Abstracts tagged "B-Cell Targets"

Abstract Number: 1666 • ACR Convergence 2025
Treatment with Rilzabrutinib was associated with Rapid and Sustained Reduction in Disease Activity in Patients with IgG4-RD Previously Treated or Naïve to B cell Depletion
John Stone¹, Mollie Carruthers², Alireza Meysami³, Matthew Charles Baker⁴, Daniela Ghetie⁵, Lindsay Lally⁶, Fernando Martinez-Valle⁷, Lorenzo Dagna⁸, nicolas schleinitz⁹, Jeea Choi¹⁰, Leda Mannent¹¹ and Owen Hagino¹⁰, ¹Massachusetts General Hospital , Harvard Medical School, Concord, MA, ²Vancouver General Hospital, Vancouver, BC, Canada, ³Henry Ford Health, Detroit, MI, ⁴Stanford University, Menlo Park, CA, ⁵Oregon Health and Science University, Portland, OR, ⁶Hospital for Special Surgery, NEW YORK, NY, ⁷Vall d’Hebron Hospital, Barcelona, Spain, ⁸IIRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy, ⁹Aix Marseille university, AP-HM, Marseille, France, ¹⁰Sanofi, Morristown, NJ, ¹¹Sanofi, Gentilly, France
Background/Purpose: IgG4-RD is a progressive, immune-mediated fibrotic disease with limited treatment options. Rilzabrutinib is a reversible, orally available inhibitor of Bruton's tyrosine kinase (BTKi). Here,…
Abstract Number: 0962 • ACR Convergence 2025
Spatial Proteomics Analysis of the organization of tertiary lymphoid structures in Systemic Sclerosis Skin
Dennis Bleck¹, Karen Drechsel², Tim Filla³, Yi-Nan Li⁴, Andrea-Hermina Györfi⁵, Alexandru-Emil Matei⁶ and Jörg Distler⁷, ¹University Hospital Düsseldorf, Department of Rheumatology, Hiller Research Center, Düsseldorf, Nordrhein-Westfalen, Germany, ²University Hospital Düsseldorf, Department of Rheumatology, Hiller Research center, Düsseldorf, Nordrhein-Westfalen, Germany, ³Department 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, ⁴University Hospital of Düsseldorf, Düsseldorf, Nordrhein-Westfalen, Germany, ⁵Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University., Düsseldorf, Germany, ⁶Department 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, ⁷University Hospital Duesseldorf and HHU, Duesseldorf, Germany
Background/Purpose: Systemic Sclerosis (SSc) is a rare autoimmune connective tissue disease and presents a significant medical challenge. It is characterized by fibrotic tissue remodeling, along…
Abstract Number: 0642 • ACR Convergence 2025
Belimumab-Based Triple Therapy in Proliferative Lupus Nephritis: Renal Outcomes and Glucocorticoid Tapering in a Real-World Multicenter Cohort
Paola Vidal Montal¹, Javier Narváez², Aina Fabregat³, Iñigo Rúa-Figueroa⁴, José María Pego-Reigosa⁵, Andrea Hernández-martín⁶, Clara Moriano⁷, Maria Garcia-Villanueva⁸, Sandra Garrote Corral⁹, Sergi Heredia¹⁰, Julia Martínez Barrio¹¹, Júlia Bernardez Moreno¹², Paloma Vela Casasempere¹³, Beatriz Tejera Segura¹⁴, Leyre Riancho¹⁵, Francisco Javier Novoa¹⁶, Vicenç Torrente-Segarra¹⁷, Maria Piqueras García¹⁸, Beatriz Frade Sosa¹⁹, José Gomez-Puerta²⁰, Consuelo Ramos Giraldez²¹, Tarek Salman Montes²², María Galindo-Izquierdo²³, EVA GLORIA TOMERO MURIEL²⁴, Jaime calvo²⁵, Jorge Juan Fragío Gil²⁶, Marta De la Rubia Navarro²⁷, Berta Magallares²⁸ and Irene Altabás-González²⁹, ¹Bellvitge University Hospital, Barcelona, Spain, ²Hospital Universitario de Bellvitge, Barcelona, Spain, ³Department of Rheumatology. Hospital Universitario de Bellvitge., Barcelona, Spain, ⁴Hospital de Gran Canaria Doctor Negrin, Las Palmas GC, Spain, ⁵Department of Rheumatology, University Hospital of