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: 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: 1563 • ACR Convergence 2025
RESET-SSc: Clinical Trial Evaluating Rese-cel (Resecabtagene Autoleucel), A Fully Human, Autologous 4-1BB CD19-CAR T Cell Therapy in Systemic Sclerosis
Dinesh Khanna¹, Monalisa Ghosh¹, Ankoor Shah², Sonali Bracken³, george georges⁴, Carrie Richardson⁵, Pei-Suen Tsou¹, Charles Ross⁶, Carleigh Zahn¹, Courtney Little⁷, Carl diCasoli⁷, Mikaela Raymond⁷, Adreeja GuhaRay⁷, Jenell Volkov⁷, Daniel Nunez⁷, Thomas Furmanak⁷, Jason Stadanlick⁷, Larissa Ishikawa⁷, Zachary Vorndran⁷, Alexandra Ellis⁷, Jazmean Williams⁷, Steve Flanagan⁷, Quynh Lam⁸, Domenick Braccia⁸, Fatemeh Hadi-Nezhad⁸, Raj Tummala⁸, Samik Basu⁷ and David Chang⁹, ¹University of Michigan, Ann Arbor, MI, ²Duke University, Durham, NC, ³Duke University Medical Center, Durham, NC, USA, Apex, NC, ⁴Northwestern Medicine, Evanston, IL, ⁵Northwestern University, Chicago, IL, ⁶University of Michigan, Ann Arbor, ⁷Cabaletta Bio, Philadelphia, PA, ⁸Cabaletta Bio, Philadelphia, ⁹Cabaletta Bio, Bryn Mawr, PA
Background/Purpose: The treatment goals for systemic sclerosis (SSc) are to control disease activity, limit progression of organ damage and decrease long-term morbidity and mortality. Therapies…
Abstract Number: 0914 • ACR Convergence 2025
Preclinical Expansion of Autoreactive Naive B cells Drives RA onset in ACPA+ individuals
Xiaohao Wu¹, Mengrui Zhang², Orr Sharpe³, V. Michael Holers⁴, Jane Buckner⁵, Gary Firestein⁵, Eddie James⁶, Kevin Deane⁷ and William H. Robinson⁸, ¹Stanford Uniersity, Stanford, ²Stanford University, Stanford, CA, ³Stanford University, Stanford, ⁴University of Colorado Anschutz Medical Campus, Aurora, ⁵Benaroya Research Institute, Seattle, ⁶Benaroya Research Institute, Benaroya Research Institute, ⁷University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁸Stanford University, Palo Alto, CA
Background/Purpose: The cellular and molecular mechanisms underlying the progression from anti-citrullinated protein antibody (ACPA) positivity to clinical rheumatoid arthritis (RA) remain poorly understood. Defining these…
Abstract Number: 0279 • ACR Convergence 2025
Assessment of Baseline IgG4-RD Disease Characteristics and Impact Upon Safety and Efficacy of Inebilizumab: Results from the MITIGATE Study
Yoshiya Tanaka¹, Emma Culver², Arezou Khosroshahi³, Wen Zhang⁴, Kazuichi Okazaki⁵, Matthias Lohr⁶, nicolas schleinitz⁷, Xinxin Dong⁸, melissa rosen⁹, Sue Cheng⁸, Daniel Cimbora⁸ and John Stone¹⁰, ¹University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ²John Radcliffe Hospital; University of Oxford, Oxford, United Kingdom, ³Emory University, Atlanta, GA, ⁴Peking Union Medical College Hospital, Dong Cheng Qu, China (People's Republic), ⁵Kansai Medical University Kori Hospital, Osaka, Japan, ⁶Karolinska Institutet, Stockholm, Sweden, ⁷Aix Marseille university, AP-HM, Marseille, France, ⁸Amgen, Thousand Oaks, CA, ⁹Amgen Inc., Thousand Oaks, CA, ¹⁰Massachusetts General Hospital , Harvard Medical School, Concord, MA
Background/Purpose: IgG4-related disease (IgG4-RD) is a progressive, systemic, fibroinflammatory disease characterized by unpredictable and recurring flares, leading to organ damage and decreased quality of life.…
Abstract Number: 0006 • ACR Convergence 2025
QEL-005: CD19 CAR-Regulatory T cell therapy, a novel approach for the treatment of complex immune mediated inflammatory diseases including Rheumatoid Arthritis and Systemic Sclerosis
Jenny McGovern, Georgios Eleftheriadis, Thomas Grothier, Eva Bugallo Blanco, Anna Koi, Mahsa Nemani, Cameron Allum, Emily Hurley, Daniela Penston, Marc Martinez-Llordella, Luke Devey and Nathalie Belmonte, Quell Therapeutics, London, United Kingdom
