ACR Meeting Abstracts

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Abstracts tagged "B-Cell Targets"

  • 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: 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: 0035 • ACR Convergence 2025

    Clinical and Transcriptomic Heterogeneity in Patients With RA: A Multi-Centric International Study of Anti-TNF Response

    Maryna Borshchivska1, Thibault Helleputte1, Laurent Meric de Bellefon2, Silvana di Romana3, Elsa Vieira-Sousa4, Vasco Romão4, João Eurico Fonseca5, Alla Ishchenko6, Patrick Verschueren6, Ruth Wittoek7, Peggy jacques7, Dirk Elewaut8, Bernard Lauwerys9 and Patrick Durez10, 1DNAlytics, Louvain-la-Neuve, Belgium, 2Cliniques Universitaires Saint-Luc – Université catholique de Louvain (UCLouvain) – Institut de Recherche Expérimentale et Clinique (IREC), Rheumatologie, Brussels, Belgium, 3Department of Rheumatology, Saint Pierre University Hospital, Brussels, Belgium, 4Faculdade Medicina, Universidade de Lisboa, ULS Santa Maria, Centro Académico Medicina de Lisboa, Lisboa, Portugal, 5Faculdade Medicina, Universidade de Lisboa, ULS Santa Maria, Centro Académico Medicina de Lisboa, Lisboa, Lisboa, Portugal, 6Rheumatology, University Hospital Leuven and Skeletal Biology and Engineering Research Centre, KU Leuven, Leuven, Belgium, 7VIB Center for Inflammation Research, Ghent University and Department of Rheumatology, Ghent University Hospital, Ghent, Belgium, 8VIB Center for Inflammation Research, and Ghent University Hospital, Department of Rheumatology, Ghent, Belgium, 9Systemic and Inflammatory Rheumatic Diseases Section, Institute of Experimental and Clinical Research (IREC), UCLouvain, Brussels, Belgium, 10Cliniques Universitaires Saint-Luc – Université catholique de Louvain (UCLouvain) – Institut de Recherche Expérimentale et Clinique (IREC), Rheumatologie, Brussels, Brussels Hoofdstedelijk Gewest, Belgium

    Background/Purpose: Rheumatoid arthritis (RA) is a chronic inflammatory disease that can lead to joint damage and disability. Although methotrexate is the standard first-line treatment, about…
  • Abstract Number: 0905 • ACR Convergence 2025

    Development and Characterization of IAR130, a 2+1 Format, CD19 and BCMA Dual Targeting T Cell Engager for Autoimmune Diseases

    Jinyang Li, Xiu Han, Yi Wang, Yiyi Li, Zhaoru Ma, Yang Li, Zhimin Zhang, Liu Li, Meng Ni, Jiangkun Bi, Xing Yang, Yao Xiong, Shuaixiang Zhou and Huizhong Xiong, Innovent Biologics (Suzhou) Co., Ltd., Suzhou, Jiangsu, China (People's Republic)

    Background/Purpose: Immune reset, achieved through profound and sustained depletion of B cells and/or plasma cells, has demonstrated significant clinical efficacy in patients with severe and…
  • Abstract Number: 1189 • ACR Convergence 2025

    Clinical Outcomes and Response to SARS-Cov-2 Infection and Vaccination in Ianalumab‑Treated Patients with Autoimmune Diseases

    Valerie Devauchelle1, Swati Ghanshani2, CAROLE SIPS3, Rainer Hillenbrand3, Carol Lau4, Wolfgang Hueber5, Claire Bonal3 and Stephen Oliver6, 1UBO, Brest, France, 2Novartis Healthcare Private Limited, Hyderabad, India, Hyderabad, India, 3Novartis Pharma AG, Basel, Switzerland, Basel, Switzerland, 4Novartis Pharmaceuticals Corporation, East Hanover, 5Novartis Pharmaceuticals, Basel, Switzerland, 6Novartis Pharma AG, Basel, Switzerland

    Background/Purpose: Ianalumab, a glycoengineered IgG1 mAb directed against B cell-activating factor (BAFF)-receptor (BAFF-R), targets B cells and their functions via dual mechanism: depletion of B…
  • Abstract Number: 1838 • ACR Convergence 2025

    Differential Expression Of Activation Markers On dsDNA-reactive B-cells Between Healthy Subjects And SLE Patients Reveals Unconventional Extrafollicular Activation In SLE

    Lars Van Vliet, Annemarie Dorjée, René Toes and Jolien Suurmond, Leiden University Medical Center, Leiden, Netherlands

    Background/Purpose: Anti-dsDNA IgG antibodies are a hallmark of systemic lupus erythematosus (SLE), an autoimmune disease characterized by chronic inflammation and multi-organ damage. Evidence suggests that…
  • Abstract Number: 2577 • ACR Convergence 2025

