Abstracts tagged "B-Lymphocyte"

Abstract Number: 0016 • ACR Convergence 2022
Distinct Transcriptomic and Epigenetic Profiles Mediated by Disease Activity in SLE
Yusho Ishii, James Rose, Kevin Cashman, Sakeenah Hicks, Tsuneo Deguchi, Christopher Scharer, Scott Jenks, Jeremy Boss and Iñaki Sanz, Emory University, Atlanta, GA
Background/Purpose: SLE is an autoimmune disease heterogenous for symptoms, disease severity and therapeutic response. This heterogeneity makes stratifying patients difficult. B cells from SLE patients…
Abstract Number: 0783 • ACR Convergence 2022
Breakthrough SARS-CoV-2 Infections and Predicting Severe Outcomes During Rituximab Therapy in Autoimmune Rheumatic Diseases
Md Yuzaiful Md Yusof¹, Jack Arnold², Benazir Saleem³, Claire Vandevelde³, Shouvik Dass³, Sinisa Savic¹, Edward M Vital¹ and Paul Emery¹, ¹Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom, ²University of Leeds, Leeds, United Kingdom, ³Rheumatology Department, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
Background/Purpose: There are concerns regarding the safety of rituximab (RTX) during the COVID-19 pandemic due its effect on humoral immunity. Data from registries during pre-vaccination…
Abstract Number: 2027 • ACR Convergence 2022
Labial and Parotid Salivary Gland Histopathology in Primary Sjögren’s Syndrome
Uzma Nakshbandi¹, Martha S. van Ginkel¹, Silvia Liefers², Hendrika Bootsma², Fred Spijkervet², Arjan Vissink¹, Bert van der Vegt¹ and Frans Kroese², ¹University Medical Center Groningen, University of Groningen, Groningen, Netherlands, ²University Medical Center Groningen, Groningen, Netherlands
Background/Purpose: Salivary gland involvement is a hallmark of disease in primary Sjögren's syndrome (pSS). This is reflected by the prominent role of a positive biopsy…
Abstract Number: 0152 • ACR Convergence 2022
Pm/Scl Patients Have an Expanded Population of CD19+CD21lo/negCD11c+CD11b+ Cells Expressing a Monocyte, Not B Cell, Transcriptome
Erin Wilfong, Leslie Crofford and Rachel Bonami, Vanderbilt University Medical Center, Nashville, TN
Background/Purpose: CD19 is considered a canonical B cell lineage marker. Previously, we have reported that CD19+CD21lo/negCD11c+ cells were increased in both systemic sclerosis [PMC8828801] as…
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…

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