, our approach reveals novel shuttle targets and shuttles with enhanced tissue selectivity, reduced toxicity profiles, and optimized biodistribution.
Immune organoids model key features of human adaptive immunity, including antigen-specific antibody responses. Immune organoids are derived from lymphoid tissues and recapitulate the diversity of human immune responses. This talk will discuss the utility of the organoid model for investigating host and antigen format factors that influence the magnitude and quality of the antibody response.
As a critical step towards uncovering the extent and functional consequences of germline-encoded variation in adaptive immune receptor genes, we developed an ultra-high throughput multiplexed sequencing technique, ImmuneDiscover. This approach allows individualized immunoglobulin (IG) genotyping from nanogram quantities of genomic DNA and multiplexing >1,000 individuals in a single analysis. We benchmarked the approach on 90 donors from different population groups and subsequently genotyped 2,486 cases from the Thousand Genomes Project (1KGP) collection, creating an atlas of human IG gene variation, KIARVA. All alleles were validated against existing SNP databases from >million individuals using IgSNPer. We found extensive population differences in IG genes known to be important in pathogen responses, including a homozygous multigene IGHD segment deletion present in up to 30% of East Asian individuals. In addition, we show evidence of disease responsive haplotypic differences in human population groups, suggesting localized selection pressures, and illuminate ongoing genomic processes that function to maintain IGH locus heterogeneity.
PRO-XTENTM masked T cell engagers (TCEs) are conditionally active by exploiting the dysregulated protease activity in tumors. Preclinically, PRO-XTENTM TCEs demonstrated 1) Strong masking of in vitro cytotoxicity by approximately 4 logs; 2) Potent in vivo efficacy at doses similar to the efficacious doses of unmasked TCE controls; and 3) Increased MTDs in NHP by greater than >100 fold. Clinical trials of PRO-XTEN TCEs targeting HER2, PSMA and EGFR are currently ongoing.
This presentation will cover the discovery and engineering of XmAb942, a potential best in class high-affinity anti-TL1A monoclonal antibody with extended half-life, and a first-in-class bispecific antibody targeting TL1A and IL-23p19. Both candidates are designed for therapeutic use in Ulcerative Colitis and Crohn’s Disease.
Maxion have shown that small cysteine-rich peptides (“knottins”) with ion-channel modulating activity can be inserted into antibody CDR loops while retaining their function. The resulting “KnotBody molecules modulate ion channel activity while benefitting from the optimal drug-like properties of antibodies. This presentation will illustrate the generation and optimisation of KnotBody inhibitors of Kv1.3, an important ion channel affecting function of T effector memory cells.
We present discovery of a novel IgE cleaving protease engineered using our proprietary machine learning enabled IMPACT platform to obtain desired target specificity, potent cleavage, and efficacy in preclinical models with favorable manufacturability properties, low immunogenicity, pharmacokinetics, and pharmacodynamics. IgE cleavers offer a new potential targeted therapy for allergic and atopic diseases.
Therapeutics in inflammatory indications often are limited in their efficacy. Blockade of multiple pathways by targeting multiple cytokines with a single agent is a way to enhance efficacy and benefit to patients. We describe the engineering of trispecific antibodies with high-affinity neutralization of three cytokines simultaneously. Design factors to be discussed include domain arrangement, strategies for driving correct chain pairing, and optimization for expression, stability and developability.
We present methods to keep the sequences of therapeutic antibody candidates as close as possible to the germline, for example by affinity maturation without any point mutagenesis.
Surface display of intact antibodies in mammalian cells engineered with somatic hypermutation machinery replicates key aspects of the adaptive immune system allowing affinity maturation via “natural” mutations in frameworks and insertions/deletions in CDRs. Human germline sequences from low affinity naïve human antibodies contain natural hotspots near key residues involved in low affinity interactions and the platform can convert these residues to higher affinity alternatives with better developability.
We evaluated the biophysical properties of 400 human B cell-derived mAbs using high-throughput screening assays. Overall, mAbs derivedfrom memory B cells and long-lived plasma cells (LLPCs) display reduced levels of polyreactivity, hydrophobicity, and thermal stability compared with naive B cell-derived mAbs. Somatic hypermutation (SHM) is inversely associated with all three biophysical properties. The developability profiles of the human B cell-derived mAbs are comparable with those observed for clinical mAbs
The tripartite beta-lactamase assay (TPBLA) developed in our laboratory allows the aggregation propensity of a peptide or protein to be quantified in vivo. Aggregation propensity is linked to a simple phenotypic read-out (bacterial resistance to b-lactam antibiotics) by grafting the protein/peptide of interest into an unstructured loop in beta-lactamase which is inactivated upon aggregation of the grafted sequence. In addition, the TPBLA can be used as a screen for directed evolution of problematic sequences and, when combined with next generation sequencing can provide insight into the mechanism of aggregation for disease-causing and therapeutic proteins.