    Duration of SARS-CoV-2 Viral Shedding After Acute Infection in Patients with Rheumatic Diseases Using B Cell Depletion or Tumor Necrosis Factor Inhibitors

    Liya Sisay Getachew1, Xiaosong Wang2, Zachary Wallace3, Naomi Patel4, Lauren O'Keeffe5, Madison Negron6, Grace Qian5, Alene Saavedra5, Kevin Mueller5, Natalie Davis7, Yijia Li8, Manish Choudhary5, Julie Boucau3, Brooke Leeman5, Gregory Edelstein5, Owen Glover3, Yumeko Kawano5, Rinki Deo5, Caitlin Marino3, Zahra Reynolds3, Karry Su3, Chase Mandell3, Eliza Passell3, Mamadou Barry3, Andrew Alexandrescu3, Dibya Ghimire3, Mriganka Mandal9, Tammy Vyas3, Sarah Hammond3, Jatin Vyas3, Jacob Lemieux3, Mark Siedner3, Amy Barczak3, Jonathan Li3 and Jeffrey Sparks1, 1Brigham and Women's Hospital, Boston, MA, 2Brigham and Women's Hospital, Natick, MA, 3Massachusetts General Hospital, Boston, 4Massachusetts General Hospital, Boston, MA, 5Brigham and Women's Hospital, Boston, 6Harvard Extension School, Medford, MA, 7Brigham and Women's Hospital, Brookline, MA, 8University of Pittsburgh, Pittsburgh, 9Dana-Farber Cancer Institute, Boston

    Background/Purpose: People with rheumatic diseases are at risk for acute and post-acute COVID-19 outcomes in part due to immunosuppressive medications. Those on B-cell depleting therapies…
  • Abstract Number: 0124 • ACR Convergence 2025

    Single-cell atlas reveals the central-and-peripheral immune remodeling mechanism and clinical benefits of talitacicept therapy in patients with primary antiphospholipid syndrome

    Haoyu Pan1, Shiyan Gu1, Xiaohan Wei2, Yuying Fan1, Jinyi Qian1, Shuyi Yu1 and Hui Shi3, 1Department of Rheumatology and Immunology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China, Shanghai, Shanghai, China (People's Republic), 2Shanghai JiaoTong University, Shanghai, China (People's Republic), 3Shanghai Jiaotong University Affiliated Ruijin Hospital, Shanghai, China (People's Republic)

    Background/Purpose: To elucidate the molecular and cellular mechanisms underlying Talitacicept therapy in primary antiphospholipid syndrome (PAPS) patients using integrated single-cell RNA and TCR/BCR profiling of…
  • Abstract Number: 0906 • ACR Convergence 2025

    Preclinical Characterization of IBI3034, an TACI and BCMA Chimeric Fc Fusion Protein, that Potently Modulates B Lymphocytes and Serum Immunoglobulin for the Treatment of B cell Related Autoimmune Disease

    Yao Xiong, Shuaixiang Zhou, Zhimin Zhang, Bin Li, Zhihao Ming, Yuyu Wu, Liu Li, Chang Li, Fenggen Fu, Zhihai Wu, Shun Wang, Guogang Yuan, Yuling Song, Jinyang Li, Huizhong Xiong and Bingliang Chen, Innovent Biologics (Suzhou) Co., Ltd., Suzhou, Jiangsu, China (People's Republic)

    Background/Purpose: Dysregulated B-cell activation plays a pivotal role in the pathogenesis of various autoimmune diseases. B-cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL) are…
  • Abstract Number: 1198 • ACR Convergence 2025

    Induction of stable, GC-free remission in patients with severe, therapy-refractory anti-synthetase syndrome after using the bispecific CD19xCD3 T cell engager blinatumomab

