Abstracts tagged "B-Lymphocyte"

Abstract Number: LB11 • ACR Convergence 2025
Efficacy and Safety of Telitacicept in Patients with Sjögren’s Disease: Results from a Multicenter, Randomized, Double-blind, Placebo-controlled, Phase 3 Clinical Study
Dong Xu¹, Shangzhu Zhang¹, Lin Qiao¹, Li Zhang¹, Wenxiang Wang², Lin Li², Binghua Xiao², Jing Zhang², Qing Zuraw³, Jianmin Fang² and Xiaofeng Zeng¹, ¹Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences & Peking Union Medical College; National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Ministry of Science & Technology; State Key Laboratory of Complex Severe and Rare Diseases; Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China (People's Republic), ²RemeGen Co., Ltd., Rheumatology, Yantai, China (People's Republic), ³Vor Biopharma Inc., Boston
Background/Purpose: Sjögren's disease (SjD) is a chronic autoimmune disease whose pathogenesis is associated with aberrant activation of B-lymphocytes. Telitacicept, a novel fusion protein, dually targets and…
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: 2439 • ACR Convergence 2025
Belimumab Versus Mycophenolate Mofetil in Lupus Nephritis: A Real-World Comparative Analysis
Ahmad Alomari¹, Nikita Shah², Miguel Rodriguez³ and Diala Alawneh⁴, ¹UCF- North Florida hospital, Gainesville, FL, ²UCF/HCA Florida North Florida Hospital, Gainesville, FL, ³SIMED Rheumatology, Gainesville, FL, ⁴University of Florida, Gainesville, FL
Background/Purpose: Lupus nephritis (LN) is a serious complication of systemic lupus erythematosus (SLE), often leading to chronic kidney disease (CKD) and end-stage renal disease (ESRD).…
Abstract Number: 1003 • ACR Convergence 2025
Potent Engineering of Polyfunctional CD8+ T Cells by a Novel In Vivo CAR mRNA Product Candidate (CPTX2309) in a Targeted Lipid Nanoparticle (tLNP) Utilizing CellSeekerTM Technology
Yan Zhang¹, Brittany Ross¹, Aditi Upadhye¹, Diana Galvan¹, Shaun E Grosskurth¹, Yanjie Bao¹, Romina Riener¹, Annabel Wang¹, Aric Frantz¹, Gregor B Adams¹, Michael Rosenzweig¹, Ramin Farzaneh-Far¹, Priya Karmali¹, Adrian I Bot¹, Carl June² and Haig Aghajanian¹, ¹Capstan Therapeutics, San Diego, CA, ²University of Pennsylvania, Philadelphia, PA
Background/Purpose: A major objective in autoimmunity is immune reset, requiring autoreactive B cell depletion in tissues. We designed an in vivo CAR product candidate (CPTX2309)…
Abstract Number: 2421 • ACR Convergence 2025
Whole Blood Immune Phenotyping Reveals Cytometric Differences in B Cell Clusters Between Lupus Nephritis and Non-Lupus Nephritis SLE Patients with Minimal Proteinuria
Nicholas Bauer¹, Philip Carlucci², Rufei Lu¹, Carla Guthridge¹, Tayte Stephens³, Benjamin Jones⁴, Wade DeJager⁵, Susan Macwana¹, Andrea Fava⁶, Sanchit Sanyal⁷, Erin Carter⁸, Mala Masson⁹, Jennifer Anolik¹⁰, Jennifer Barnas¹¹, Peter Izmirly¹², H Michael Belmont¹³, Kelly Ruggles¹⁴, Study Team ALE⁰⁶ Clinical¹, Brad Rovin¹⁵, Jill Buyon¹⁶, Michelle Petri¹⁷, Judith James¹ and Joel Guthridge¹, ¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²New York University School of Medicine, New York, NY, ³University of Oklahoma Health Science Center, Oklahoma City, OK, ⁴Oklahoma State University, Oklahoma City, OK, ⁵Oklahoma Medical Research Foundation, Oklahoma City, ⁶Johns Hopkins University, Baltimore, MD, ⁷Johns Hopkins University School of Medicine, Baltimore, MD, ⁸New York University Grossman School of Medicine, New York, NY, ⁹NYU Langone Medical Center- Division of Rheumatology, New York, NY, ¹⁰University of Rochester Medical Center, Rochester, NY, ¹¹University of Rochester, Rochester, NY, ¹²New York University Grossman School of Medicine, New York, NY, ¹³NYU School of Medicine, New York, NY, ¹⁴NYU Grossman School of Medicine, Brooklyn, NY, ¹⁵The Ohio State University, Columbus, OH, ¹⁶NYU Grossman School of Medicine, New York, NY, ¹⁷Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: Autoreactive B cell populations play a key role in the pathogenesis of lupus nephritis (LN). Therefore, it is hypothesized that dysregulation in the B…
Abstract Number: 0991 • ACR Convergence 2025
MTHFD2 is a Novel Metabolic Target in Autoimmune Disease
Laura McMillan, Celia Evans, Marina Makrecka-Kuka, Niamh Richmond, Gareth Davies, Hamel Patel, Michael Herdman, Mark Whitmarsh, Alessandro Mazzacani, Peter Bunyard, Madduri Ravin Rao and Iain Kilty, Sitryx Therapeutics, Oxford, United Kingdom
Background/Purpose: Aberrant activation and persistence of adaptive immune responses play a central role in autoimmune pathogenesis. Where traditional immunosuppressive therapies offer a broad targeting approach,…
Abstract Number: 2048 • ACR Convergence 2025
DDR2 auto-phosphorylation in patients with Warburg-Cinotti syndrome promotes differentiation of fibroblasts into myofibroblasts and expansion of immature B cells with antibody production.
