Abstracts tagged "B-Lymphocyte"

Abstract Number: 0782 • ACR Convergence 2025
Expansion of T-bet⁺ Age-Associated B Cells Is Associated with Clinical Complications in Still’s Disease
Krisztian Csomos¹, Boglarka Ujhazi¹, Mariana Correia Marques², Emily Rosenbaum¹ and Michael Ombrello³, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), NIH, Bethesda, MD, ²Translational Genetics and Genomics Section, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, ³National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), North Bethesda, MD
Background/Purpose: Still’s disease is a rare and severe autoinflammatory disorder characterized by daily spiking fevers, arthritis, an evanescent rash, and prominent systemic features, including lymphadenopathy,…
Abstract Number: 1694 • ACR Convergence 2025
Obesity Exacerbates Autoimmunity by Dysregulating B Cell Behavior
Munir Akkaya, Sohret Gokcek, Billur Akkaya and Wael Jarjour, The Ohio State University, Columbus, OH
Background/Purpose: Obesity is a major public health concern in the United States, affecting over 100 million individuals. While its detrimental effects on multiple organ systems…
Abstract Number: 0521 • ACR Convergence 2025
Umbilical cord-derived mesenchymal stem cells suppress the pathogenesis of primary Sjögren’s disease by inducing Bach2 expression
Yukitomo Hagiwara¹, Goh Murayama², Taiga Kuga³, Yujin Nishioka⁴, Masaki Nojima¹, Takumi Saito⁵, Yu Yamaji⁶, Tomoko Miyashita⁶, Makio Kusaoi⁷, Ken Yamaji⁵ and Naoto Tamura⁸, ¹Juntendo University, Department of Internal Medicine and Rheumatology, Bunkyo-ku, Tokyo, Japan, ²Department of Internal Medicine and Rheumatology, Juntendo University Graduate School of Medicine, Tokyo, Japan, ³Juntendo University, Tokyo, Japan, ⁴Juntendo University, Department of Internal Medicine and Rheumatology, Shizuoka, Japan, ⁵Juntendo University, Department of Internal Medicine and Rheumatology, Tokyo, Japan, ⁶Juntendo University, Department of Internal Medicine and Rheumatology, Bunkyo-ku, Tokyo, ⁷Juntendo University, Department of Internal Medicine and Rheumatology, Bunkyo, Tokyo, Japan, ⁸Juntendo University School of Medicine, Tokyo, Japan
Background/Purpose: Primary Sjögren's disease (pSD) is characterized by lymphocytic infiltration of the salivary and lacrimal glands, leading to functional loss and gradually causing dry mouth…
Abstract Number: 1693 • ACR Convergence 2025
Characterizing ANCA-specific B Cells in ANCA-associated Vasculitis
Laura van Dam¹, Mengrui Zhang¹, Shima Parsafar², Audra Horomanski³, Sajede Rasouli², Orr Sharpe², Jolijn van Leeuwen⁴, Tobias Lanz², Cees van Kooten⁴, Onno Teng⁵ and William H. Robinson³, ¹Stanford University, Stanford, CA, ²Stanford University, Stanford, ³Stanford University, Palo Alto, CA, ⁴Leiden University Medical Center, Leiden, Netherlands, ⁵Leiden University Medical Center, Leiderdorp, Netherlands
Background/Purpose: Anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV) is a severe autoimmune disease, characterized by ANCAs targeting myeloperoxidase (MPO) or proteinase-3 (PR3). ANCA-specific B cells have…
Abstract Number: 0143 • ACR Convergence 2025
High-dimensional Spectral Flow Cytometry Reveals a Unique Distribution of Circulating B Cells in Patients with Antiphospholipid Syndrome
Yuzhou Gan¹, Srilakshmi Yalavarthi², Yiran Shen¹, Cyrus Sarosh³, Xiangjun Liu⁴, Ajay Tambralli¹, Jacqueline Madison¹, Yu (Ray) Zuo¹ and Jason S. Knight¹, ¹University of Michigan, Ann Arbor, MI, ²Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, ³University of Michigan, Temperance, MI, ⁴Peking University, Beijing, Beijing, China
Background/Purpose: Background: Antiphospholipid syndrome (APS) is a systemic autoimmune disorder characterized by the presence of pathogenic antiphospholipid antibodies (aPL) in the setting of venous or…
Abstract Number: 1692 • ACR Convergence 2025
Rheumatoid factor is associated with increased gut permeability and migration of B cells to the joint via CXCR3 in rheumatoid arthritis
Ken Yasaka¹, Nida Pellett², Daria Krenitsky¹ and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical center, Rochester, NY
Background/Purpose: It has been proposed that the mucosal environment is associated with the pathogenesis of rheumatoid arthritis (RA). In addition to gut dysbiosis, intestinal barrier…
Abstract Number: 0029 • ACR Convergence 2025
A Novel B Cell Subpopulation Characteristic of IgA Vasculitis Identified by Single-Cell RNA Sequencing
