Abstracts tagged "B-Cell Targets"

Abstract Number: LB18 • ACR Convergence 2025
Transcriptomic Signatures of ANA+ and ANA- B Cells Reveal Shifts from Active Disease to Remission in Systemic Lupus Erythematosus
Rita Pozovskiy¹, Yemil Atisha-Fregoso² and Betty Diamond³, ¹Zucker School of Medicine, New York, New York, ²Feinstein Institutes for Medical Research, New York, New York, ³The Feinstein Institutes for Medical Research, Manhasset, New York
Background/Purpose: In systemic lupus erythematosus (SLE), IgG antibodies that target nuclear antigens (ANA) are pathogenic and part of the diagnostic criteria for SLE. Healthy individuals…
Abstract Number: LB04 • ACR Convergence 2025
Anti-CD20/BCMA Bispecific CAR-T Cell Therapy Promotes Immune Reset and Sustained Drug Free Remission in Refractory Autoimmune Diseases
Huihua Ding¹, Wensi Li², Yiwen Shen³, Chunyan Zhang⁴, Yan Ye³, Ran Wang³, Shaoying Yang³, Chunmei Wu³, Dai Dai³, Chengxiao Zheng², Yuan Qian², Xiaobing Luo⁵, Thule Trinh⁵, Judy Zhu², Jiaqi Huang⁵, Yong Hao³, Xiaoying Yao³, Zhenfen Ling⁶, Yihong Yao⁵ and Nan Shen¹, ¹Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, ²Shanghai AbelZeta Ltd., Shanghai, China (People's Republic), ³Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China (People's Republic), ⁴Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, China, ⁵AbelZeta Inc., Rockville, ⁶Shanghai General Hospital, Shanghai, China (People's Republic)
Background/Purpose: Refractory autoimmune diseases with progressive organ damage remain a major unmet medical need. C-CAR168 is an autologous anti-CD20/BCMA bispecific CAR-T therapy designed to simultaneously…
Abstract Number: LB13 • ACR Convergence 2025
Obinutuzumab Leads to Deep B-Cell Depletion in the Kidney Parenchyma of Patients With Lupus Nephritis: An Exploratory Analysis of the REGENCY Trial
Brad Rovin¹, Elsa Martins², Cary Austin³, Harini Raghu³, Caleb Chan³, Patrick Chang³, Jay Garg³, Valeria Alberton⁴, Mittermayer Santiago⁵, Gustavo Aroca-Martínez⁶, Fedra Palazuelos⁷, Teresa Baczkowska⁸, José Alfaro⁹, Jorge Ravelo-Hernández¹⁰, Richard Furie¹¹, Luís Pinto¹², Eduardo Albiero¹³, Christopher Larsen¹⁴, Bongin Yoo³, Jennifer Pulley¹⁵, Andrew Thorley³, Thomas Schindler², Theodore Omachi³, William Pendergraft III³ and Ana Malvar¹⁶, ¹Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, ²F. Hoffmann-La Roche Ltd, Basel, Switzerland, ³Genentech, Inc., South San Francisco, California, ⁴Pathology Unit, Fernández Hospital, Buenos Aires, Argentina, ⁵Bahiana School of Medicine and Public Health and UFBA, Federal University of Bahia, and Clínica SER da Bahia, Salvador, Brazil, ⁶Universidad Simón Bolívar y Clínica de la Costa, Barranquilla, Colombia, ⁷Centro de Investigación y Tratamiento Reumatológico S.C., Mexico City, Mexico, ⁸Department of Transplantation Medicine, Nephrology and Internal Medicine, Medical University of Warsaw, Warsaw, Poland, ⁹Instituto Peruano del Hueso y la Articulación, Lima, Peru, ¹⁰Clinica San Juan Bautista, Unidad de Investigacion en Reumatologia e Inmunologia, Lima, Peru, ¹¹Division of Rheumatology, Northwell Health, Great Neck, New York, ¹²Internal Medicine and Rheumatology, Hospital Pablo Tobón Uribe, Medellín, Colombia, ¹³Sanatorio Allende, Córdoba, Argentina, ¹⁴Arkana Laboratories, Little Rock, Arkansas, ¹⁵Roche Products Ltd, Welwyn Garden City, United Kingdom, ¹⁶Organización Médica de Investigación, Buenos Aires, Argentina
