Abstracts tagged "B-Lymphocyte"

Abstract Number: 0577 • ACR Convergence 2023
Analysis of Intracytoplasmic Toll – Like Receptors (TLRs) and MyD88 Expression in B Cell Subsets in Patients with Lupus Nephritis
Michelle Patricia Loeza-Uribe¹, Michelle Nicolle Espinoza-Carranza¹, Yatzil Reyna-Juárez¹, Beatriz Alcalá-Carmona¹, Nancy Raquel Mejía-Domínguez², Guillermo Juárez-Vega², José Luis Maravillas-Montero², Karina Santana-de Anda¹, José Jiram Torres-Ruiz¹ and Diana Gómez-Martín¹, ¹Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico, ²Red de Apoyo a la Investigación, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador Zubirán and Universidad Nacional Autónoma de México, Mexico City, Mexico
Background/Purpose: Intrinsic signaling of intracytoplasmic TLRs (7 and 9) and MyD88 in B cells (BC) plays an important role in the development and pathogenesis of…
Abstract Number: 1813 • ACR Convergence 2023
Assessing Immunogenicity of SARS-CoV-2 Vaccine Neoantigen S1 in Autoimmune Rheumatic Disease Patients: A Study on Cellular and Humoral Responses
Inés Pérez Sancristóbal¹, Maria Paula Alvarez Hernandez¹, kauzar Mohamed Mohamed², Maria Rodriguez Laguna¹, Cristina Martinez³, Esther Toledano³, Dalifer Freites⁴, Benjamin Fernandez¹, María Rodero³, Cecilia Bravo³, Antonia Rodrígez de la Peña⁵, Silvia Sanchez - Ramon⁵, Gloria mato Chain⁶ and Gloria Candelas¹, ¹Hospital Clinico San Carlos, Madrid, Spain, ²Department of Immunology, Hospital Clínico San Carlos, Madrid, Spain, ³Hospital Clinico San Carlos, Rheumatology Deparment, Madrid, Spain, ⁴Hospital Clínico San Carlos, Madrid, Spain, ⁵Department of Clinical Immunology, IML and IdSSC, Hospital Clínico San Carlos, Madrid, Spain, ⁶Department of Preventive Medicine, Hospital Clínico San Carlos, Madrid, Spain
Background/Purpose: Data on cellular and humoral immunogenicity triggered by SARS-CoV-2 vaccines in patients with autoimmune rheumatic diseases (ARD) are limited. While current vaccine efforts have…
Abstract Number: 0589 • ACR Convergence 2023
A Comparative Evaluation of IgA2 Anti-dsDNA Antibodies and Clinical Outcome in Two Clinical Trials of Belimumab After Rituximab in SLE
Muhammad RA Shipa¹, Daniel McCluskey¹, Laura Cooney² and Michael Ehrenstein¹, ¹University College London, London, United Kingdom, ²Immune Tolerance Network, Seattle, WA
Background/Purpose: We have shown that serum IgA2 anti-dsDNA antibody levels is a biomarker of response to belimumab after rituximab in SLE (BEAT-lupus trial) (1). We…
Abstract Number: 2124 • ACR Convergence 2023
Expansion of Atypical B Cells Accompanies Rheumatoid Arthritis-like Immune Dysregulation in ACPA+ At-risk Individuals
Adam Savage¹, Ziyuan He¹, Marla Glass¹, Julian Reading¹, LauraKay Moss², Marie Feser², Vlad Tsaltskan³, Katherine Nguyen Nguyen³, Kristen Demoruelle², kristine Kuhn⁴, David Boyle³, Cate Speake⁵, Xiao-Jun Li¹, Peter Skene¹, Troy Torgerson¹, Tom Bumol¹, V. Michael Holers⁶, Jane Buckner⁷, Gary Firestein⁸, kevin Deane² and Mark Gillespie¹, ¹Allen Institute for Immunology, Seattle, WA, ²University of Colorado Anschutz Medical Campus, Aurora, CO, ³University of California San Diego, La Jolla, CA, ⁴University of Colorado School of Medicine, Aurora, CO, ⁵Benaroya Research Institute, Seattle, WA, ⁶University of Colorado, Denver, CO, ⁷Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁸University of California San Diego, San Diego, CA
Background/Purpose: Seropositive RA is preceded by an at-risk stage characterized by elevated circulating autoantibodies (AAb), including ACPA, in otherwise healthy individuals without clinically-apparent inflammatory arthritis.…
Abstract Number: 0607 • ACR Convergence 2023
CAR T Cell Therapy Leads to Long-term Abrogation of Autoimmunity in SLE Patients While Vaccination Responses Are Maintained