Sang Jin LEE and Yun Jeong Lee, Kyungpook National University School of Medicine, Daegu, Republic of Korea
Background/Purpose: Warburg-Cinotti syndrome (WCS) is a rare connective tissue disorder caused by activating mutations in the DDR2 gene, characterized by progressive corneal neovascularization, keloid-like plaques,…
Abstract Number: 0982 • ACR Convergence 2025
Impact of Immunosuppressive Therapies on Shingrix Vaccine Response in Immune-Mediated Inflammatory Diseases
cristiana Sieiro¹, Juan García Herrero², Jose Ordas Martínez³, Carolina Álvarez Castro³, Alejandra López Robles³, Ronald Colindres³, Ana María Sahagún⁴ and Jose María Ruiz de Morales³, ¹Univrsity of Manchester, Manchester, United Kingdom, ²complejo asistencial universitario de leon, León, Spain, ³Complejo Asistencial Universitario de León, León, Spain, ⁴University of Leon, León, Spain
Background/Purpose: Herpes zoster (HZ) is a common infection, particularly in older adults and women, and can lead to complications like neuropathic pain. The risk is…
Abstract Number: 1838 • ACR Convergence 2025
Differential Expression Of Activation Markers On dsDNA-reactive B-cells Between Healthy Subjects And SLE Patients Reveals Unconventional Extrafollicular Activation In SLE
Lars Van Vliet, Annemarie Dorjée, René Toes and Jolien Suurmond, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Anti-dsDNA IgG antibodies are a hallmark of systemic lupus erythematosus (SLE), an autoimmune disease characterized by chronic inflammation and multi-organ damage. Evidence suggests that…
Abstract Number: 0941 • ACR Convergence 2025
In Vivo PanCAR Therapy Utilizing Circular RNA for Treatment of Autoimmune Diseases
Juliet Crabtree, Thomas Lee, David Soto, Prapti Vyas, Akinola Emmanuel, Matthew Theisen, Karolina Kosakowska, Maja Sedic, Rajat Das, Muthusamy Jayaraman, Megan Hoban, Joe Bolen and Isin Dalkilic-Liddle, Orna Therapeutics, watertown, MA
Background/Purpose: Recently, traditional ex vivo-generated chimeric antigen receptor T (CAR-T) cell therapies have shown success in the clinic for autoimmunity indications. However, manufacturing, safety, and…
Abstract Number: 1836 • ACR Convergence 2025
Emerging Role of B Cell Subtype-Specific Intracytoplasmic Toll-Like Receptor Expression and Serum Eotaxin as Biomarkers in Lupus Nephritis
Jennifer Tiaré Balderas Miranda¹, Yatzil Reyna Juárez², Beatriz Alcalá-Carmona³, Nancy R Mejía Domínguez⁴, María José Ostos Prado³, José Luis Maravillas-Montero⁵, Fabiola Cassiano-Quezada⁶, Guillermo Juárez Vega⁴, karina santana⁷, Jiram Torres Ruiz⁸ and Diana Gómez-Martín⁹, ¹Universidad Nacional Autónoma de México, Coyoacán, Federal District, Mexico, ²Instituto Politècnico Nacional, Tultitlán de Mariano Escobedo, Mexico State, Mexico, ³Instituto Nacional De Ciencias Médicas Y Nutrición Salvador Zubirán, Mexico City, Distrito Federal, Mexico, ⁴Universidad Nacional Autónoma de México, Mexico City, Distrito Federal, Mexico, ⁵Red de Apoyo a la Investigación, Universidad Nacional Autónoma de México, Tlalpan, Distrito Federal, Mexico, ⁶Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, Mexico, ⁷INCMNSZ, Ciudad de México, Federal District, Mexico, ⁸INCMNSZ, Mexico, Federal District, Mexico, ⁹INCMNSZ, Mexico city, Federal District, Mexico