Background/Purpose: B cells infiltrate the kidneys in lupus nephritis (LN) and likely contribute to the pathogenesis of kidney injury. The REGENCY trial (NCT04221477) showed that…
Abstract Number: LB14 • ACR Convergence 2025
Promising Early Outcomes With BMS-986353, a CD19-directed Chimeric Antigen Receptor T Cell Therapy in Severe Refractory Idiopathic Inflammatory Myopathies: Safety and Efficacy Findings From the Ongoing Phase 1 Trial
Rohit Aggarwal¹, David Korman², Margrit Wiesendanger³, Vikas Majithia⁴, Ellen De Langhe⁵, Marc Schmalzing⁶, Melissa Griffith⁷, Philipp Koehler⁸, Joanna Schiller⁸, Dimitrios Mougiakakos⁹, Mohamad Cherry¹⁰, Richard Nash¹¹, Jacques Azzi¹², Ernesto Ayala⁴, Peter Vandenberghe⁵, Max Topp⁶, Jonathan Gutman⁷, Eugen Feist¹³, Alisha Desai¹⁴, Alexis Melton¹⁴, Alice Wozniak¹⁴, San-San Ou¹⁴, Melissa Harnois¹⁴, Jerill Thorpe¹⁴, Praneeth Jarugula¹⁴, Takafumi Ide¹⁴, Ashley Koegel¹⁴ and Neil Kramer¹⁵, ¹University of Pittsburgh, Pittsburgh, Pennsylvania, ²Mountain Rheumatology, HCA HealthONE, Denver, Colorado, ³Icahn School of Medicine at Mount Sinai, New York, New York, ⁴Mayo Clinic Hospital, Jacksonville, Florida, ⁵University Hospitals Leuven, Leuven, Belgium, ⁶University Hospital Würzburg, Würzburg, Germany, ⁷University of Colorado Anschutz Medical Campus, Aurora, Colorado, ⁸University of Cologne, Faculty of Medicine and University Hospital Cologne, Department I of Internal Medicine, Division of Clinical Immunology and Center for Integrated Oncology (CIO) Aachen Bonn Cologne Duesseldorf, Cologne, Germany, ⁹University Hospital Magdeburg, Magdeburg, Germany, ¹⁰Atlantic Health System, Morristown, New Jersey, ¹¹HealthOne Cares and Colorado Blood Cancer Institute, Denver, Colorado, ¹²Icahn School of Medicine at Mount Sinai Hospital, New York, New York, ¹³Helios Vogelsang-Gommern Specialist Clinic, Gommern, Germany, ¹⁴Bristol Myers Squibb, Princeton, New Jersey, ¹⁵Overlook Medical Center and Atlantic Medical Group, Atlantic Health System, Morristown, New Jersey
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) are systemic autoimmune diseases affecting muscles, skin, lungs, joints, and several other organs; many patients are refractory to available therapy,…
Abstract Number: 0008 • ACR Convergence 2025
Characterization of S-1117, a novel pan-IgG protease engineered for reduced immunogenicity using the IMPACT platform
Julia Manasson¹, Liliana Sanmarco², Alex Pellerin², Maria Cecilia Ramello², Agustin Plasencia², Jordan Anderson², Tobias Green², Andita Newton², Ryan Peckner², Yi Xing², Heather Vital³, Nathan Higginson-Scott², John Sundy⁴, Kevin L. Otipoby² and Ivan Mascanfroni², ¹Seismic Therapeutic, New York, NY, ²Seismic Therapeutic, Watertown, MA, ³Seismic Therapeutic, Lexington, MA, ⁴Seismic Therapeutic, Durham, NC
Background/Purpose: Pathogenic autoantibodies are key effectors of inflammation, promoting tissue damage in autoantibody-mediated diseases such as inflammatory myopathies, lupus nephritis, Sjogren’s syndrome, antiphospholipid syndrome, and…