Georg Schett¹, Luis Munoz², Jule Taubmann³, Michael Aigner⁴, Christina Bergmann⁵, Johannes Knitza⁶, Gerhard Kroenke⁷, Dagmar Werner², Fabian Müller⁸ and Andreas Mackensen⁴, ¹Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ²FAU Erlangen-Nürnberg, Erlangen, Germany, ³Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ⁴Department of Internal Medicine 5, Hematology and Oncology, Universitätsklinikum Erlangen and Friedrich-Alexander-Universität Erlangen Nürnberg, Erlangen, Germany, ⁵Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, ⁶Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg, University Hospital Erlangen, Erlangen, Germany, ⁷Charite Berlin, Berlin, Germany, ⁸Friedrich Alexander Universität Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
Background/Purpose: We have previously shown that CD19 CAR T cell therapy leads to stable drug-free remission of treatment-resistant SLE (1,2). Based on these findings we…
Abstract Number: 2189 • ACR Convergence 2023
Lymphopenia Fluctuation Patterns Determine the Trajectory of the Disease in Sjogren’s Patients with Hematological Involvement
Giovanni Fulvio¹, Matilde Bandeira², Augusto Silva³, Gaetano La Rocca⁴, Silvia Fonzetti⁵, Francesco Ferro⁶, Marta Mosca⁷, Vasco Romão², Chiara Baldini¹, Manuel Silvério-António⁸ and Nikita Khmelinskii², ¹University of Pisa, Pisa, Italy, ²Centro Hospitalar Universitário Lisboa Norte, Lisboa, Portugal, ³Santa Maria Hospital, Maceira, Portugal, ⁴University of Pisa, Rheumatology Unit, Pisa, Italy, ⁵AOUP, Pisa, Italy, ⁶Clinical and Experimental Medicine Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy, ⁷Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy, ⁸Hospital Santa Maria, Lisboa, Portugal
Background/Purpose: Sjogren's disease (SjD) is characterized by a moderate prevalence of cytopenia, mainly neutropenia and lymphocytopenia with a typical fluctuating pattern. The associations between clinical…
Abstract Number: 0728 • ACR Convergence 2023
Systemic Lupus Erythematosus B Lymphocyte Responsiveness to Type I and Type III Interferon Is Determined by Donor IFN Status and B Cell Phenotype
Diana Alzamareh, Mary O'Connell, Jennifer Anolik and Jennifer Barnas, University of Rochester Medical Center, Rochester, NY
Background/Purpose: Systemic lupus erythematous (SLE) is a heterogenous autoimmune disorder characterized by pathogenic antinuclear antibodies. An interferon (IFN) gene signature and B cell aberrations are…
Abstract Number: 2341 • ACR Convergence 2023
Spanish National Registry of Belimumab in Patients with Systemic Lupus Erythematosus
María laiño¹, Monica Enguita², Javier Loricera³, Clara Moriano Morales⁴, Carmen Lasa⁵, Vanesa Calvo Río⁶, Javier Narvaez⁷, Pablo Ignacio Navarro Guerra⁸, Ivette Casafont-Sole⁹, Judit Font Urgelles¹⁰, Adela Gallego¹¹, Irene Carrión-Barberà¹², Patricia Quiroga¹³, Santos Castañeda¹³, Angel Garcia-Aparicio¹⁴, Joaquin Maria Belzunegui Otano¹⁵, Juan Ramon De Dios¹⁶, Marta López¹⁷, Samuel Hernandez¹⁸, Sergi Heredia Martin¹⁹, Aaron Fariñas²⁰, Francisco Navarro²¹, Jorge Juan Fragio²², Carmen Escudero²³, Rafaela Ortega Castro²⁴, Leticia del Olmo Perez²⁵, Valvanera Pinillos²⁶, Eztizen Labrador²⁶, Mamen Ortega²⁷, Patricia Castro Pérez²⁷, Juan Maria Blanco-Madrigal²⁸, Marcos Paulino²⁹, María Ángeles Matías³⁰, Enrique Calvo-Aranda³¹, Cilia Peralta³², Silvia García³³, Jordi Camins-Fàbregas³⁴, Marta Garijo Bufort³⁵, Dolores Fabregas³⁶, Ana Urruticoechea³⁷, Miguel Medina Malone³⁸, Piter Jose Cossio Jimenez³⁹, Eva Perez-Pampin⁴⁰, Blanca Varas de Dios⁴¹, Carlos Vazquez Galeano⁴², Nuria Vegas Revenga⁴³, Olga Rusinovich⁴⁴, Emilio Giner-Serret⁴⁵, Jose Ramón lamúa⁴⁶ and Vicente Aldasoro¹, ¹Hospital Universitario de Navarra, Pamplona, Spain, ²Navarrabiomed-Unidad de