Abstracts tagged "B-Cell Targets"

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: 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: 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: 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: 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: 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 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: 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…

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