Abstracts tagged "B-Lymphocyte"

Abstract Number: 0784 • ACR Convergence 2022
Breakthrough SARS-CoV-2 Infections in Immune Mediated Disease Patients Undergoing B Cell Depleting Therapy: A Retrospective Cohort Analysis
Cassandra Calabrese¹, Elizabeth Kirchner², M. Elaine Husni³, Brandon Moss², Anthony Fernandez², Yuxuan Jin³ and Leonard Calabrese³, ¹Cleveland Clinic Foundation, Cleveland Heights, OH, ²Cleveland Clinic Foundation, Cleveland, OH, ³Cleveland Clinic, Cleveland, OH
Background/Purpose: Immunocompromised patients with immune mediated inflammatory diseases (IMIDs) undergoing therapy with B cell depleting agents (BCDT) are among the most vulnerable to severe COVID-19…
Abstract Number: 2065 • ACR Convergence 2022
Sustained B Cell Depletion in Lupus Nephritis Patients After Treatment with a B Cell Agent Is Associated with Fewer Disease Flares
Diane Zisa¹, Jeffrey Zhang-Sun¹, Paul Christos² and Kyriakos Kirou¹, ¹Hospital for Special Surgery, New York, NY, ²Weill Cornell Medicine/New York-Presbyterian, New York, NY
Background/Purpose: B cell targeting agents (BCA), including belimumab (BEL) and rituximab (RTX), have been used with success in lupus nephritis (LN) patients, though identifying patients…
Abstract Number: 0159 • ACR Convergence 2022
B Cell Phenotype in Adult Patients with Idiopathic Inflammatory Myositis (IIM) Before and After Belimumab
Tam Quach¹, Anne Davidson² and Galina Marder³, ¹Feinstein Institute for Medical Research, Manhasset, NY, ²Feinstein Institutes for Medical Research, Manhasset, NY, ³Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Great Neck, NY
Background/Purpose: Recent observations suggest the importance of the BAFF pathway in the pathogenesis of Idiopathic Inflammatory Myositis (IIM). Elevated serum levels of circulating BAFF in…
Abstract Number: 0979 • ACR Convergence 2022
Belimumab Effects on Skin in Patients with Systemic Lupus Erythematosus: A Pooled Post Hoc Analysis of Five Phase 3, Randomized, Placebo-Controlled Clinical Trials
Susan Manzi¹, Jorge Sanchez-Guerrero², Naoto Yokogawa³, Joerg Wenzel⁴, Josephine C. Ocran-Appiah⁵, Munther Khamashta⁶, Julia H N Harris⁷, Bernie Rubin⁸, Norma Lynn Fox⁹, Roger A Levy¹⁰ and Victoria Werth¹¹, ¹Allegheny Health Network, Lupus Center of Excellence, Wexford, PA, ²University of Toronto, Division of Rheumatology, Department of Medicine Mount Sinai Hospital/University Health Network, Toronto, ON, Canada, ³Tokyo Metropolitan Tama Medical Center, Department of Rheumatic Diseases, Tokyo, Japan, ⁴University Hospital of Bonn, Department of Dermatology and Allergy, Bonn, Germany, ⁵GlaxoSmithKline, Clinical Science Immunology, Rockville, MD, ⁶GlaxoSmithKline, Medical Affairs, Dubai, United Arab Emirates, ⁷GlaxoSmithKline, Immunology Biostatistics, Brentford, United Kingdom, ⁸GlaxoSmithKline, US Medical Affairs and Immuno-inflammation, Durham, NC, ⁹GlaxoSmithKline, Clinical Development *At time of study, Collegeville, PA, ¹⁰GlaxoSmithKline, Global Medical Affairs, Collegeville, PA, ¹¹Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
Background/Purpose: Mucocutaneous manifestations affect >80% of patients (pts) with SLE and can contribute to their poor quality of life through unwanted attention, self-consciousness, emotional symptoms,…
Abstract Number: 2183 • ACR Convergence 2022
mTORC2 Contributes to Murine Systemic Autoimmunity