Metodología, Pamplona, Spain, ³Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁴Rheumatology, Hospital Universitario de León, León, Spain, ⁵Hospital Universitario Marqués de Valdecilla, IDIVAL., La Cavada, Spain, ⁶Valdecilla Hospital, Santander, Spain, ⁷Hospital Universitario de Bellvitge, Barcelona, Spain, ⁸Hospital Universitario Puerta de Hierro de Majadahonda, Madrid, Spain, ⁹Hospital Universitari Germans Trias i Pujol, Badalona, Spain, ¹⁰Hospital Universitario German Trias i Pujol,, Badalona, Spain, ¹¹Complejo Hospitalario Universitario de Badajoz, Badajoz, Spain, ¹²Hospital del Mar, Barcelona, Spain, ¹³Hospital Universitario de la Princesa, Madrid, Spain, ¹⁴Hospital Universitario de Toledo, Toledo, Spain, ¹⁵University Hospital Donostia, Donostia-San Sebasti, Spain, ¹⁶Hospital Universitario Araba, Vitoria, Spain, ¹⁷Hospital Universitario Arava, Pamplona, Spain, ¹⁸Hospital Universitario Son Llatzer, Palma de Mallorca, Spain, ¹⁹Complex Hospitalari Moisès Broggi, Barcelona, Spain, ²⁰Complejo Asistencial Universitario de Palencia, Palencia, Spain, ²¹Doctor. Rheumatology, Alicante, Spain, ²²Hospital General Universitario Valencia, Valencia, Spain, ²³Hospital Universitario de Valme, Sevilla, Spain, ²⁴Hospital Reina Sofía, Cordoba, Spain, ²⁵Hospital Nuestra Señora del Prado, Talavera de la Reina, Spain, ²⁶Hospital Universitario San Pedro, Logroño, Spain, ²⁷Hospital Universitario de Getafe, Getafe, Spain, ²⁸Division of Rheumatology, H. Universitario de Basurto, Bilbao, Spain, ²⁹Hospital General Universitario de Ciudad Real, Ciudad Real, Spain, ³⁰Hospital Universitario Infanta Leonor/Rheumatology Department, Madrid, Spain, ³¹Hospital Universitario Infanta Leonor, Madrid, Spain, ³²Hospital Clínico Lozano Blesa, Zaragoza, Spain, ³³Hospital Parc Taulí, Sabadell, Spain, ³⁴Hospital General de Granollers, Granollers, Spain, ³⁵Hospital de Sagunto, Valencia, Spain, ³⁶Hospital de Barbastro, Barbastro, Spain, ³⁷Hospital Can Misses, Ibiza, Spain, ³⁸Hospital Calahorra, Calahorra, Spain, ³⁹HOSPITAL REINA SOFIA, Tudela, Spain, ⁴⁰Rheumatology Department Complejo Hospitalario Universitario Santiago, Santiago de compostela, Spain, ⁴¹Santa Cristina Universitary Hospital, Madrid, Spain, ⁴²ZARAGOZA, Madrid, Spain, ⁴³Hospital Galdakao- Usansolo, Galdakao, Spain, ⁴⁴Puerta de Hierro University Hospital, Boadilla del Monte, Spain, ⁴⁵Hospital Royo Villanova, Teruel, Spain, ⁴⁶Hospital Universitario del Henares, Alcalá de Henares, Spain
Background/Purpose: Belimumab (BLM) is a monoclonal antibody that inhibits B-lymphocyte stimulating factor (BlyS), approved in 2011 as a treatment for systemic lupus erythematosus (SLE). We…
Abstract Number: 0729 • ACR Convergence 2023
ROCK1 Orchestrates B-cell Differentiation Under Stress
Juan Rivera-Correa¹, Sanjay Gupta¹, Edd Ricker², Danny Flores-Castro¹, Daniel Jenkins¹, Stephen Vulcano¹, Tania Pannellini¹, Matthew Miele³, Zhuoning Li³, Nahuel Zamponi⁴, Young-Bum Kim⁵, Evgenia Giannopoulou¹, Leandro Cerchietti⁴ and Alessandra Pernis¹, ¹Hospital for Special Surgery, New York, NY, ²Columbia University, New York, NY, ³Memorial Sloan Kettering Cancer Center, New York, NY, ⁴Weill Cornell Medicine, New York, NY, ⁵Beth Israel Deaconess Medical Center, Boston, MA
Background/Purpose: The mechanisms utilized by B cells to execute their differentiation programs when exposed to damaging and stressful environments, which often accompany severe infections and…
Abstract Number: 2464 • ACR Convergence 2023
B Cells in Anti-tRNA Synthetase Syndrome Patients Show an Activated, Interferon Responsive Signature
Erin Wilfong¹, Leslie Crofford² and Rachel Bonami¹, ¹Vanderbilt University Medical Center, Nashville, TN, ²Vanderbilt University Medical Center, Melbourne, AR
