Abstracts tagged "B-Cell Targets"

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: 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: 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: 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: 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…

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