Xian Zhou¹, Haiyu Qi¹, Meilu Li¹, Yanfeng Li¹, Xingxing Zhu², Anne Davidson³ and Hu Zeng¹, ¹Mayo Clinic, Rochester, MN, ²Mayo Clinic, Rochester, ³Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: The development of many systemic autoimmune diseases, including systemic lupus erythematosus, is associated with overactivation of the type I interferon (IFN) pathway, lymphopenia, and…
Abstract Number: 0506 • ACR Convergence 2022
Immunophenotypic Categorization of Systemic Immune-mediated Diseases
Shinji Izuka¹, Toshihiko Komai¹, Takahiro Itamiya¹, Mineto Ota², Saeko Yamada¹, Yasuo Nagafuchi², Hirofumi Shoda¹, Kosuke Matsuki³, Kazuhiko Yamamoto⁴, Tomohisa Okamura² and Keishi Fujio¹, ¹Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Bunkyo City, Tokyo, Japan, ²Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, Bunkyo City, Tokyo, Japan, ³Research Division, Chugai Pharmaceutical Co., Ltd., Kamakura, Japan, ⁴Laboratory for Autoimmune Diseases, Center for Integrative Medical Sciences, the Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan
Background/Purpose: Systemic immune-mediated diseases are heterogeneous, and the pathogenesis varies among and within each disease. Some studies tried to stratify patients with immune-mediated diseases into…
Abstract Number: 0987 • ACR Convergence 2022
A Randomized Placebo-Controlled Phase 1 Study in Healthy Adult Volunteers of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of ALPN-303, a Potent Dual BAFF/APRIL Antagonist for the Treatment of Systemic Lupus Erythematosus and Other Autoantibody-Associated Diseases
Stacey Dillon¹, Pille Harrison², Jason Lickliter³, Kristi Manjarrez¹, Alina Smith¹, Mary Lessig¹, Lori Blanchfield¹, Russell Sanderson¹, Allison Chunyk¹, Tiffany Blair¹, Amanda Enstrom¹, Martin Wolfson¹, Mark Rixon¹, Hany Zayed⁴, Rupert Davies¹ and Stanford Peng¹, ¹Alpine Immune Sciences, Seattle, WA, ²Alpine Immune Sciences, Taunton, United Kingdom, ³Nucleus Network, Melbourne, Australia, ⁴Alpine Immune Sciences, San Francisco, CA
Background/Purpose: B cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL) are tumor necrosis factor (TNF) superfamily members that bind TACI (transmembrane activator and CAML…
Abstract Number: 0600 • ACR Convergence 2022
Correlates Between Rheumatoid Arthritis Clinical Factors and Synovial Cell Phenotypes: Data from the Accelerated Medicines Partnership
Dana Weisenfeld¹, Fan Zhang², Laura Donlin³, Anna Jonsson¹, William Apruzzese¹, Debbie Campbell⁴, Ellen Gravallese⁵, Larry Moreland⁶, Susan Goodman³, Michael Brenner⁵, Soumya Raychaudhuri¹, Andrew Filer⁷, Jennifer Anolik⁸, Vivian Bykerk³ and Katherine Liao¹, ¹Brigham and Women's Hospital, Boston, MA, ²University of Colorado, Aurora, CO, ³Hospital for Special Surgery, New York, NY, ⁴University of Rochester, Rochester, ⁵Brigham and Women's Hospital, Harvard Medical School, Boston, MA, ⁶University of Colorado, Denver, CO, ⁷University of Birmingham, Birmingham, United Kingdom, ⁸University of Rochester Medical Center, Rochester, NY
Background/Purpose: Prior studies have characterized the diverse cell types in the RA synovium through a multi-center consortium incorporating RNA-seq data. Due to the novelty of…
Abstract Number: 1254 • ACR Convergence 2022
Ultra High‐Frequency Ultrasound of Labial Salivary Glands in Primary Sjögren’s Syndrome: A Promising Tool to Identify Lymphoproliferative Lesions in Unusual Sites