Joao Carlos Batista-Liz¹, María Sebastián Mora-Gil², Evan Troendle³, Oisin Cappa³, Maite Leonardo⁴, Ana Peñalba⁴, Luis mARTIN pENAGOS⁵, Ligia Gabrie-Rodriguez⁶, Rafael Gálvez Sánchez⁶, Jose Luis Callejas⁷, Belen Sevilla⁸, Diego de Argila⁹, Esther Vicente-Rabaneda⁹, Santos Castañeda¹⁰, David Simpson³, Ricardo Blanco¹¹, Verónica Pulito Cueto¹ and Raquel Lopez Mejias¹, ¹IDIVAL, Santander, Spain, ²Immunopathology Group, IDIVAL, Santander, Spain, ³Queens University, Wellcome-Wolfson Institute for Experimental Medicine, Belfast, United Kingdom, ⁴Division of Pediatrics, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁵Immunopathology Group, IDIVAL and Division of Nephrology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁶Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ⁷Department of Internal Medicine, Hospital San Cecilio, Granada, Spain, ⁸Division of Pediatrics, Hospital Universitario San Cecilio, Granada, Spain, ⁹Hospital Universitario de la Princesa, Madrid, Spain, ¹⁰Hospital Universitario de La Princesa, IIS-Princesa, Madrid, Madrid, Spain, ¹¹Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain
Background/Purpose: IgA vasculitis (IgAV) is a systemic small-vessel vasculitis characterized by immune complex deposition containing aberrantly glycosylated IgA1. While its clinical manifestations are well defined…
Abstract Number: 1172 • ACR Convergence 2025
A Phase II, Single-Site, Open-Label Study of Zanubrutinib in Patients with IgG4-Related Disease
Matthew Charles Baker¹, Audra Horomanski², Robert Fairchild³, Yuhan Liu³, Mariani Diaz Deluna³, Tobias Lanz⁴, Saurabh Gawde³, Mehdi Khalighi³, Benjamin Franc³, Mrudula Penta³, Nancy Pham³ and Kip Guja³, ¹Stanford University, Menlo Park, CA, ²Stanford University, Palo Alto, CA, ³Stanford University, Stanford, CA, ⁴Stanford University, Stanford
Background/Purpose: IgG4-related disease (IgG4-RD) is a chronic, systemic, immune-mediated disease that is commonly treated with B cell depletion. However, due to potential risks associated with…
Abstract Number: 2695 • ACR Convergence 2025
B-cell depletion and lymphoid follicle disruption upon different B-cell depleting agents
Carlo Tur¹, Markus Eckstein², Laura Bucci¹, Janina Auth³, Christina Bergmann¹, Simon Rauber⁴, Melanie Hagen¹, Danae-Mona Nöthling¹, Sebastian Böltz¹, Andreas Wirsching¹, Filippo Fagni⁵, Giulia Corte⁶, Panagiotis Garantziotis¹, Jule Taubmann⁷, jochen wacker¹, Andreas Ramming⁸, Maria Antonietta D'Agostino⁹, Arndt Hartmann¹⁰, Fabian Müller¹¹, Andreas Mackensen¹², Ricardo Grieshaber-Bouyer¹³, Georg Schett¹⁴, Aline Bozec¹ and Maria Gabriella Raimondo¹, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²Institute of Pathology and Comprehensive Cancer Center EMN, Friedrich-Alexander- Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ³Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Bayern, Germany, ⁵Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Bayern, Germany, ⁶- Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ⁷Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁸Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany, ⁹Division of Rheumatology and Clinical Immunology - Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹⁰Institute of Pathology and Comprehensive Cancer Center EMN, Friedrich-Alexander- Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ¹¹University Hospital of Erlangen, Erlangen, Germany, ¹²Department of Medicine ⁵ - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Germany, ¹³University Hospital Erlangen, Erlangen, Germany, ¹⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany
Background/Purpose: Advanced protein-based therapies targeting B-cells, including glycoengineered CD20 monoclonal antibody obinutuzumab (OBI) and the CD19/CD3 T-cell engager blinatumumab (BLI), show promise for managing severe…
Abstract Number: 1096 • ACR Convergence 2025
Impact of IL-6 Receptor and JAK Inhibitors on Humoral Immunity in Inflammatory Rheumatic Diseases: An Ambispective Study.
Elisabet Perea¹, Antonio Avilés², Cristina RodrÍguez-Alvear³, Paloma Vela², Vega Jovaní⁴, Agustín Martínez², M.Pilar Bernabeu Gonzalvez², Irene Calabuig², Ana Lucia Jiménez-Portillo⁵, Alejandra Bermúdez², Silvia Gomez-Sabater², Rocío Caño², Francisco Marco⁵ and Mariano Andrés⁶, ¹Rheumatology Department, Dr. Balmis General University Hospital, Alicante, Spain, Alicante, Spain, ²Rheumatology Department, Dr. Balmis General University Hospital, Alicante, Spain., Alicante, Spain, ³Virgen de la Peña General Hospital, Fuerteventura, Spain, ⁴Hospital General Universitario de Alicante, Reumatología, Alicante, Alicante, Comunidad Valenciana, Spain, ⁵Immunology Department, Dr. Balmis General University Hospital, Alicante, Spain., Alicante, Spain, ⁶Dr Balmis Alicante General University Hospital-ISABIAL, Alicante, Spain
Background/Purpose: Interleukin-6 (IL-6) is a proinflammatory cytokine involved in B cell differentiation and antibody production through the JAK/STAT pathway. In clinical practice, hypogammaglobulinemia (HGG) has…
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,…

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