Background/Purpose: B cells play an essential role in lupus nephritis (LN) pathogenesis. However, abnormalities in specific subtypes like age-associated B cells (ABCs) and double negative…
Abstract Number: 0934 • ACR Convergence 2025
The Use Of Preclinical Models To Understand Drivers Of Lupus Pathogenesis
Arielle Glatman Zaretsky¹, Carley Tasker¹, Pablo Abreu¹, Ciara Torres², Li-Hong Ben¹, Scott MacDonnell¹, Andre Limnander¹ and Jamie Orengo¹, ¹Regeneron, Tarrytown, NY, ²Regeneron, Tarrytown
Background/Purpose: Systemic Lupus Erythematosus (SLE) is a chronic, multisystem autoimmune disease with a prevalence of 1.4-15.13/100,000 adults globally. SLE is highly heterogenous and can involve…
Abstract Number: 1773 • ACR Convergence 2025
Redefining disease activity assessment in IgG4-Related Disease: The role of classical and novel biomarkers
Marta López¹, rafeal Benito-Melero², Laura Martinez-Martinez³, Hye Sang-Park⁴, sara Calleja³, Helena Codes Mendez⁵, Mar Concepción Martín³, Berta Magallares³, Ivan Castellví⁶, Ana Laiz⁵, Cesar Diaz³ and Hector Corominas⁷, ¹Complex Hospitalari Universitari Moisés Broggi, Barcelona, Spain, ²MD, barcelona, Spain, ³Hospital Santa Creu i Sant Pau, Barcelona, Spain, ⁴Hospital Santa Creu i Sant Pau, Barcelona, Catalonia, Spain, ⁵Sant Pau Hospital, Barcelona, Spain, ⁶Hospital de la Santa Creu i Sant Pau, Barcelona, Spain, barcelona, Spain, ⁷Hospital de Sant Pau, Barcelona, Spain
Background/Purpose: IgG4-related disease (IgG4-RD) is a systemic fibroinflammatory disorder characterized by elevated serum IgG4 levels and tissue infiltration by IgG4-positive plasma cells. Despite advances in…
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: 1766 • ACR Convergence 2025
Clinical Impact of Incomplete B-cell Depletion in ANCA-Associated Vasculitis Patients Receiving Maintenance Rituximab Therapy: a Retrospective Study
caterina ricordi¹, Maxime Beydon², Johanne Liberatore³, Pascal Cohen⁴, bertrand Dunogue⁵, Camille Mettler⁶, Benjamin Torreau⁷, Luc Mouthon⁵, Xavier Puéchal⁸ and Benjamin Terrier⁹, ¹Unit of Rheumatology, Azienda USL - IRCCS di Reggio Emilia, and University of Modena and Reggio Emilia, Reggio Emilia, Italy, ²Sorbonne University, INSERM, Institut Pierre Louis of Epidemiology and Public Health, Equipe PEPITES, Pitié Salpêtrière Hospital, Service of Public Health, Centre of Pharmacoepidemiology (Cephepi), Paris, France, ³Department of Internal Medicine, Centre Hospitalier d’Angouleme, Angouleme, France, ⁴Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Hospital Cochin, Paris, France, ⁵Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Cochin University Hospital, Université Paris Cité, AP-HP, Paris, France, ⁶Department of Internal Medicine, Hôpital Bichat - Claude-Bernard, Paris, France, ⁷Internal Medicine and Immunology, CHU Tours, Tours, France, ⁸Department of Internal Medicine, National Referral Center for Rare Systemic Autoimmune Diseases, Hospital Cochin, and Université Paris Cité, Paris ( ⁷⁵⁰¹⁴ ), Ile-de-France, France, ⁹Cochin Hospital, Paris, France
Background/Purpose: Rituximab (RTX) is the standard of care for both induction and maintenance in ANCA-associated vasculitides (AAVs). While CD19 B-cell monitoring is used to evaluate…

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