Giovanni Fulvio¹, Rossana Izzetti², Francesco Ferro³, Gianmaria Governato⁴, Gaetano La Rocca⁵, Silvia Fonzetti⁶, Inmaculada Concepción Navarro García⁷, Marta Mosca⁸, Valentina Donati⁹ and Chiara Baldini¹, ¹University of Pisa, Pisa, Pisa, Italy, ²Unit of Dentistry and Oral Surgery, Pisa, Toscana, Italy, ³Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Pisa, Italy, ⁴Azienda Ospedaliera Universitaria Pisana, Pisa, Pisa, Italy, ⁵University of Pisa, Rheumatology Unit, Palermo, Palermo, Italy, ⁶Azienda Ospedaliera Universitaria Pisana, Pisa, Italy, ⁷Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, ⁸Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy, ⁹Pathology Unit, University of Pisa, Pisa, Italy
Background/Purpose: Major salivary gland (MSG) ultrasound (US) is a useful tool in Sjögren's syndrome (SS) diagnostic work-up. Interestingly, in a recent case series, specific US…
Abstract Number: 0618 • ACR Convergence 2022
Regulation of IgA Secretion Through PAD2-mediated Citrullination of MZB1
Bo Sun¹, Benjamin Geary², Santanu Mondal³, Ronak Tilvawala⁴, Konstantin Tsoyi⁵, Ivan O. Rosas⁵, Paul Thompson³ and I-Cheng Ho², ¹Brigham and Women's Hospital, Lexington, MA, ²Brigham and Women's Hospital, Boston, MA, ³UMass Medical School, Worcester, MA, ⁴University of Kansas, Lawrence, KS, ⁵Baylor College of Medicine, Houston, TX
Background/Purpose: The secretion of antibody requires concerted action of several endoplasmic reticulum proteins (ERPs) in B cells. For example, marginal zone B and B1 cell-specific…
Abstract Number: 1527 • ACR Convergence 2022
Maintained Complete B Cell Depletion Is Associated with Rituximab Efficacy in Connective Tissue Disorder Interstitial Lung Disease
Jérôme Avouac¹, Roba Ghossan², Omar Al Tabaa³, Alice Combier², Alexia Steelandt², Marion Thomas⁴ and Yannick Allanore⁵, ¹University of Paris, Paris, France, ²Hôpital Cochin, AP-HP.Centre - Université Paris Cité, Paris, France, ³Hôpital Cochin, AP-HP Centre - Université Paris Cité, Paris, France, ⁴Hôpital Cochin, AP-HP Centre - Université Paris Cité, Paris, France, ⁵Department of Rheumatology A, Descartes University, APHP, Cochin Hospital, Paris, France, Paris, France
Background/Purpose: The benefit of RTX has been suggested for interstitial lung disease (ILD) associated with connective tissue disorders (CTD). Preliminary data have suggested that B…
Abstract Number: 0623 • ACR Convergence 2022
Rheumatoid Synovial Fibroblasts Display Imprinted Memory of Their Synovial Endotype Which Can Be Plastically Modulated by B-cells Crosstalk
Edoardo Prediletto¹, Cankut Cubuk², Elena Pontarini³, Felice Rivellese², Alessandra Nerviani², Davide Lucchesi³, Mattia Caliste¹, Elisa Corsiero¹, Manzoor Ahmed³, rebecca hands³, Myles Lewis², Costantino Pitzalis² and Michele Bombardieri⁴, ¹Wlliam Harvey Research Institute Queen Mary University on London, London, United Kingdom, ²Queen Mary University of London, London, United Kingdom, ³William Harvey Research Institute, London, United Kingdom, ⁴Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University, London, United Kingdom
Background/Purpose: Despite advances in the treatment of Rheumatoid Arthritis (RA), synthetics and biologicals drugs are ineffective in ~40% of patients. The origin of this refractoriness…
Abstract Number: 1627 • ACR Convergence 2022
BAFF-var Is a New Predisposing Factor for Primary Sjögren’s Syndrome (pSS) and Impacts Disease Activity
Marie Dulin¹, Maxime Beydon², Bineta Ly³, Veronique Le Guern⁴, Raphaèle Seror⁵, Xavier Mariette⁶ and Gaetane Nocturne⁷, ¹Kremlin Bicêtre Hospital - APHP, Paris, France, ²Université Paris Cité, Paris, France, ³INSERM UMR1184, Le Kremlin Bicêtre, France, ⁴Hôpital Cochin, Paris, France, ⁵University Hospital Paris-Saclay, Le Kremlin Bicêtre, France, ⁶Paris-Saclay University, Rueil Malmaison, Ile-de-France, France, ⁷APHP, Le Kremlin Bicêtre, France