Abstract Number: 0804 • ACR Convergence 2025
Comparative Risk of All-Cause Mortality with Belimumab versus Oral Immunosuppressant Use in Patients with Non-Renal Systemic Lupus Erythematosus
Grace Haeun Lee¹, Sara Barmettler², Lingxiao Zhang³ and April Jorge², ¹Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital, Boston, MA, ³Massachusetts General Hospital, Boston
Background/Purpose: Belimumab is a monoclonal antibody targeting B-lymphocyte stimulator (BLyS) used in the treatment of active systemic lupus erythematosus (SLE). Our objective was to investigate…
Abstract Number: 0943 • ACR Convergence 2025
Type I and Type II IFNs have both independent and overlapping effects on SLE disease severity
Haylee Cosgrove¹, Xiaoyan Gong¹, Aidan Matunis¹ and Jeremy Tilstra², ¹University of Pittsburgh, Pittsburgh, ²University of Pittsburgh, Pittsburgh, PA
Background/Purpose: The pathogenesis of systemic lupus erythematosus (SLE) is thought to be strongly influenced by the interferon (IFN) signaling pathway, particularly type I IFNs (IFNα/β).…
Abstract Number: 1578 • ACR Convergence 2025
Use of the CD19/CD3 T cell engager blinatumomab in refractory diffuse systemic sclerosis : a case series
Marc Scherlinger¹, Yannick dieudonne², Anna Molto³, Emmanuel Chatelus⁴, aurelien Guffroy⁵, Thierry Martin², Jacques-eric GOTTENBERG⁶, Celestine Simand⁷, Anne El Aatmani⁸, Justine Decroocq⁹, Eden Sebbag¹, Jean Sibilia¹⁰ and Jérôme AVOUAC¹¹, ¹Rheumatology Department, National Center for Rare autoimmune disease RESO,Strasbourg University Hospital, Strasbourg, France, ²Immunology Department, National Center for Rare autoimmune disease RESO,Strasbourg University Hospital, Strasbourg, France, ³Assistance Publique Hôpitauxde Paris, Paris, France, ⁴Department of Rheumatology, University Hospital Strasbourg, France, Strasbourg, France, ⁵CHU de Strasbourg, Strasbourg, ⁶Hautepierre Hospital, STRASBOURG, Alsace, France, ⁷ICANS, Strasbourg, France, ⁸CHU de Strasbourg, Strasbourg, France, ⁹APHP, Paris, France, ¹⁰Rheumatology Department, National Center for Rare autoimmune disease RESO,Strasbourg University Hospital, Strasbourg, Alsace, France, ¹¹Rheumatology department, Cochin hospital, Paris, France
Background/Purpose: Systemic sclerosis (SSc) is a severe autoimmune disease with limited treatments. While anti-CD19 CAR T-cell therapy shows promise, its use is limited by cost…
Abstract Number: 2458 • ACR Convergence 2025
Obecabtagene autoleucel (obe-cel), a CD19-targeting Autologous Chimeric Antigen Receptor T-cell Therapy (CAR T) with a fast off-rate binding domain, in Patients (pts) with Severe, Refractory Systemic Lupus Erythematosus (srSLE): Preliminary Results from the Phase I CARLYSLE Study
