Abstracts tagged "Anti-citrullinated Protein Autoantibodies (ACPAs)"

Abstract Number: 0464 • ACR Convergence 2024
Increases in Paraoxonase-1 Activity over Time Associates with Reduced Risk of Incident Inflammatory Arthritis in an Anti-Citrullinated Protein Antibody-Positive Population
Amir Razmjou¹, Rong Guo², David Elashoff³, Kevin Deane⁴, Jill Norris⁵, Marie Feser⁶, Jennifer Wang¹, Ani Shahbazian² and christina Charles-Schoeman⁷, ¹UCLA, Los Angeles, CA, ²UCLA, Los Angeles, ³UCLA Department of Medicine Statistics Core, Los Angeles, ⁴University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ⁵Colorado School of Public Health, Denver, CO, ⁶Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ⁷UCLA Medical Center, Santa Monica, CA
Background/Purpose: Rheumatoid arthritis (RA) has a well described pre-clinical state, with a continuum of genetic and environmental risk factors leading to the development of systemic…
Abstract Number: 0498 • ACR Convergence 2024
ACPA Subtypes, RF Isotypes, and the Risk of Rheumatoid Arthritis-Associated Interstitial Lung Disease
Jacob Welch¹, Yangyuna Yang¹, Joshua Baker², Katherine Wysham³, Dana Ascherman⁴, Paul Monach⁵, Gail Kerr⁶, Andreas Reimold⁷, grant Cannon⁸, Gary Kunkel⁹, William Robinson¹⁰, Michael Duryee¹, Geoffrey Thiele¹, Ted Mikuls¹ and Bryant England¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Pennsylvania, Philadelphia, PA, ³VA PUGET SOUND/UNIVERSITY OF WASHINGTON, Seattle, WA, ⁴Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA, ⁵VA Boston Healthcare System, Boston, MA, ⁶Washington DC VAMC/Georgetown and Howard Universities, Washington, DC, ⁷Dallas VA Medical Center, Dallas, TX, ⁸University of Utah and Salt Lake City VA, Salt Lake City, UT, ⁹University of Utah and George E Wahlen VAMC, Salt Lake City, UT, ¹⁰Stanford University, Palo Alto, CA
Background/Purpose: Interstitial lung disease (ILD) is among the most significant extra-articular manifestations of rheumatoid arthritis (RA), clinically affecting 8-15% of RA patients, and accounting for…
Abstract Number: 0873 • ACR Convergence 2024
Epigenetic Control of Pathogenic CD4 T Cell Polarization During Progression to Rheumatoid Arthritis (RA)
Ziyuan He¹, Pravina Venkatesan¹, Adam Savage¹, Marla Glass¹, Lauren Okada², Upaasana Krishnan², Christy Bennett¹, Nhung Tran², Yudong He², Samir Rachid Zaim¹, Padmapriyadarshini Ravisankar², Jessica Garber², Palak Genge², Kevin Lee², Regina Mettey², Cole Phalen², Sugandhika Khosa², Marie Feser³, Fan Zhang⁴, David Boyle⁵, Kristine Kuhn⁴, Kristen Demoruelle⁶, Cate Speake⁷, Jane Buckner⁸, Ananda Goldrath¹, Thomas Bumol⁹, V. Michael Holers¹⁰, Peter Skene¹, Gary Firestein¹¹, Xiaojun Li¹, Kevin Deane¹², Troy Torgerson¹³ and Mark Gillespie¹, ¹Allen Institute for Immunology, Seattle, WA, ²Allen Institute for Immunology, Seattle, ³Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ⁴University of Colorado, Aurora, CO, ⁵UCSD, La Jolla, CA, ⁶University of Colorado Anschutz Medical Campus, Golden, CO, ⁷Benaroya Research Institute at Virginia Mason, Seattle, ⁸Benaroya Research Institute, Seattle, WA, ⁹Allen Institute for Immunology, San Diego, CA, ¹⁰University of Colorado, Denver, CO, ¹¹University of California, San Diego, San Diego, CA, ¹²University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ¹³Allen Institute for Immunology, Enumclaw, WA
Background/Purpose: Multiple T cell subsets, including Th1, Th17 cells, and Tfh/Tph, contribute to rheumatoid arthritis (RA) pathology. Clinical trials have shown efficacy of T cell…
Abstract Number: 0933 • ACR Convergence 2024
NLRP3 Inflammasome Promotes Release of Peptidyl Arginine Deiminases2 and 4 from Human Neutrophils
Teneema Kuriakose, Mingxin Yang, Lacie Scaletta and Gary Sims, Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD
Background/Purpose: Autoantibodies targeting citrullinated proteins (ACPAs) are a characteristic feature and a diagnostic marker in rheumatoid arthritis (RA). The generation of citrullinated protein autoantigens is…