Antibody discovery and lead selection require a careful analysis of affinity, epitope, specificity, and cross-reactivity. A-Alpha Bio’s AlphaSeq platform can measure these properties simultaneously for an entire antibody library by reprogramming yeast agglutination
with a next generation sequencing readout. In his talk, David will introduce the AlphaSeq platform along with specific use cases for biologics development.
To address the therapeutic limitations of both PD-1 and PD-L1 blockade, we have developed novel, fully human antibodies which block binding of both PD-ligands to PD-1, as well as of PD-L1 to
B7-1. The in vitro efficacy of these therapeutics equals or exceeds that of PD-1 blockade; however, when armed with effector function in vivo, these antibodies can regress both PD-1 sensitive “hot” and PD-1 resistant “cold” syngeneic tumors.
To address the therapeutic limitations of both PD-1 and PD-L1 blockade, we have developed novel, fully human antibodies which block binding of both PD-ligands to PD-1, as well as of PD-L1 to
B7-1. The in vitro efficacy of these therapeutics equals or exceeds that of PD-1 blockade; however, when armed with effector function in vivo, these antibodies can regress both PD-1 sensitive “hot” and PD-1 resistant “cold” syngeneic tumors.
Transforming growth factor-beta (TGFβ) signaling in solid tumors has recently been associated with primary resistance to checkpoint inhibition therapy. SRK-181 is a fully human antibody that selectively binds latent TGFβ1 and inhibits its activation. Our data demonstrate that inhibiting the TGFβ1 isoform with SRK-181 is sufficient to overcome primary resistance to anti-PD-1 in syngeneic mouse tumor models and has an improved safety profile compared to broad TGFβ inhibition.
Memo Therapeutics current pipeline features two antiviral antibody programs, one for the prevention of BK virus-associated nephritis in kidney transplant recipients and the other for the prevention of SARS-CoV-2 virus progression in patients at high risk for a severe course of COVID-19. Antibody discovery for both programs was performed using our microfluidic single-cell-based technology platform Dropzylla®. Dropzylla® expresses recombinant antibody repertoires of millions of memory B cells allowing the identification of virus-specific monoclonal antibodies in three weeks.
Pulmonary Arterial Hypertension (PAH) is a rare but fatal disease. Current treatments increase life expectancy through vasodilation but have limited impact on the progressive pulmonary vascular remodelling that drives PAH. Osteoprotegerin (OPG) is increased in patients with idiopathic PAH and stimulates pulmonary vascular remodelling. Treatment with a human antibody targeting OPG attenuates pulmonary vascular remodelling associated multiple rodent models of PAH in the presence of standard of care vasodilator therapy. Targeting OPG with a therapeutic antibody is a potential treatment strategy in PAH.
Phagocytosis plays important roles both in homeostasis and under pathological condition. MerTK is a member of TAM receptor tyrosine kinase. Two stories will be presented by blocking or activating MerTK mediated phagocytosis. 1) Antibody blockade of MerTK prevents apoptotic cell clearance by macrophages, MerTK blockade increases tumor immunogenicity and enhances anti PDL1/PD1 therapy. 2) Unlike Fc receptor mediated phagocytosis, MerTK mediated phagocytic clearance is immunologically silent. We will describe a bi-specific antibody approach to harness MerTK for targeted clearance without inducing proinflammatory cytokine release associated with Fcreceptor engagement.
REGN4018 binds both MUC16 on tumor cells and CD3 on T cells. REGN4018 inhibited growth of human tumors in a xenogenic model and syngeneic models. Immuno-PET imaging demonstrated localization of REGN4018 in MUC16-expressing tumors as well as in T cell-rich organs. Toxicology studies in cynomolgus monkeys showed minimal and transient increases in serum cytokines and C-reactive protein following REGN4018 administration with no overt toxicity.
Bispecific antibody-mediated co-engagement of T cells with tumor antigens is now a validated therapeutic strategy. We have engineered modular Fc-containing bispecifics by coupling a robust and portable single-chain CD3 domain with full-length antibodies against promising cancer targets, and have also extended this Fc platform to generate multiple checkpoint inhibiting bispecifics and cytokine-Fc fusions. I will present case studies of several such bispecifics entering clinical development.
Bispecific antibodies are coming of age as therapeutics with two currently marketed and 100+ more bispecifics in clinical development. This presentation will focus on addressing challenges that may assist in the development of some bispecific antibodies. Firstly, intrinsic antibody heavy/light chain pairing preference were investigated and then used to facilitate the efficient production of bispecific IgG in single host cells. Secondly, a mutational strategy was devised to mitigate high viscosity of some monospecific and bispecific antibodies that may facilitate subcutaneous delivery.
AvibodiesTM comprise unique surface disulphides for precise loading of drug payloads (auristatins, maytansinoids) with superior tumor xenograft regression compared to conventional IgGs (targeting CD30). PK of Tag-72 targeted diabodies has been demonstrated in a first-in-man Phase 1 clinical biodistribution trial. With TagWorks NV2, Avibodies were shown to pre-target and upload tumors with the ADC-drug subsequently released by a systemic activator. In summary, Avipep’s novel AvibodyTM designsenable precise site-specific loading of drug and isotope payloads for cancer imaging and ADC therapy.