    Christina Duesing1, Ayla Nadja Stuetz2, Andrea-Hermina Györfi3, Laura-Marie Lahu4, Franca Sophie Deicher5, Gamal Chehab6, Jutta Richter7, Marie Celine van Saan8, Bilgesu Safak Tümerdem2, Alexandru-Emil Matei9, Bjoern Buehring10, Ricardo Grieshaber-Bouyer11, Melanie Hagen12, Georg Schett13, Wolfgang Merkt14 and Jörg Distler15, 1Klinik für Rheumatologie, Düsseldorf, Germany, 2Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University, Düsseldorf, Nordrhein-Westfalen, Germany, 3Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University., Düsseldorf, Germany, 4Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University, Düsseldorf, Germany, 5Uniklinik Düsseldorf, Düsseldorf, Germany, 6Policlinic of Rheumatology and Hiller Research Unit Rheumatology, Heinrich-Heine-University, Düsseldorf, Germany, 7Clinic for Rheumatology and Hiller Research Unit, Heinrich-Heine-University Duesseldorf, Medical Faculty, Duesseldorf, Germany, Düsseldorf, Germany, 8Department of Rheumatology, University Hospital Duesseldorf, Medical Faculty of Heinrich Heine University, Duesseldorf, 9Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, and Fraunhofer Cluster of Excellence for Immune Mediated Diseases CIMD, Frankfurt am Main, Germany, Düsseldorf, Germany, 10Bergisches Rheuma-Zentrum, Wuppertal, Germany, 11University Hospital Erlangen, Erlangen, Germany, 12Friedrich-Alexander-University Erlangen-Nuremberg, Department of Internal Medicine 3 - Rheumatology and Immunology, Erlangen, Germany, 13Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, 14University Hospital Düsseldorf, Düsseldorf, Germany, 15University Hospital Duesseldorf and HHU, Duesseldorf, Germany

    Background/Purpose: Treatment of anti-synthetase syndrome (ASyS) presents clinical challenges: myositis can lead to permanent disability and severe organ involvement is life-threatening.Methods: We treated three patients…
  • Abstract Number: 2019 • ACR Convergence 2025

    Incidence of Coronavirus Disease 2019 in Participants with IgG4-Related Disease Treated with Inebilizumab in the MITIGATE Study

    Arezou Khosroshahi1, Emma Culver2, Wen Zhang3, Kazuichi Okazaki4, Yoshiya Tanaka5, Matthias Lohr6, nicolas schleinitz7, Xinxin Dong8, Sue Cheng8, Daniel Cimbora8 and John Stone9, 1Emory University, Atlanta, GA, 2John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, 3Peking Union Medical College Hospital, Dong Cheng Qu, China (People's Republic), 4Kansai Medical University Kori Hospital, Osaka, Japan, 5University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, 6Karolinska Institutet, Stockholm, Sweden, 7Aix Marseille university, AP-HM, Marseille, France, 8Amgen, Thousand Oaks, CA, 9Massachusetts General Hospital , Harvard Medical School, Concord, MA

    Background/Purpose: The potential of B-cell-depleting therapies to diminish humoral responses is recognized, but whether this leads to an increased risk of Coronavirus Disease 2019 (COVID-19)…
  • Abstract Number: 2641 • ACR Convergence 2025

    Cizutamig, a BCMA T-cell engager: preclinical to clinical translation of design optimization for the treatment of autoimmune diseases

    Ricardo Grieshaber-Bouyer1, Jamie Haddon2, Maria Gabriella Raimondo3, Carlo Tur3, Sebastian Böltz3, Tobias Dashi4, Melanie Hagen5, Andreas Wirsching3, Tobias Rathe4, Xuan Wu6, Peter Wung2, Francis Kim2, Yonghong Zhu6, Ken Song2, Timothy Lu7 and Georg Schett8, 1University Hospital Erlangen, Erlangen, Germany, 2Candid Therapeutics, San Diego, CA, 3Department of Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, 4Department of Internal Medicine 3- Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, 5Friedrich-Alexander-University Erlangen-Nuremberg, Department of Internal Medicine 3 - Rheumatology and Immunology, Erlangen, Germany, 6EpimAb Biotherapeutics, Shanghai, China (People's Republic), 7Candid Therapeutics, San Diego, 8Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany

    Background/Purpose: Emerging data show the potential of T-cell engagers (TCEs) for deep B cell depletion to treat autoimmune diseases. Cizutamig is a purposefully designed BCMAxCD3…
  • Abstract Number: 0135 • ACR Convergence 2025

    Rituximab in Antiphospholipid Syndrome: aPL Titer Decline and Clinical Outcomes

    Omer Uludag1, Soner Altın2, Gamze Kemec2, yasemin yalcinkaya3, Ahmet Gul3, Murat Inanc3 and Bahar Artim Esen4, 1Istanbul University, Istanbul Faculty of Medicine, Division of Rheumatology, Istanbul, Turkey, 2Istanbul University, Istanbul Faculty of Medicine, Department of Internal Medicine, Istanbul, Turkey, 3Istanbul University, Istanbul Faculty of Medicine, Division of Rheumatology, Istanbul, Istanbul, Turkey, 4Istanbul University, Istanbul, Istanbul, Turkey

    Background/Purpose: Rituximab treatment has been shown to be effective in non-thrombotic manifestations of APS and refractory catastrophic APS (CAPS). However, there are conflicting results regarding…
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All abstracts accepted to PRYSM are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 6:00 PM CT on March 18. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

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