Abstract Number: 1349 • ACR Convergence 2024
Two Composite Cytokine Scores Predict Flare and Drug-free Remission in Patients with Rheumatoid Arthritis
Jasmine Sim¹, Nandhini Ramamoorthi², Fiona Rayner³, Abbie Degnan¹, Imogen Wilson¹, Julie Diboll¹, Anna Guttman⁴, Andrew Melville⁵, Nisha Rathore², Stefan Siebert⁵, Iain McInnes⁶, Carl Goodyear⁵, Catharien Hilkens¹, Andrew Filer⁷, Karim Raza⁷, Christopher Buckley⁸, Arthur Pratt¹, James Wason⁹, Amy Anderson¹, Michael Townsend², Kenneth Baker¹ and John Isaacs¹, ¹Translational and Clinical Research Institute, NIHR Newcastle Biomedical Research Centre, Newcastle University and The Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom, ²Genentech, South San Francisco, CA, ³Translational and Clinical Research Institute, NIHR Newcastle Biomedical Research Centre, Newcastle University and The Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, England, United Kingdom, ⁴Genentech, South San Franscisco, CA, ⁵School of Infection and Immunity, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom, ⁶University of Glasgow, College of Medical Veterinary and Life Sciences, Glasgow, United Kingdom, ⁷Rheumatology Research Group, Institute for Inflammation and Ageing, NIHR Birmingham Biomedical Research Center and Clinical Research Facility, University of Birmingham, Birmingham, United Kingdom, ⁸Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom, ⁹Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
Background/Purpose: Recent studies show that half of patients with RA remission can stop conventional synthetic disease-modifying anti-rheumatic drug (csDMARD) therapy to achieve drug-free remission (DFR),…
Abstract Number: 0423 • ACR Convergence 2023
Detection of Citrullinated Proteins Recognized by a Novel Chimeric Antigen Receptor TregTherapy in Both Synovial Fluid and Serum from Patients with Rheumatoid Arthritis
Sara Charmsaz¹, Jeff Tracy¹, Elizabeth Whalen¹, John Bui¹, Anne-Renee van der Vuurst de Vries¹, Vivianne Malmström² and Michelle Blake¹, ¹Sonoma Biotherapeutics, Seattle, WA, ²Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Rheumatoid arthritis (RA) is one of the most common autoimmune diseases and despite many therapeutic options, an unmet medical need persists for novel therapies…
Abstract Number: 2582 • ACR Convergence 2023
Expansion of Circulating HLA-DR+ Peripheral Helper T Cells and CXCR5−CD38+ Mature Naïve B Cells in ACPA-positive Individuals At-risk for and with Classified RA
Hideto Takada¹, Kristen Demoruelle¹, Kevin Deane¹, Shohei Nakamura², Yasuhiro Katsumata³, Katsunori Ikari², Jane Buckner⁴, William H. Robinson⁵, Jennifer Seifert¹, Marie Feser¹, LauraKay Moss¹, Jill Norri⁶, Masayoshi Harigai³, Elena Hsieh¹, Michael Holer¹ and Yuko Okamoto², ¹University of Colorado Anschutz Medical Campus, Aurora, CO, ²Tokyo Women's Medical University School of Medicine, Tokyo, Japan, ³Tokyo Women's Medical University, Division of Rheumatology, Department of Internal Medicine, Tokyo, Japan, ⁴Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁵Stanford University, Palo Alto, CA, ⁶Colorado School of Public Health, Denver, CO

Background/Purpose: Production of ACPA following T and B cell interactions is a hallmark of ACPA+ RA. Recently identified peripheral helper T (Tph) cells have B…
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: 2583 • ACR Convergence 2023
A Predictive Model for Progression to Clinical Arthritis Based on Lymphocyte Subsets and ACPA in At-risk Individuals with Arthralgia
Klára Prajzlerová¹, Olga Kryštůfková², Nikola Kaspříková³, Nora Růžičková², Hana Hulejová¹, Petra Hánová¹, Jiri Vencovsky⁴, Ladislav Senolt⁵ and Maria Filkova², ¹Institute of Rheumatology, Prague, Czech Republic, ²Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ³Faculty of Informatics and Statistics, Prague University of Economics and Business, Prague, Czech Republic, ⁴Institute of Rheumatology, Prague, Czech Republic, Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, ⁵Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Praha, Czech Republic