To enhance the selectivity of monoclonal antibodies for tumors over healthy tissues, we have developed an antibody masking system that utilizes coiled-coil peptide domains to sterically impede antigen binding. On exposure to tumor-associated proteases the coiled-coil domains can be cleaved and antibody function restored. The coiledcoil domain is a generalizable approach for antibody masking that results in antibody therapeutics with improved circulation half-lives, minimized systemic effects, and improved tumor targeting.
Antikor are addressing challenges of treating solid tumours with their innovative next-generation ‘miniaturized’ Antibody Drug Conjugates (ADC) called Fragment Drug Conjugates (FDCs). FDCs offer benefits due to their effective penetration, more-rapid delivery of high amounts of cytotoxic payload and fast clearance from normal tissues, resulting in better tolerability and therapeutic index. We’ll present data showing how the combination of antibody engineering and linker-payload design can be used to tailor the PK and tolerability properties of FDCs. Antikor has part-licenced its first product, an anti-HER2 FDC to development partner, Essex Biotechnology and Antikor’s exciting new flagship FDC product will be presented with compelling efficacy, tolerability and CMC data.
Adoptive transfer of genetically modified immune cells holds great promise for cancer immunotherapy. We have developed a widely adaptable technology to barcode and track targeted integrations of large non-viral DNA templates and applied it to perform pooled knockin screens in primary human T cells. Pooled knockin of dozens of unique barcoded templates into the T cell receptor (TCR)-locus revealed gene constructs that enhanced fitness in vitro and in vivo. We further developed pooled knockin sequencing (PoKI-seq), combining singlecell transcriptome analysis and pooled knockin screening to measure cell abundance and cell state ex vivo and in vivo, allowing for the accelerated discovery of next generation cell therapies.
Cytokines transmit critical environmental information into cells to mediate immune functions, and thus have great therapeutic potential, both to stimulate as well as to suppress the immune response for targeted disease treatment. However, the multifarious activities and unfavorable pharmaceutical properties of natural cytokines have limited their clinical performance. Here we describe new computational and experimental protein design technologies that are advancing the clinical translation of effective cytokine therapies.
To identify novel immunotherapy strategies we comprehensively profiled the expression programs and clonality of tumor infiltrating T-cells from 26 glioma patients using full-length single cell RNA sequencing. Using this methodology, we found a novel target expressed in subsets of tumor infiltrating T-cells, as well as NK cells. Functional genomics experiments validated the target’s role as an inhibitory immune checkpoint and prompted a comprehensive therapeutic antibody discovery effort that yielded multiple leads with favorable characteristics and potent pharmacology across both T- and NK-cell functional assays.
Emerging data point to a critical role for Fc-effector function across infectious diseases. These functions range from target pathogen opsinophagocytic clearance, infected cell cytotoxicity, pathogen mucin-trapping, to simple pathogen-growth arrest. Here, we developed a systems biology inspired Fc-engineering platform to generate Fc-libraries on any Fab of interest. Coupling any Fab to 80 distinct Fc domains, generates a library of Fc-variants to screen for Fab/Fc domains of greatest clinically benefit.
Antibody effector functions are often undesired for therapeutic antibodies when only antigen binding or neutralization would be ideal. By switching the native glycosylation site from position 297 to 298, we created alternative antibody glycosylation variants as a novel strategy to eliminate the effector functions. The lead mutant called “NNAS” (N297/S298N/T299A/Y300S) with the engineered glycosylation site at Asn298 shows no detectable binding to all mouse or human FcγRs by SPR analyses. The effector functions of the mutant are completely eliminated when measured in antibody-dependent cellular cytotoxicity (ADCC) and complementdependent cytotoxicity (CDC) assays. Structural study confirmed the successful glycosylation switch to the engineered Asn298 site
would cause a clash of N-glycans with FcγRs, resulting in loss of binding. In addition, the NNAS mutants of multiple antibodies retain binding to antigens and FcRn, exhibit comparable purification yields and thermal stability, and display normal circulation half-life in mice and non-human primate. Our work provides a novel approach for generating therapeutic antibodies devoid of any effector function with potentially lower immunogenicity.
ProbodyTM therapeutics are antibody prodrugs designed to remain predominantly inactive in the circulation until they are proteolytically activated in the tumor microenvironment, thereby widening the therapeutic index. Probody technology can be applied to multiple therapeutic modalities. Examples will be presented, including probodies based on checkpoint inhibitors, antibody drug conjugates, and T cell-engaging bispecifics.
IgG antibodies must be modified with an asparagine-linked (N-) glycan to bind Fc receptors and stimulate a cytotoxic response. It was known that altering the glycan composition impacted affinity, though it was unclear how. We determined that the IgG1 Fc N-glycans sample multiple conformations, and specific antibody features provide additional interactions that stabilize and preorganize the receptor-binding interface for optimal affinity.
This presentation will review the rapid progress that investigators have made isolating very potent human monoclonal antibodies for SARS-CoV-2 from the B cells of survivors and deploying them to the clinic.
