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: 0002 • ACR Convergence 2025
KITE-363: An Autologous Anti-CD19/CD20 CAR-T Product for the Treatment of Autoimmune Rheumatic Diseases
Brian Kim, Christine Lowe, Francisco Flores, Jeremy Margaitis, Alessandro Calo, Stacey Valny, Anna Konecny, Eva Jaghatspanyan, Sean Yoder, Kenneth Ertel, Simone Filosto, Jodi Murakami and David Barrett, Kite, a Gilead Company, Santa Monica, CA
Background/Purpose: B-cell dysregulation is a key factor in the development and progression of autoimmune diseases, and B-cell inhibition has been a cornerstone of treatment for…
Abstract Number: 0239 • ACR Convergence 2025
Safety of Rilzabrutinib, a BTK Inhibitor, in Adult Patients with IgG4-related disease (IgG4-RD) in a 52-week Phase 2 Open-label Study
Alireza Meysami¹, Mollie Carruthers², John Stone³, Fernando Martinez-Valle⁴, nicolas schleinitz⁵, Daniela Ghetie⁶, Robert Spiera⁷, Jeea Choi⁸, Leda Mannent⁹ and Owen Hagino⁸, ¹Henry Ford Health, Detroit, MI, ²Vancouver General Hospital, Vancouver, BC, Canada, ³Massachusetts General Hospital , Harvard Medical School, Concord, MA, ⁴Vall d’Hebron Hospital, Barcelona, Spain, ⁵Aix Marseille university, AP-HM, Marseille, France, ⁶Oregon Health and Science University, Portland, OR, ⁷Scleroderma, Vasculitis, and Myositis Center, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, ⁸Sanofi, Morristown, NJ, ⁹Sanofi, Gentilly, France
Background/Purpose: IgG4- related disease (IgG4-RD) is a chronic, progressive, immune-mediated fibrotic disease with limited treatment options. Rilzabrutinib is an orally available, reversible, inhibitor of Bruton's…
Abstract Number: 0910 • ACR Convergence 2025
Development of Four Distinct Human IgG4-Producing Mouse Models Recapitulating IgG4-Related Disease
MIN GANG KIM¹, JINA YEO², HEA RIM KANG³, JAE HYUN MOON³, Seon Uk Kim⁴, SeoYoon Ban⁵, MI HYEON KIM⁶ and Eun Young Lee⁷, ¹Seoul National University College of Medicine, Seoul, Republic of Korea, ²Division of Rheumatology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea, ³Seoul National University College of Medicine, Jongno-gu, Seoul, Republic of Korea, ⁴Seoul National University, Jongno-gu, Seoul, Republic of Korea, ⁵Department of Cancer biology, Graduate School of College of Medicine, Seoul National University, Korea, Seoul, Republic of Korea, ⁶Hallym university dongtan sacred heart hospital, Seocho-gu, Seoul, Republic of Korea, ⁷Seoul National University College of Medicine, Seoul, South Korea
Background/Purpose: IgG4-related disease (IgG4RD) is an immune-mediated fibroinflammatory condition characterized by multi-organ involvement, elevated serum IgG4, and IgG4-positive plasma cell infiltrates that form tumor-like lesions…
Abstract Number: 1529 • ACR Convergence 2025
Updated Phase 1 Trial Data Assessing the Tolerability, Efficacy, Pharmacokinetics, and Pharmacodynamics of BMS-986353 (CC-97540), a CD19-directed Chimeric Antigen Receptor T Cell Therapy Using a Next-Generation Process for Severe, Refractory SLE