Vigo, Vigo, Spain; IRIDIS Group (Investigation in Rheumatology and Immune-Diseases), Galicia Sur Health Research Institute, Vigo, Spain, ⁶Hospital Universitario de Gran Canaria Dr Negrín, Las palmas, Spain, ⁷Hospital León, LEON, Castilla y Leon, Spain, ⁸Hospital Ramón y Cajal, Madrid, Spain, ⁹Hospital Ramón y Cajal, Madrid, ¹⁰Hospital Moisès Broggi, Barcelona, Spain, ¹¹Department of Rheumatology, Hospital Gregorio Marañón, Madrid, Spain, Madrid, Madrid, Spain, ¹²Hospital de Sant Pau, Barcelona, Spain, ¹³Hospital General Universitario Alicante, Alicante, Comunidad Valenciana, Spain, ¹⁴Hospital Insular de Gran Canaria, Las palmas, Spain, ¹⁵Hospital de Sierrallana, Torrelavega, ¹⁶Hospital Insular de Gran Canaria, Las palmas, ¹⁷Hospital Comarcal Alt Penedés Garraf, Vilafranca del Penedès, Spain, ¹⁸Servicio Murciano de Salud, Murcia, Spain, ¹⁹Hospital Clinic de Barcelona, Barcelona, Catalonia, Spain, ²⁰Rheumatology Department, Hospital Clinic, Barcelona, Spain, Barcelona, Spain, ²¹Hospital Universitario Virgen de Valme, Servicio de Reumatología, Seville, Spain, ²²Hospital del Mar/Parc de Salut Mar-IMIM, Barcelona, Spain, ²³Department of Rheumatology, Hospital Universitario ¹² de Octubre, Madrid, Spain, Madrid, Madrid, Spain, ²⁴Hospital Universitario de la Princesa, Madrid, Spain, ²⁵Hospital de Araba, Vitoria, Spain, ²⁶Hospital General Universitario, Valencia, Spain, ²⁷Hospital de La Fe, Valencia, ²⁸Hospital de Sant Pau, Bareclona, ²⁹Complejo Hospitalario de Vigo, Vigo, Spain
Background/Purpose: The newly published ACR guidelines recommend initiating triple therapy for all patients with proliferative lupus nephritis (LN). While belimumab (BEL) has demonstrated efficacy in…
Abstract Number: 0011 • ACR Convergence 2025
KT502, a novel CD19-directed TCE (T-cell engager), leads to rapid and deep B-cell depletion with low cytokine release
Min Bao, John Wang, Jay Zhao and Weihao Xu, Kali Therapeutics, San Mateo, CA
Background/Purpose: Chimeric antigen receptor T-cell (CAR-T) therapies targeting CD19 have shown unprecedented effects in treatment-resistant autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis…
Abstract Number: 2464 • ACR Convergence 2025
IMC-002 (IMM0306), a First-in-Class Bi-specific Fusion Protein, Demonstrates Improvements in Systemic Lupus Erythematosus (SLE) Disease Activity Measures and Biomarkers in Patients with Moderate to Severe Active SLE in the Open-label Phase 1b/2 Study
Haihong Yao¹, Wenzhi Tian², Qian Zheng², Min Chen², Guoping Jiang³, Zhichun Liu⁴, Yingkun Nie⁵, Rui Wu⁶, Zhaohui Zheng⁷ and Zhanguo Li¹, ¹Peking University People's Hospital, Beijing, China (People's Republic), ²ImmuneCare Biopharmaceuticals (Shanghai) Co.,Ltd, Shanghai, China (People's Republic), ³Jilin Province People's Hospital, Changchun, China (People's Republic), ⁴The Second Affiliated Hospital of Soochow, Suzhou, China (People's Republic), ⁵The Second Affiliated Hospital of Harbin Medical University, Haerbin, China (People's Republic), ⁶The First Affiliated Hospital of Nanchang University, Nanchang, China (People's Republic), ⁷The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China (People's Republic)
Background/Purpose: Deep B cell depletion has been confirmed to be the main mechanism for complete clinical response of SLE patients. We analyzed the peripheral blood…
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…

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