Maria Leandro¹, Ruth Pepper², Ben Parker³, Eleni Tholouli⁴, David Jayne⁵, Ben Uttenthal⁶, Josefina Cortés-Hernández⁷, Pere Barba⁷, José Andrés Román Ivorra⁸, Yanqing Hu⁹, Wolfram Brugger¹⁰, Silvia Basilico¹¹, Davide Germano¹¹ and Claire Roddie¹, ¹University College London and University College London Hospital, London, United Kingdom, ²University College London, University College London Hospital and Royal Free Hospital NHS Trust, London, United Kingdom, ³NIHR Manchester CRF, Manchester Royal Infirmary, Manchester, United Kingdom, ⁴Manchester Royal Infirmary, Manchester, United Kingdom, ⁵University of Cambridge, Cambridge, United Kingdom, ⁶Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom, ⁷Hospital Universitari Vall d’Hebron-Universitat Autónoma de Barcelona, Barcelona, Spain, ⁸Hospital Universitari i Politècnic La Fe, Valencia, Spain, ⁹Autolus Therapeutics, Rockville, MD, ¹⁰Autolus Therapeutics, Munich, Germany, ¹¹Autolus Therapeutics, Basel, Switzerland
Background/Purpose: Pts with srSLE have limited remaining treatment options and represent a population with an unmet need. CD19 CAR Ts have potential for deep depletion…
Abstract Number: 0009 • ACR Convergence 2025
MRT-6160, a VAV1-Directed Molecular Glue Degrader, Attenuates T and B Cell Effector Functions and Inhibits Disease Progression in a Spontaneous MRL-Faslpr Mouse Model
Adam Cartwright¹, Lucas Gyger¹, Foram Desai², Shailee Vora², Anna Kostikova¹, Xudong Wang², Peter Trenh², Katie May², Sophia Nguyen², Chris King², Daniel Lam², Xavi Lucas¹, Mary Zlotosch², Elisa Liardo¹, Daric Wible², Ilaria Lamberto², Bradley Demarco², Debora Bonenfant¹, Sharon Townson², Eswar Krishnan², Filip Janku², John Castle¹, Laura McAllister¹, Alison Paterson² and Marisa Peluso², ¹Monte Rosa Therapeutics, Basel, Switzerland, ²Monte Rosa Therapeutics, Boston, MA
Background/Purpose: VAV1, an immune cell restricted guanine nucleotide exchange factor (GEF) and scaffolding protein, plays a critical role in mediating T- and B-cell receptor activity.…
Abstract Number: 0843 • ACR Convergence 2025
Efficacy and Safety of BMS-986353, a CD19-Directed Chimeric Antigen Receptor T Cell Therapy Manufactured Using a Next-Generation Process: Updated Data From a Phase 1 Trial in Patients With Systemic Sclerosis
Dinesh Khanna¹, David Korman², Elana Bernstein³, Neil Kramer⁴, Vikas Majithia⁵, Philip J. Mease⁶, Georg Schett⁷, Jacques Azzi⁸, Richard Nash⁹, Ran Reshef³, Mohammad Cherry¹⁰, Ernesto Ayala⁵, Matthew Schwede¹¹, Monalisa Ghosh¹², Fabian Müller¹³, Alisha Desai¹⁴, San-San Ou¹⁵, Sharmila Das¹⁴, Jerill Thorpe¹⁶, Melissa Harnois¹⁴, Alexis Melton¹⁶, Ashley Koegel¹⁶ and Margrit Wiesendanger⁸, ¹University of Michigan, Ann Arbor, MI, ²Mountain Rheumatology, Denver, CO, ³Columbia University Irving Medical Center, New York, NY, ⁴Overlook Medical Center; Atlantic Medical Group, Atlantic Health System, Summit, NJ, ⁵Mayo Clinic Hospital, Jacksonville, FL, ⁶Department of Rheumatology, Providence-Swedish Medical Center and University of Washington, Seattle, WA, ⁷Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ⁸Icahn School of Medicine at Mount Sinai, New York, NY, ⁹Health One Cares, Denver, CO, ¹⁰Atlantic Health System, Morristown, NJ, ¹¹Swedish Cancer Institute, Seattle, WA, ¹²C. S. Mott Children's Hospital University of Michigan Health, Ann Arbor, MI, ¹³University Hospital of Erlangen, Erlangen, Germany, ¹⁴Bristol Myers Squibb, Princeton, NJ, ¹⁵Bristol Myers Squibb, Seattle, WA, ¹⁶Bristol Myers Squibb, Princeton