Georg Schett¹, David Simon², Margrit Wiesendanger³, Anca Askanase⁴, Vikas Majithia⁵, Neil Kramer⁶, Jacques Morel⁷, Philip J. Mease⁸, Ellen De Langhe⁹, Amit Saxena¹⁰, dominique Farge¹¹, Alain Lescoat¹², Alisha Desai¹³, Griff McTume¹⁴, Whitney Handy¹⁴, Sharmila Das¹³, Jerill Thorpe¹⁴, Alexis Melton¹⁴, Ashley Koegel¹⁴ and Emily Littlejohn¹⁵, ¹Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ²Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany; Deutsches Rheuma-Forschungszentrum Berlin, Berlin, Germany, Berlin, Germany, ³Icahn School of Medicine at Mount Sinai, New York, NY, ⁴Columbia University Medical Center, New York, NY, ⁵Mayo Clinic Hospital, Jacksonville, FL, ⁶Overlook Medical Center; Atlantic Medical Group, Atlantic Health System, Summit, NJ, ⁷CHU and University of Montpellier, Montpellier, France, ⁸Department of Rheumatology, Providence-Swedish Medical Center and University of Washington, Seattle, WA, ⁹University Hospitals Leuven, Leuven, Belgium, ¹⁰Division of Rheumatology, Department of Medicine, NYU Grossman School of Medicine, New York, NY, ¹¹Hôpital Saint-Louis, Paris, France, ¹²CHU Rennes University Hospital, Rennes, France, ¹³Bristol Myers Squibb, Princeton, NJ, ¹⁴Bristol Myers Squibb, Princeton, ¹⁵Cleveland Clinic, Cleveland, OH
Background/Purpose: BMS-986353 (CC-97540; CD19 NEX-T) is a CD19-directed chimeric antigen receptor (CAR) T cell therapy that expresses the same CAR as lisocabtagene maraleucel (liso-cel); it…
Abstract Number: 2425 • ACR Convergence 2025
Neutrophil Transcriptomics in SLE: Exploring Intrinsic, Ex Vivo Adaptation, and CAR-T Cell Therapy-Induced Changes
Ehsan Dehdashtian¹, Stefania Gallucci², Guangnan Hu³, Dominic Borie⁴ and Roberto Caricchio⁵, ¹UMass Chan Medical School, Worcester, MA, ²Temple University School of Medicine, Worcester, MA, ³UMass Chan School of Medicine, Worcester, MA, ⁴Kyverna Therapeutics, Emeryville, CA, ⁵University of Massachusetts Chan Medical School, Worcester, MA
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by dysregulation of the adaptive and innate immune systems. Neutrophils, key players in innate immunity,…
Abstract Number: 2695 • ACR Convergence 2025
B-cell depletion and lymphoid follicle disruption upon different B-cell depleting agents
Carlo Tur¹, Markus Eckstein², Laura Bucci¹, Janina Auth³, Christina Bergmann¹, Simon Rauber⁴, Melanie Hagen¹, Danae-Mona Nöthling¹, Sebastian Böltz¹, Andreas Wirsching¹, Filippo Fagni⁵, Giulia Corte⁶, Panagiotis Garantziotis¹, Jule Taubmann⁷, jochen wacker¹, Andreas Ramming⁸, Maria Antonietta D'Agostino⁹, Arndt Hartmann¹⁰, Fabian Müller¹¹, Andreas Mackensen¹², Ricardo Grieshaber-Bouyer¹³, Georg Schett¹⁴, Aline Bozec¹ and Maria Gabriella Raimondo¹, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²Institute of Pathology and Comprehensive Cancer Center EMN, Friedrich-Alexander- Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ³Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Bayern, Germany, ⁵Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Bayern, Germany, ⁶- Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ⁷Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁸Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany, ⁹Division of Rheumatology and Clinical Immunology - Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹⁰Institute of Pathology and Comprehensive Cancer Center EMN, Friedrich-Alexander- Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ¹¹University Hospital of Erlangen, Erlangen, Germany, ¹²Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Germany, ¹³University Hospital Erlangen, Erlangen, Germany, ¹⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany
Background/Purpose: Advanced protein-based therapies targeting B-cells, including glycoengineered CD20 monoclonal antibody obinutuzumab (OBI) and the CD19/CD3 T-cell engager blinatumumab (BLI), show promise for managing severe…
Abstract Number: 0003 • ACR Convergence 2025
In Vivo Generation of anti-CD19 CAR T Cells Utilizing Circular RNA Encapsulated in Targeted Lipid Nanoparticles
