Abstracts tagged "B-Cell Targets"

Abstract Number: 1083 • ACR Convergence 2022
Treatment of ANCA-associated Vasculitis with Extreme Impairment of Renal Function: A Case-Control Study Comparing an Intensive B Cell Depletion Regimen with the Standard of Care Using Oral Cyclophosphamide
Dario Roccatello¹, Savino Sciascia², Stefano Murgia¹, Giacomo Quattrocchio¹, Michela Ferro¹, Emanuele De Simone¹, Carla Naretto¹, Antonella Barreca¹, Daniela Rossi¹, Vittorio Modena¹ and Roberta Fenoglio¹, ¹University of Turin, Turin, Italy, ²University of Turin, Torino, Italy
Background/Purpose: Rituximab (RTX), an anti-CD20 monoclonal antibody, has shown to be an effective induction treatment for small-vessel vasculitis associated with antineutrophil cytoplasm antibodies (AAV) in…
Abstract Number: 1084 • ACR Convergence 2022
Rituximab versus Cyclophosphamide for Induction Therapy in Granulomatosis with Polyangiitis: A Target Trial Emulation Study
Xavier Puéchal¹, Michele Iudici², Elodie Perrodeau³, bernard bonnotte⁴, Francois Lifermann⁵, Thomas Le Gallou⁶, Alexandre Karras⁷, Claire Blanchard-Delaunay⁸, Thomas Quéméneur⁹, Achille Aouba¹⁰, Olivier Aumaître¹¹, Vincent Cottin¹², Mohamed Hamidou¹³, Marc Ruivard¹¹, Pascal Cohen¹, Luc Mouthon¹, Loïc Guillevin¹, Philippe Ravaud³, Raphaël Porcher³ and Benjamin Terrier¹, ¹National Referral Center for Rare Systemic Autoimmune Diseases, Cochin Hospital, Paris, France, ²Division of Rheumatology, Geneva University Hospitals, Geneva, Switzerland, ³Université Paris Cité, Hôtel-Dieu, Paris, France, ⁴Centre Hospitalo-Universitaire de Dijon, Dijon, France, ⁵Dax Hospital, Dax, France, ⁶Rennes Sud University Hospital, Rennes, France, ⁷HEGP, Paris, France, ⁸Niort Hospital, Niort, France, ⁹Valenciennes Hospital, Valenciennes, France, ¹⁰Department of Internal Medicine, UR4650 PSIR, Normandie Univ, UNICAEN, CHU de Caen Normandie, Caen, France, ¹¹Clermont Ferrand University Hospital, Clermont-Ferrand, France, ¹²Coordinating Reference Center for Rare Pulmonary Diseases, Louis Pradel Hospital, University of Lyon, INRAE, Lyon, France, ¹³Nantes University Hospital, Nantes, France
Background/Purpose: Randomized controlled trials showed rituximab (RTX)'s non-inferiority to cyclophosphamide (CYC) for induction therapy of ANCA-associated vasculitis and neither treatment was favoured in granulomatosis with…
Abstract Number: 0008 • ACR Convergence 2022
CD11c+ T-Bet+ B Cells Traffic to Human Bone Marrow
Jennifer Barnas¹, Diana Alzamareh², Nida Meednu² and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical Center, Rochester, NY
Background/Purpose: CD11c+ age/autoimmunity-associated B cells (ABC) are associated with autoantibody producing cells and disease flare in systemic lupus erythematosus. ABC were initially identified in aged…
Abstract Number: 1374 • ACR Convergence 2022
Real-World Effectiveness and Steroid Sparing Effect of Belimumab in Pediatric Lupus: A Single Center Retrospective Study
Jordan Roberts¹, Mindy Lo¹, Rebecca Sadun², Emily Smitherman³, Scott Wenderfer⁴ and Mary Beth F. Son¹, ¹Division of Immunology, Boston Children's Hospital, Boston, MA, ²Duke University, Durham, NC, ³University of Alabama at Birmingham, Birmingham, AL, ⁴British Columbia Children's Hospital, Vancouver, BC, Canada
Background/Purpose: Belimumab is the only targeted therapy approved for pediatric systemic lupus erythematosus (pSLE), although use remains limited in children. While clinical trials and studies…
Abstract Number: 0009 • ACR Convergence 2022
Pharmacokinetics, Receptor Occupancy, and Pharmacodynamics of Obexelimab Following Intravenous Administration in Adult Healthy Volunteers and in Patients with Rheumatoid Arthritis
Xiaodong Wang, Mark Matijevic, Allen Poma, Shauna Quinn, Minggeng Gao, Lisa Crockett, Jessica Karnes, Keith Wilcoxen and Hua Mu, Zenas BioPharma, Waltham
Background/Purpose: Obexelimab is a novel bifunctional antibody that inhibits B-cell, CD19 expressing plasma cell, and plasmablast activity and is expected to provide clinical benefit across…
Abstract Number: 1428 • ACR Convergence 2022
Molecular and Clinical Profiling of Rheumatoid Arthritis Patients Predicts the Response to Rituximab
Daniel Toro-Domínguez¹, José Linares-Blanco¹, Raúl López-Domínguez², Pilar S. López-Garrido², Georgina Galicia-Rosas¹, Pedro Carmona-Sáez² and Marta Alarcon-Riquelme¹, ¹Center for Genomics and Oncological Research (GENYO), Granada, Spain, ²University of Granada, Granada, Spain
Background/Purpose: Rheumatoid arthritis (RA) is one of the most prevalent rheumatic diseases, mainly characterized by chronically painful, swollen joints that can severely impair physical function…
Abstract Number: 0045 • ACR Convergence 2022
Rheumatoid Arthritis Patient-derived Anti-citrullinated Protein Antibodies (ACPAs) Ameliorate Joint Inflammation in Early Collagen-antibody Induced Arthritis (CAIA)
Alejandro Gomez¹, Camille Brewer¹, Jae-Seung Moon², Suman Acharya¹, Tobias V. Lanz¹, Qian Wang¹, Gundula Min-Oo³, Anita Niedziela-Majka³ and William Robinson⁴, ¹Stanford University, Stanford, CA, ²Stanford University, Palo Alto, CA, ³Gilead Sciences, Foster City, CA, ⁴Stanford University School of Medicine, Palo Alto, CA
Background/Purpose: ACPAs are present in two-thirds of patients with rheumatoid arthritis (RA) and are associated with higher risks for severe bone erosions. The pathogenic role…
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…

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