Background/Purpose: Autoantibodies directed against various tRNA synthetases defines the anti-tRNA synthetase syndrome (ARS). While it is unclear if the autoantibodies are directly pathogenic, the efficacy…
Abstract Number: 0730 • ACR Convergence 2023
NF-κB Signaling Is Critically Important for Functional Responses of ACPA-producing B Cell Clones from Patients with Rheumatoid Arthritis
Giulia Frazzei¹, Jan Piet van Hamburg², Ronald van Vollenhoven² and Sander Tas³, ¹Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands, ²Amsterdam University Medical Centers, Amsterdam, Netherlands, ³Amsterdam UMC, locatie AMC, Utrecht, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) play a role in rheumatoid arthritis (RA) pathogenesis, and their presence is associated with disease severity. Consequently, detailed analysis of…
Abstract Number: 2465 • ACR Convergence 2023
Clonally Expanded B Cells in Anti-Histidyl-tRNA Synthetase Syndrome Patients Exhibit an Autoreactive-Prone Memory Phenotype and Bind Jo-1 Autoantigen
Lindsay Bass¹, Dena Liu¹, Alberto Cisneros², Jennifer Young-Glazer², Leslie Crofford³, Erin Wilfong² and Rachel Bonami², ¹Vanderbilt University, Nashville, TN, ²Vanderbilt University Medical Center, Nashville, TN, ³Vanderbilt University Medical Center, Melbourne, AR
Background/Purpose: Anti-histidyl-tRNA synthetase syndrome (Jo-1 ARS) is defined by the presence of autoantibodies against histidyl tRNA synthetase (Jo-1). Clinically, Jo-1 ARS can involve multiple tissues…
Abstract Number: 0001 • ACR Convergence 2023
Loss of the Complement Regulator CD55 Alters Marginal Zone B Cell Homeostasis
Iris Lee¹, Sonam Verma², Ivana Ling², Christine Pham³ and Peggy Kendall², ¹Washington University in St. Louis, St. Louis, MO, ²Washington University, Saint Louis, MO, ³Washington University, St. Louis, MO
Background/Purpose: Complement and B cells are implicated in the pathophysiology of rheumatoid arthritis, an autoimmune disease characterized by synovial inflammation. Loss of complement regulator CD55…
Abstract Number: 0732 • ACR Convergence 2023
Should Complete B-cell Depletion Be Maintained in Patients Treated Long-term with Rituximab for Rheumatoid Arthritis?
Roba Ghossan¹, Omar AL TABAA², Alice Combier³, Alexia STEELANDT³, Marion THOMAS³, Olivier Fogel³, Corinne MICELI⁴, Anna Molto³ and Jérôme Avouac⁵, ¹COCHIN HOSPITAL, Paris, France, ²APHP / Cochin Hospital, Paris, France, ³HOPITAL COCHIN AP-HP, Service de Rhumatologie, Paris, France, ⁴Université de Paris Cité, HOPITAL COCHIN AP-HP, Service de Rhumatologie, Paris, France, ⁵Service de Rhumatologie, Hôpital Cochin, AP-HP.Centre – Université Paris Cité, Paris, France
Background/Purpose: Complete peripheral B cell depletion has been considered as a relevant indicator of short-term response to rituximab (RTX) in rheumatoid arthritis (RA). The purpose…
Abstract Number: 2466 • ACR Convergence 2023
Monoclonal Anti-MDA5 Autoantibodies Derived from a Patient with Dermatomyositis Target the Hel2i Domain of the MDA5 Protein
Eveline Van Gompel¹, Ragnhild Stålesen², Caroline Grönwall², Annika van Vollenhoven², Lena Israelsson², Ingrid Lundberg³, Vivianne Malmström², Karine Chemin⁴ and Vijay Joshua², ¹Karolinska Institutet - KU Leuven, Leuven, Belgium, ²Karolinska Institutet, Stockholm, Sweden, ³Division of Rheumatology, Department of Medicine, Karolinska Institutet; Department of Gastroenterology, Dermatotology, Rhematology, Karolinska Universitetssjukhuset, Stockholm, Sweden, ⁴Division of Rheumatology, Department of Medicine Solna, Center for Molecular Medicine, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden
Background/Purpose: The strong clinical association between the anti-MDA5 autoantibodies and the development of severe lung disease in patients with dermatomyositis (DM) suggests an active role…

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