Xiaoyu Pan¹, Xiaoning Wang¹, Zhihao Chen¹, Xiaowen Zou¹, Siqi Li¹, Jian Ye¹, Fei Lin¹, Yang He¹, Edo Kon², Peng Zhu¹, Mengyun Chen¹ and Weiyi Zhang¹, ¹RiboX Therapeutics, Shanghai, China (People's Republic), ²RiboX Therapeutics, Cambridge, MA
Background/Purpose: Chimeric Antigen Receptor (CAR) T-cell therapy has revolutionized cancer treatment and shown promise in addressing autoimmune diseases. However, current ex vivo CAR T-cell therapies…
Abstract Number: 0262 • ACR Convergence 2025
Preclinical Characterization of ABB071 – a Humanized anti-CD180 Antibody that Modulates Multiple Pro-inflammatory Immune Pathways for the Treatment of Autoimmune and Inflammatory Disorders
Margaret McDaniel, Brenda Stevens, Socheath Khim, Alan Wahl, Che-Leung Law and Edward Clark, Abacus Bioscience, Seattle, WA
Background/Purpose: CD180 is a Toll-like receptor (TLR) homolog expressed on antigen-presenting cells (APCs): B cells, dendritic cells, monocytes, and macrophages. While the extracellular domain of…
Abstract Number: 0912 • ACR Convergence 2025
CD11c⁺CD21⁻ Autoimmune-Associated B Cells Derived from Double-Negative IgD⁻CD27⁻ Subsets Exhibit Enhanced IFNLR1 Expression in Systemic Lupus Erythematosus
Roukaya Yaakoubi, Diana Alzamareh, Alexander William Bae and Jennifer Barnas, university of rochester, rochester, NY

Background/Purpose: Autoimmune-associated B cells (ABCs) are increasingly recognized for their role in the pathogenesis of systemic lupus erythematosus (SLE), yet their developmental origins and specific…
Abstract Number: 1532 • ACR Convergence 2025
Preliminary Safety, Efficacy, and Cellular Kinetics of CTA313, a CD19/BCMA Dual-Targeted Universal CAR-T Therapy, for Active Systemic Lupus Erythematosus
Hanwei Wang¹, Yue Xie², Guojiao Yang³, Lu Han³, Jiangtao Ren⁴, Yali Zhou⁴, Wengang Ge³, Jan Davidson-Moncada⁴ and Huan Zhou⁵, ¹The Third People’s Hospital of Bengbu, Beng bu, China (People's Republic), ²Bioheng Therapeutics Limited, Nan Jing Shi, China (People's Republic), ³Bioheng Therapeutics Co., Limited, Nanjing, China (People's Republic), ⁴Bioheng Therapeutics Co., Limited, Nan Jing, China (People's Republic), ⁵Clinical Research Hospital of the First Affiliated Hospital of Anhui Medical University, Hefei, China (People's Republic)
Background/Purpose: SLE is characterized by B cell activation, autoantibody production and autoreactivity. Recently, CAR-T therapy has emerged as a promising strategy to deplete autoreactive B…
Abstract Number: 2442 • ACR Convergence 2025
Reduction in Extrafollicular B Cell Responses in SLE Patients after CAR T Cell Therapy
Danae-Mona Nöthling¹, Kirill Anoshkin¹, Panagiotis Garantziotis¹, Laura Bucci¹, Tobias Rothe², Jule Taubmann³, Futoshi Iwata¹, Melanie Hagen¹, Andreas Wirsching¹, Simon Völkl⁴, Fabian Müller⁵, Aline Bozec¹, Andreas Mackensen⁶, Georg Schett⁷ and Ricardo Grieshaber-Bouyer⁸, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlagen, Germany, ³Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁴Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁵University Hospital of Erlangen, Erlangen, Germany, ⁶Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Germany, ⁷Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ⁸University Hospital Erlangen, Erlangen, Germany
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by aberrant B cell activation and autoantibody production. CD19-targeted chimeric antigen receptor (CAR) T-cell therapy induces a short,…

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