Background/Purpose: The positivity of antibodies against citrullinated proteins (ACPA) substantially increases the risk of developing rheumatoid arthritis (RA). The definition of individuals with arthralgia at…
Abstract Number: 1139 • ACR Convergence 2023
From Skin to Bone Lesions: A Pioneer Study Unraveling the Underdiagnosis of SAPHO Syndrome in the Dominican Republic
Leeany Maletta¹, Diana Jimenez² and Rosanna de Jesus³, ¹UNIBE School of Medicine, San Antonio, TX, ²UNIBE School of Medicine, Miami, FL, ³Hospital General Plaza de la Salud, Distrito Nacional, Dominican Republic
Background/Purpose: SAPHO syndrome is a rare chronic inflammatory condition that affects the skin and osteoarticular structures. Despite being first described over 30 years ago, it…
Abstract Number: 1727 • ACR Convergence 2023
Arthritogenicity of Homocitrullinated Peptides in HLA-DRB1 Transgenic Mice
Sheri Saunders, Garth Blackler, Patti Kiser, Ewa Cairns and Lillian Barra, Western University, London, ON, Canada
Background/Purpose: Most rheumatoid arthritis (RA) patients express autoantibodies to post-translationally modified antigens, including citrullinated and homocitrullinated (also known as carbamylated) peptides. Homocitrulline and citrulline are…
Abstract Number: 1728 • ACR Convergence 2023
A Novel Animal Model for Investigating the Effect of HLA-DRB1 on Atherosclerosis
Garth Blackler, James Akingbasote, Patti Kiser, Christopher Howlett, Ewa Cairns and Lillian Barra, Western University, London, ON, Canada
Background/Purpose: HLA-DRB1 alleles are associated with various autoimmune and inflammatory conditions, including rheumatoid arthritis, polymyalgia rheumatica, giant cell arteritis, systemic lupus erythematosus, diabetes and atherosclerotic…
Abstract Number: 1737 • ACR Convergence 2023
ACPA, Anti-CarP and AAPA Can Be Detected in Saliva, but Not in Feces of Seropositive Rheumatoid Arthritis Patients – Support for Mucosal Involvement in Specific Locations in RA
Veerle Derksen¹, Klara Martinsson², René Toes¹, Daniel Sjöberg³, Thomas Huizinga¹, Alf Kastbom⁴, Anna Svärd³ and Diane van der Woude¹, ¹Leiden University Medical Center, Leiden, Netherlands, ²Linköping University, Linköping, Sweden, ³Centre for Clinical Research Dalarna, Uppsala, Sweden, ⁴Linköping University, Stockholm, Sweden
Background/Purpose: Rheumatoid arthritis (RA) patients harbor antibodies against several post-translational modifications (AMPA), for example anti-citrullinated protein antibodies (ACPA), anti-carbamylated antibodies (anti-CarP) and anti-acetylated protein antibodies…
Abstract Number: 1742 • ACR Convergence 2023
Sputum Citrullinated Proteins and Sputum Anti-Cit-S100A8/A9 IgG Antibodies Are Increased in Serum Anti-CCP-IgG Positive Individuals Who Developed RA
Rachna Talluri¹, Sudeshna Sen², Timothy Wilson³, Adam Savage⁴, Mark Gillespie⁴, Tom Bumol⁴, Marie Feser¹, Jill Norri⁵, Michael Holer¹, kevin Deane¹, Paul Thompson² and Kristen Demoruelle¹, ¹University of Colorado Anschutz Medical Campus, Aurora, CO, ²University of Massachusetts Chan Medical School, Worcester, MA, ³Thomas Jefferson University, Philadelphia, PA, ⁴Allen Institute for Immunology, Seattle, WA, ⁵Colorado School of Public Health, Denver, CO
Background/Purpose: The presence of anti-CCP-IgG in the blood identifies individuals who are "at-risk" of developing RA. Our group has reported that in a cohort of…
Abstract Number: 1748 • ACR Convergence 2023
Macrophage Extracellular Traps Require Peptidylarginine Deiminase 2 and 4 and Are a Source of Citrullinated Antigens Bound by Rheumatoid Arthritis Autoantibodies
S Janna Bashar, Caitlyn Holmes and Miriam Shelef, University of Wisconsin, Madison, WI
Background/Purpose: Anti-citrullinated protein antibodies (ACPAs) are a hallmark of rheumatoid arthritis, but the sources of citrullinated antigens as well as which peptidylarginine deiminases (PADs) are…

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