Abstracts tagged "B-Cell Targets"

Abstract Number: 1572 • ACR Convergence 2022
CD40, BLK and BANK1 in the Pathogenesis of Immunoglobulin-A Vasculitis
Fernanda Genre¹, Sara Remuzgo-Martinez¹, Veronica Pulito-Cueto¹, JOAO CARLOS BATISTA LIZ², Diana Prieto-Peña¹, Belén Atienza-Mateo¹, Belén Sevilla-Pérez³, Javier Llorca⁴, Norberto Ortego⁵, María Teresa Leonardo⁶, Ana Peñalba⁶, F. Javier Narváez⁷, Luis Martín-Penagos⁸, Emilio Rodrigo⁸, Cristina Gomez-Fernandez⁹, Lara Belmar-Vega⁸, José A. Miranda-Filloy¹⁰, Luis Caminal-Montero¹¹, Paz Collado¹², Pedro Rodriguez-Jimenez¹³, Diego De Argila¹⁴, Patricia Quiroga-Colina¹⁵, Esther Vicente-Rabaneda¹⁶, Enrique Rubio¹⁷, Manuel León Luque¹⁷, Juan María Blanco-Madrigal¹⁸, Eva Galíndez-Agirregoikoa¹⁹, Javier Martín²⁰, Santos Castañeda¹⁶, Ricardo Blanco²¹, Miguel Ángel González-Gay²² and Raquel Lopez Mejias²³, ¹Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and in Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL; and Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ²Ilerna, Madrid, Spain, ³Division of Pediatrics, Hospital Universitario San Cecilio, Granada, Spain, ⁴Department of Epidemiology and Computational Biology, School of Medicine, University of Cantabria, and CIBER Epidemiología y Salud Pública (CIBERESP), Santander, Spain, ⁵Medicine Department, Universidad de Granada, Granada, Spain, ⁶Division of Pediatrics, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁷Rheumatology Department, Hospital Universitario de Bellvitge, Barcelona, Spain, ⁸Division of Nephrology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁹Division of Dermatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ¹⁰Division of Rheumatology, Hospital Universitario Lucus Augusti, Lugo, Spain, ¹¹Division of Rheumatology, Hospital Universitario Central de Asturias, Oviedo, Spain, ¹²Division of Rheumatology, Hospital Universitario Severo Ochoa, Madrid, Spain, ¹³Dermatology Department, Hospital Universitario de La Princesa, Madrid, ¹⁴Dermatology Department, Hospital Universitario de La Princesa, Madrid, Spain, ¹⁵Division of Rheumatology, Hospital Universitario de La Princesa, Madrid, Spain, ¹⁶Division of Rheumatology, Hospital Universitario de La Princesa, IIS-Princesa, Madrid, Spain, ¹⁷Division of Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain, ¹⁸Division of Rheumatology, Hospital Universitario de Basurto, Bilbao, Spain, ¹⁹Basurto University Hospital, Bilbao, Spain, ²⁰Instituto de Parasitología y Biomedicina ‘López-Neyra’, CSIC, PTS Granada, Granada, Spain, ²¹Hospital Universitario Marqués de Valdecilla, IDIVAL, Santander, Spain, ²²Department of Medicine and Psychiatry, Universidad de Cantabria; Rheumatology Division, Hospital Universitario Marqués de Valdecilla; Research group on genetic epidemiology and atherosclerosis in systemic diseases and in metabolic diseases of the musculoskeletal system, IDIVAL, Santander, Spain. Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa, ²³IDIVAL, Santander, Spain
Background/Purpose: CD40 is a membrane glycoprotein expressed on B cells surface that activates antigen presenting cells [1]. BLK and BANK1 are components of B cells…
Abstract Number: 0335 • ACR Convergence 2022
Multiplexed Mass Cytometry of Cutaneous Lupus Erythematosus and Dermatomyositis Skin: An In-depth B Cell Directed Immunoprofile
Mariko Ogawa-Momohara¹, Thomas Vazquez², Meena Sharma², Josh Dan³, Grant Sprow³ and Victoria Werth³, ¹Nagoya University Graduate School of Medicine, Nagoya, Japan, ²Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, ³Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