Background/Purpose: Chronic B cell activation plays a key role in pSS pathogeny. BAFF (B-cell activating factor) is largely involved in this process and positive results…
Abstract Number: 0632 • ACR Convergence 2022
Single-cell Multiomic Profiling Differentiates Ancestral B Cell Pathologies Contributing to Lupus Disease Activity
Kevin Thomas, Miles Smith, Samantha Slight-Webb, Susan Macwana, Joseph Kheir, Carla J. Guthridge, Wade deJager, Christian Wright, Bolanle Adebayo, Judith James and Joel Guthridge, Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Genetic ancestry impacts SLE prevalence, clinical presentation, and treatment response; however, the molecular underpinnings of this disparity remain poorly understood. Recent findings demonstrate that…
Abstract Number: 1630 • ACR Convergence 2022
Single-cell Profiling of B Cell Repertoire and Gene Expression in the RA Synovium Reveals Tissue Specific Clonal Expansion
Aaron Wagner¹, Nida Meednu², Garrett Dunlap³, Fan Zhang⁴, Anna Jonsson⁵, Kevin Wei⁶, Ami Ben-artzi⁷, Lindsy Forbess⁸, Laura Geraldino-Pardilla⁹, Diane Horowitz¹⁰, Laura Hughes¹¹, Arthur Mandelin¹², Karen Salomon-Escoto¹³, Darren Tabechian¹⁴, Edward DiCarlo¹⁵, Ellen Gravallese¹⁶, Brendan Boyce¹⁷, Christopher Ritchlin¹⁸, James Lederer⁵, Mandy McGeachy¹⁹, Peter Gregersen²⁰, Paul Utz²¹, William Robinson²¹, Holden Maecker²¹, Judith James²², Joel Guthridge²², Harris Perlman²³, Joan Bathon⁹, Susan Goodman¹⁵, Gary S. Firestein²⁴, David Boyle²⁵, S. Louis Bridges, Jr.¹⁵, Kevin D Deane²⁶, V. Michael Holers²⁷, Larry Moreland²⁷, Andrew Filer²⁸, Costantino Pitzalis²⁹, Vivian Bykerk¹⁵, Laura Donlin¹⁵, Soumya Raychaudhuri⁵, Michael Brenner¹⁶, AMP RA/Lupus¹⁷, Deepak Rao⁵, Andrew McDavid¹ and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical center, Rochester, NY, ³Harvard University, Boston, MA, ⁴University of Colorado, Aurora, CO, ⁵Brigham and Women's Hospital, Boston, MA, ⁶Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ⁷Ami Ben-Artzi, MD Inc., Beverly Hills, CA, ⁸Cedars-Sinai Medical Center, Los Angeles, CA, ⁹Columbia University, New York, NY, ¹⁰Northwell Health, Jericho, NY, ¹¹University of Alabama at Birmingham, Birmingham, AL, ¹²Northwestern University Feinberg School of Medicine, Chicago, IL, ¹³University of Massachusetts Medical School, Worcester, MA, ¹⁴URMC, Rochester, NY, ¹⁵Hospital for Special Surgery, New York, NY, ¹⁶Brigham and Women's Hospital, Harvard Medical School, Boston, MA, ¹⁷University of Rochester, Rochester, ¹⁸Allergy, Immunology and Rheumatology Division, University of Rochester Medical School, Canandaigua, NY, ¹⁹University of Pittsburgh, Pittsburgh, PA, ²⁰The Feinstein Inst for Med Research, Larchmont, NY, ²¹Stanford University School of Medicine, Palo Alto, CA, ²²Oklahoma Medical Research Foundation, Oklahoma City, OK, ²³Northwestern University, Chicago, IL, ²⁴University of California, San Diego, San Diego, CA, ²⁵UCSD, La Jolla, CA, ²⁶University of Colorado Denver Anschutz Medical Campus, Denver, CO, ²⁷University of Colorado, Denver, CO, ²⁸University of Birmingham, Birmingham, United Kingdom, ²⁹Queen Mary University of London, London, United Kingdom
Background/Purpose: Ectopic lymphoid structures can develop in rheumatoid arthritis (RA) synovial tissue, but the precise pathways of B cell activation and selection are not well…

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