Background/Purpose: BMS-986353 (CC-97540) is an investigational CD19-directed T-cell therapy expressing the chimeric antigen receptor (CAR) used in globally-approved lisocabtagene maraleucel; it is manufactured via the…
Abstract Number: 0946 • ACR Convergence 2025
A Novel Preclinical Tool for Evaluating CD20 Antibody Efficacy Based on BAFF/CD20 Dual-target Humanized Mice
Juan Liang¹ and Ting Wang², ¹Gempharmatech, Nanjing, Jiangsu, China, ²GemPharmatech, Nanjing, China (People's Republic)
Background/Purpose: CD20, a well characterized B-cell surface marker involved in B-cell activation and differentiation, plays a critical role in the pathogenesis of B-cell mediated diseases…
Abstract Number: 1593 • ACR Convergence 2025
Comparison of rituximab induction and maintenance regimens in ANCA-associated vasculitis: PK/PD modelling approach in real-world patients
Blaise Pasquiers¹, Benoit Blanchet², Xavier Puéchal³, Xavier Declèves¹, Pascal Cohen⁴, Claire Goulvestre¹, Marion Casadevall¹, Ines Benhabiles¹, Michel Vidal¹, David Ternant¹, Benjamin Terrier⁵ and Alicja Puszkiel⁶, ¹Hopital Cochin, Paris, France, ²National Referral Centre for Rare Autoimmune and Systemic Diseases, Hôpital Cochin, Paris, France, ³Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Hospital Cochin, and Université Paris Cité, Paris ( ⁷⁵⁰¹⁴ ), Ile-de-France, France, ⁴Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Hospital Cochin, Paris, France, ⁵Cochin Hospital, Paris, France, ⁶Cochin Hospital, Paris
Background/Purpose: For the treatment of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), rituximab (RTX) may be given as a 4-dose regimen (375 mg/m2 weekly for 4…
Abstract Number: 2463 • ACR Convergence 2025
Allogenic anti- CD19 CAR-T cells induce remission in refractory systemic lupus erythematosus
Chunnei Yang¹, Chuanyin Sun², Binghe Tan³, Chao Hu¹, Liyan Wan², Changling Xie³, Qian Tan³, Mingyao Liu³, Jin Lin², Bing Du³ and Hongyan Tong¹, ¹Department of Hematology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (People's Republic), ²Department of Rheumatology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China (People's Republic), ³BRL Medicine Inc., Shanghai, Shanghai, China (People's Republic)
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease associated with significant morbidity and mortality. The treatment approach for SLE primarily involves immunomodulation and…
Abstract Number: 0010 • ACR Convergence 2025
XmAb657, a CD19 x CD3 T-Cell Engaging Bispecific Antibody for Autoimmune Disease
Matthew Bernett¹, Gregory Moore², Katrina Bykova², Viralkumar Davra², Seung Chu², Michael Sheard², Ruschelle Love², Norman Barlow², Engie Salama², Jitendra Kanodia², Panida Lertkiatmongkol², Dipankar Chaudhuri², Kendra Avery², Hanh Nguyen², Rumana Rashid², Ke Liu², Jing Qi², Araz Eivazi², Thuy Truong², Sher Karki², James Ernst², Rena Bahjat² and John Desjarlais², ¹Xencor, Inc., Pasadena, CA, ²Xencor, Inc., Pasadena
Background/Purpose: B cell depletion is a validated therapeutic strategy in autoimmune disease, but current approaches targeting CD20 may only partially eliminate disease-driving subsets such as…

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