Background/Purpose: Cutaneous lupus erythematosus (CLE) and dermatomyositis (DM) are both characterized histologically by interface dermatitis with a perivascular and periadnexal lymphocytic infiltrate, requiring clinical correlation…
Abstract Number: 1629 • ACR Convergence 2022
AUR200: An Improved BAFF/APRIL Inhibitor with Increased Potency and Safety for the Treatment of B Cell-Mediated Diseases
Shawn Morales, Jennifer Cross and Robert Huizinga, Aurinia Pharmaceuticals, Inc., Victoria, BC, Canada
Background/Purpose: AUR200 targets both B cell activating factor (BAFF) and a proliferation-inducing ligand (APRIL), which are key mediators in the pathogenesis of B cell-mediated autoimmune…
Abstract Number: 0351 • ACR Convergence 2022
The Effect of Belimumab to Achieve Low Disease Activity or Remission Based on SLE-DAS in Systemic Lupus Erythematosus: A Single-center Retrospective Study
Yasuhiro Hasegawa¹, Yoshiyuki Arinuma², Yu Matsueda¹, Kenji Oku³ and Kunihiro Yamaoka⁴, ¹Kitasato University School of Medicine, Sagamihara, Japan, ²Kitasato University, Kanagawa, Japan, ³Kitasato University, Chigasaki, Japan, ⁴Department of Rheumatology and Infectious Diseases, Kitasato University School of Medicine, Kanagawa, Japan
Background/Purpose: Low disease activity (LDA) and remission in patients with systemic lupus erythematosus (SLE) can reduce organ damage accrual and improve prognosis. We investigated the…
Abstract Number: 1631 • ACR Convergence 2022
Phospholipase D 4 Is a Novel Surface Marker of a Distinctive B Cell Population Overlapping with Double Negative 2 B Cells
Ken Yasaka¹, Tomohide Yamazaki², Hiroko Sato¹, Tsuyoshi Shirai¹, Hiroshi Fujii¹, Tomonori Ishii³ and Hideo Harigae⁴, ¹Department of Rheumatology, Tohoku University Hospital, Sendai, Japan, ²SBI Biotech, Tokyo, Japan, ³Clinical Research, Innovation and Education Center, Tohoku University Hospital, Sendai, Japan, ⁴Department of Hematology, Tohoku University Hospital, Sendai, Japan
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by various autoantibodies. In particular, targeting autoreactive B cells could be a promising therapy with…
Abstract Number: 0527 • ACR Convergence 2022
Rituximab as Maintenance Therapy for ANCA-associated Vasculitides: Pooled Analysis and Long-term Outcome of MAINRITSAN Trials
Florence Delestre¹, Pierre Charles², Loïc Guillevin³, Raphaël Porcher⁴ and Benjamin Terrier³, ¹cochin Hospital, Paris, France, ²Institut Mutualiste Montsouris, Paris, France, ³National Referral Center for Rare Systemic Autoimmune Diseases, Cochin Hospital, Paris, France, ⁴Université Paris Cité, Hôtel-Dieu, Paris, France
Background/Purpose: Maintenance therapy after induction of remission has been shown to reduce relapse rate and mortality in anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis. The three MAINRITSAN…
Abstract Number: 1632 • ACR Convergence 2022
Novel Autoantibodies Identify Sjögren’s Disease in Patients Lacking Serum IgG Specific for Ro/SS-A and La/SS-B
Sherri Longobardi¹, Charmaine Lopez-Davis¹, Bhuwan Khatri¹, Constantin Georgescu¹, Christina Lawrence¹, Astrid Rasmussen¹, Lida Radfar², R. Hal Scofield², Robert C. Axtell¹, Gabriel Pardo¹, Jonathan Wren¹, Kristi A Koelsch¹, Joel Guthridge¹, Judith James¹, Christopher Lessard¹ and A. Darise Farris¹, ¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²University of Oklahoma Health Sciences Center, Oklahoma City, OK