Background/Purpose: Rheumatoid Arthritis (RA) and Systemic Sclerosis (SSc) are immune mediated inflammatory diseases (IMID) where a complex interplay of tissue and immune cell activation drives…
Abstract Number: 2448 • ACR Convergence 2025
Rituximab as the first line treatment in newly diagnosed systemic lupus erythematosus
Haiting Wang¹, Liling Zhao², Shuang Ye³ and Shaoying Yang², ¹Renji Hospital, Rockville, MD, ²Renji hospital, Shanghai, China (People's Republic), ³Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China, Shanghai, Shanghai, China (People's Republic)
Background/Purpose: Rituximab (RTX) has been commonly used for the treatment of patients with severe or refractory systemic lupus erythematosus (SLE), yet real-world data concerning RTX…
Abstract Number: 1537 • ACR Convergence 2025
Local Immune effector Cell-Associated Toxicity Syndrome (LICATS) in CAR T-cell treated patients with Autoimmune Disease
Melanie Hagen¹, Fabian Müller², Andreas Wirsching¹, Soraya Kharboutli³, Silvia Spoerl³, Christina Duesing⁴, Tobias Krickau⁵, Markus Metzler⁵, Simon Völkl³, Michael Aigner³, Sascha Kretschmann³, Ingrid Vasova³, Marc Saake⁵, Stefan Schliep⁵, Torsten Kubacki⁶, Nicolas Hunzelmann⁶, Laura Bucci¹, Jule Taubmann⁷, Christina Bergmann¹, Andrea-Hermina Györfi⁸, Sascha Dietrich⁹, Jörg Distler¹⁰, Ricardo Grieshaber-Bouyer¹¹, Andreas Mackensen¹² and Georg Schett¹³, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²University Hospital of Erlangen, Erlangen, Germany, ³Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁴Klinik für Rheumatologie, Düsseldorf, Germany, ⁵Friedrich-Alexander-Universität Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany, ⁶University and University Hospital Cologne, Cologne, Germany, Cologne, Germany, ⁷Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁸Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University., Düsseldorf, Germany, ⁹Heinrich Heine University Duesseldorf, University Hospital Duesseldorf, Duesseldorf, Germany, ¹⁰University Hospital Duesseldorf and HHU, Duesseldorf, Germany, ¹¹University Hospital Erlangen, Erlangen, Germany, ¹²Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Germany, ¹³Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany
Background/Purpose: CD19-targeting chimeric antigen receptor (CAR) T-cell therapy has revolutionized treatment strategies for severe B-cell driven autoimmune diseases (AID) like Systemic Lupus erythematosus (SLE), Systemic…
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 Yaakoub, Diana Alzamareh, Alexander Bae William 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: 0263 • ACR Convergence 2025
A Multicenter Retrospective Case Series of Patients with Susac Syndrome treated with Rituximab
Michelle Benjamin¹, Mattia Wruble Clark², Shamik Bhattacharyya³, Audra Horomanski¹ and Kristin Galetta⁴, ¹Stanford University, Palo Alto, CA, ²Mass General Brigham, Somerville, MA, ³Brigham and Women's Hospital, Malden, MA, ⁴Stanford Medical Center, Palo Alto
Background/Purpose: Susac Syndrome (SuS) is a rare immune-mediated vasculo-occlusive disease characterized by a triad of encephalopathy, hearing loss, and branched retinal artery occlusions. Deficits can…
Abstract Number: 0005 • ACR Convergence 2025
LBL-047, A First-In-Class Anti-BDCA2/TACI Fusion Protein, Inhibits the Function of Both pDCs and B cells
Fengxia Li¹, Jianming Sun¹, Hailin Wang¹, Yan Zhu¹, Xiaoxiao Liu¹, Jing Li¹, Yurong Qin¹, Guojin Wu¹, Jing Guan¹, Min Chen¹, Jordan Zhu², Xiaoqiang Kang¹, Xiao Huang¹ and Hong Ling¹, ¹Nanjing Leads Biolabs Co., Ltd., Nan Jing, China (People's Republic), ²Nanjing Leads Biolabs Co., Ltd., Nan Jing
Background/Purpose: Blood dendritic cell antigen 2 (BDCA2) is specifically expressed on pDCs whose uncontrolled production of type I IFN play a crucial role in the…
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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