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

Abstract Number: 0065 • ACR Convergence 2024
Evidence of Membranolytic Targeting and Intracellular Citrullinationin Neutrophils Isolated from Patients with Rheumatoid Arthritis
Neela Fatemeh Moadab¹, Tal Gazitt², Rayan Najjar¹, Ethan Le¹, J Lee Nelson³, Vijay Joshua⁴, Keith Elkon¹, Caroline Grönwall⁴ and Tomas Mustelin¹, ¹University of Washington, Seattle, WA, ²Carmel Hospital, Haifa, Israel, ³University of Washington and Fred Hutchinson Cancer Center, Seattle, WA, ⁴Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) are diagnostic for rheumatoid arthritis (RA). The antigens recognized by these autoantibodies are produced by protein arginine deiminases (PADs), particularly…
Abstract Number: 0392 • ACR Convergence 2024
Evaluation for the Presence of Antibodies to Malondialdehyde-Acetaldehyde Adduct in Juvenile Idiopathic Arthritis and Its Subtypes
Geoffrey Thiele¹, Panteha Hayati Rezvan², Michal Cidon², Carlos Hunter³, Michael Duryee³, Ted Mikuls³ and Geoffrey Thiele³, ¹Children's Hospital of Los Angeles, Omaha, NE, ²Children's Hospital of Los Angeles, Los Angeles, CA, ³University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Studies of rheumatoid arthritis (RA) have shown that malondialdehyde-acetaldehyde (MAA) protein adducts and anti-MAA immune responses play a pathogenic role in disease progression. Expression of…
Abstract Number: 0458 • ACR Convergence 2024
Long-Term Outcomes in Seronegative Rheumatoid Arthritis
Bradly Kimbrough¹, Cynthia Crowson², Sara Achenbach³ and Elena Myasoedova², ¹Mayo Clinic Rochester, Rochester, MN, ²Mayo Clinic, Rochester, MN, ³Mayo Clinic, Rochester, Rochester, MN
Background/Purpose: Seronegative rheumatoid arthritis (RA) is a heterogenous disease distinct from seropositive RA regarding genetic risk factors, pathobiology, and prognosis. Notably, recent studies have shown…
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: 1648 • ACR Convergence 2024
In Vitro Expansion of ACPA-positive B Cells from Rheumatoid Arthritis Patients and Effect of Small Molecule NF-κB Inhibitors on Differentiation and Survival of (Autoreactive) Memory B Cells into Plasma Cells
Giulia Frazzei¹, Ana Merino Vico², Jan Piet van Hamburg², Ronald Van Vollenhoven³ and Sander Tas⁴, ¹Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands, ²Amsterdam UMC, Amsterdam, Netherlands, ³Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Centers, Amsterdam, Netherlands, ⁴Amsterdam UMC, locatie AMC, Amsterdam, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) play a role in rheumatoid arthritis (RA) pathogenesis and are associated with disease severity. Detailed analysis of ACPApos B cells…
Abstract Number: 1679 • ACR Convergence 2024
Differential Pharmacodynamic Changes of Circulated Immune Subsets After Treatment with Abatacept or Adalimumab in Patients with ACPA+ Early RA in the AMPLIFIED Study
Nathanial Eddy¹, Jane Buckner², Paul Emery³, Michael Weinblatt⁴, Vivian Bykerk⁵, Andrew Cope⁶, Gerd Burmester⁷, Yoshiya Tanaka⁸, Gustavo Citera⁹, Peter Nash¹⁰, Quentin Dornic¹¹, Peter Schafer¹², Sheila Kelly¹³, Michael Maldonado¹¹ and Jinqi Liu¹¹, ¹Bristol Myers Squibb, Princeton, ²Benaroya Research Institute, Seattle, WA, ³University of Leeds, Leeds, United Kingdom, ⁴Brigham and Women's Hospital/ Harvard Medical School, Waban, MA, ⁵Hospital For Special Surgery, New York, NY, ⁶King's College London, London, United Kingdom, ⁷Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, Berlin, Germany, ⁸Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan, ⁹Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina, ¹⁰Griffith University, Brisbane, Australia, ¹¹Bristol Myers Squibb, Princeton, NJ, ¹²Bristol Myers Squibb, BELLE MEAD, NJ, ¹³Bristol Myers Squibb, Doylestown, PA
Background/Purpose: Despite considerable advances in pharmacologic approaches to RA management, a better understanding of the underlying immunopathology is still needed.1,2 A dysregulated immune system is…
Abstract Number: 0039 • ACR Convergence 2024
Blockade of Soluble and Cell Surface PAD Activity Prevents the Generation of Citrullinated Autoantigens Recognized by RA Patients’ Serum