Background/Purpose: Classification of Sjögren's disease (SjD) requires either Ro/SS-A autoantibodies or minor salivary gland biopsy positive for focal lymphocytic infiltrates. Up to 40% of SjD…
Abstract Number: 0624 • ACR Convergence 2022
CD20+ T Cells in the Synovial Fluid of Patients with Rheumatoid Arthritis Suggest a Role for Trogocytosis in Disease Pathogenesis and Activity
Maria De Santis¹, Natasa Isailovic², Giacomo Maria Guidelli³, Daniela Renna⁴, Arianna Sonaglia³, Nicoletta Luciano³, Marta Caprioli⁵, Angela Ceribelli¹, Francesca Motta⁶, Matteo Vecellio¹, Enrico Brunetta³ and Carlo Selmi¹, ¹Humanitas University, IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pieve Emanuele, Italy, ²IRCCS Humanitas Research Hospital, Rozzano (MI), Italy, Rozzano, Italy, ³IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Rozzano, Italy, ⁴IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Milano, Italy, ⁵IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Pavia, Italy, ⁶Humanitas University, IRCCS Humanitas Research Hospital, Rheumatology and Clinical Immunology, Rozzano, Italy
Background/Purpose: Approximately 1-2% of peripheral blood T cells express CD20, a marker of the B lineage, in both healthy individuals and patients with rheumatoid arthritis…
Abstract Number: 1677 • ACR Convergence 2022
Chimeric Autoantigen-T Cell Receptor (CATCR)-T Cell Therapies to Selectively Target Autoreactive B Cells
Brian J. Mog¹, Elana R. Shaw¹, Michael S. Hwang¹, Alexander H. Pearlman¹, Sarah R. DiNapoli¹, Suman Paul¹, Chetan Bettegowda¹, Nickolas Papadopoulos¹, Sandra B. Gabelli¹, Michelle Petri², Antony Rosen¹, Shibin Zhou¹, Kenneth W. Kinzler¹, Bert Vogelstein¹ and Maximilian F. Konig¹, ¹The Johns Hopkins University School of Medicine, Baltimore, MD, ²Johns Hopkins University School of Medicine, Division of Rheumatology, Baltimore, MD
Background/Purpose: Chimeric antigen receptor (CAR)-T cell therapies have revolutionized the treatment of cancer and can be curative. CD19-targeted CAR-T cells hold promise for the treatment…
Abstract Number: 0644 • ACR Convergence 2022
Long-lived Plasma Cells in the Lupus Bone Marrow Are Imprinted by Interferon
Jennifer Barnas¹, Diana Alzamareh², Neha Nandedkar-Kulkarni², Jennifer Albrecht², Nida Meednu², Cameron Baker², Andrew McDavid¹ and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical Center, Rochester, NY
Background/Purpose: Systemic lupus erythematous (SLE) is a complex autoimmune disorder with heterogeneous disease presentation and a multi-pronged pathogenesis. Although autoreactive plasma cells (PC) play a…
Abstract Number: 1869 • ACR Convergence 2022
Looking for BlyS(BAFF) in Juvenile Dermatomyositis: A New Biomarker of Disease Activity
Christopher Costin¹, Gabrielle Morgan², Amer Khojah³ and Lauren Pachman⁴, ¹Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ²Ann & Robert H. Lurie Children's Hospital of Chicago and Northwestern University Feinberg School of Medicine, Chicago, IL, ³Umm Al-Qura University, Makkah, Saudi Arabia, ⁴Northwestern's Feinberg School of Medicine. Ann and Robert H. Lurie Children's Hospital of Chicago; Stanley Manne Children's Research Institute of Chicago, Lake Forest, IL
Background/Purpose: B Cell Activating Factor (BAFF) is a cytokine that drives B Cell proliferation and maturation. B Cells remain an important factor in JDM immune…
Abstract Number: 0720 • ACR Convergence 2022
Risk-Benefit Assessment of Primary Prophylaxis for Pneumocystis Pneumonia in Patents with Rheumatic Diseases Exposed to Rituximab: A Multicenter Cohort Study