Lacie Scaletta¹, Teneema Kuriakose¹, Sambit Nanda¹, Mia Collins², Erika Darrah³, Iain McInnes⁴, David Close⁵ and Gary Sims¹, ¹Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ²Translational Science and Experimental Medicine, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden, ³Translational Science and Experimental Medicine, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ⁴University of Glasgow, College of Medical Veterinary and Life Sciences, Glasgow, United Kingdom, ⁵Early Clinical Development, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) promote inflammation and joint tissue injury and define a poor prognostic group of patients with rheumatoid arthritis (RA). Citrullinated autoantigens…
Abstract Number: 1871 • ACR Convergence 2024
A Seropositive RA Polygenic Risk Score Does Not Predict Progression to RA in an ACPA Positive Population
Tada Vargas¹, Lauren Vanderlinden², Patrick Carry³, Kristen Demoruelle⁴, Marie Feser¹, Katerina Kechris⁵, Jane Buckner⁶, William Robinson⁷, Gary Firestein⁸, Michael Holers¹, Kevin Deane⁹ and Jill Norris¹⁰, ¹Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ²Colorado School of Public Health, Monument, CO, ³Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, ⁴University of Colorado Anschutz Medical Campus, Golden, CO, ⁵Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, ⁶Benaroya Research Institute, Seattle, WA, ⁷Division of Immunology and Rheumatology, Stanford University, and VA Palo Alto Health Care System, Stanford, CA, ⁸University of California, San Diego, San Diego, CA, ⁹University of Colorado Denver Anschutz Medical Campus, Aurora, CO, ¹⁰Colorado School of Public Health, Denver, CO
Background/Purpose: Serum autoantibodies, such as ACPA and RF, are commonly detectable prior to the development of seropositive clinical RA; however, not all individuals with these…
Abstract Number: 0045 • ACR Convergence 2024
Proteomic Analysis of the Rheumatoid Arthritis Citrullinome Reveals an Enrichment of Citrullinated Complement Proteins
Khushali Trivedi¹, Clarissa Klenke², Jun Kim¹, Jeba Atkia Maisha², Alina Sememenko¹, XIAOBO MENG², Mario Navarrete¹, Hani El-Gabalawy² and Liam O'Neil², ¹University of Manitoba, Winnipeg, Canada, ²University of Manitoba, Winnipeg, MB, Canada
Background/Purpose: Citrullination is a key physiological process that drives autoantibody formation in Rheumatoid Arthritis (RA). This irreversible post-translational modification of the amino acid arginine is…
Abstract Number: 2168 • ACR Convergence 2024
Two Year Data on Quality of Life, Pain and Mobility Scores After Rituximab Treatment in the Preclinical Phase of Rheumatoid Arthritis
Giulia Frazzei¹, Sophie Cramer¹, Robert Landewé², Karen Maijer³, Danielle Gerlag⁴, Paul Tak, MD PhD⁵, Niek De Vries⁶, Lisa van Baarsen⁶, Ronald Van Vollenhoven⁷ and Sander Tas⁸, ¹Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands, ²Amsterdam University Medical Center, Meerssen, Netherlands, ³Tergooi Hospital, Hilversum, Amsterdam, Netherlands, ⁴UCB, Cambridge, United Kingdom, ⁵Candel Therapeutics, Cambridge, United Kingdom, ⁶Amsterdam UMC, Amsterdam, Netherlands, ⁷Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Centers, Amsterdam, Netherlands, ⁸Amsterdam UMC, locatie AMC, Amsterdam, Netherlands
Background/Purpose: Over the past 10 years, several trials have investigated prevention of rheumatoid arthritis (RA) by disease modifying antirheumatic drug (DMARD) therapies. Early treatment of…
Abstract Number: 0046 • ACR Convergence 2024
Impaired Neutrophil Extracellular Trap (NET) Degradation in Rheumatoid Arthritis (RA) and Pre-clinical RA Is Mediated by Anti-NET Antibodies
Jeba Atkia Maisha¹, Alina Sememenko², Jun Kim², Mario Navarrete², XIAOBO MENG¹, Hani El-Gabalawy¹ and Liam O'Neil¹, ¹University of Manitoba, Winnipeg, MB, Canada, ²University of Manitoba, Winnipeg, Canada
Background/Purpose: Rheumatoid Arthritis (RA) begins after a prolonged preclinical phase which is marked by the development of RA antibodies, typically against citrullinated proteins (ACPA). The…

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