Jun Won Park¹, Jeffrey Curtis², Min Jung Kim³, You-Jung Ha⁴, Yun Jong Lee⁴ and Eun Bong Lee¹, ¹Seoul National University Hospital, Seoul, Republic of Korea, ²Division of Clinical Immunology & Rheumatology, University of Alabama at Birmingham, Birmingham, AL, ³Seoul Metropolitan Government Boramae Medical center, Dongjak-gu, Seoul, Republic of Korea, ⁴Seoul National University Bundang Hospital, Seongnam, Republic of Korea
Background/Purpose: Although previous studies suggested that primary prophylaxis for pneumocystis pneumonia (PJP) during rituximab treatment could be beneficial, it is uncertain whether this strategy should…
Abstract Number: 1872 • ACR Convergence 2022
Outcome of Idiopathic Inflammatory Myositis Patients Who Received Rituximab: A Single Centre Retrospective Study
Fahidah Alenzi¹, Shirish Sangle² and Sanna Giovanni², ¹Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia, ²Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
Background/Purpose: Idiopathic inflammatory myositis (IIM) includes a spectrum of a rare autoimmune disease characterized by proximal muscle weakness, variable skin manifestation and extra muscular manifestations.…
Abstract Number: 0754 • ACR Convergence 2022
Persistent but Disturbed Germinal Center Reaction Among 3rd SARS-CoV-2 Vaccination After Rituximab Exposure
Ana-Luisa Stefanski¹, Hector Rincon-Arevalo¹, Eva Schrezenmeier², Franziska Szelinski¹, Jacob Ritter³, Yidan Chen¹, Christian Meisel⁴, Hubert Schrezenmeier⁵, Andreia C. Lino⁶ and Thomas Dörner¹, ¹Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany, ²Department of Nephrology and Medical Intensive Care, Charité Universitätsmedizin Berlin; DRFZ Berlin; Berlin Institute of Health Charité Universitätsmedizin Berlin, Berlin, Germany, ³Department of Rheumatology and Clinical Immunology, Berlin Institute of Health Charité Universitätsmedizin Berlin, Berlin, Germany, ⁴Department of Medical Immunology, Charité University Medicine and Labor Berlin-Charité Vivantes, Berlin, Germany, ⁵Institute of Transfusion Medicine, Ulm University, Ulm, Germany and Institute for Clinical Transfusion Medicine and Immunogenetics, German Red Cross Blood Transfusion Service Baden-Württemberg – Hessen and University Hospital Ulm, Ulm, Germany, ⁶Deutsches Rheuma-Forschungszentrum Berlin, Berlin, Germany
Background/Purpose: Durable vaccine-mediated immunity relies on the generation of long-lived plasma cells and memory B cells (MBCs), differentiating upon germinal center (GC) reactions. SARS-CoV-2 mRNA…
Abstract Number: 2037 • ACR Convergence 2022
Childhood-onset Sjögren’s Syndrome Is Characterised by Dysregulated of B and T Memory Cell Frequencies: A Pilot Immunophenotyping Analysis of This Rare Disease Phenotype
Lucia Martin-Gutierrez¹, Hannah Peckham², Anna Radziszewska², Junjie Peng², Oluwatomisin Nettey², Elizabeth Jury³ and Coziana Ciurtin⁴, ¹Centre for Rheumatology Research, Department of Medicine,University College London, London, ²Centre for Adolescent Rheumatology Versus Arthritis, Department of Medicine, University College London, London, ³University College London, London, United Kingdom, ⁴Centre for Adolescent Rheumatology Versus Arthritis, Department of Medicine, University College London, London, United Kingdom
Background/Purpose: Sjögren's syndrome (SS) is an autoimmune rheumatic disease characterised by dryness resulting from chronic lymphocytic infiltration of the exocrine glands and extra glandular manifestations…

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