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

Abstract Number: 0756 • ACR Convergence 2020
Increased Risk of Hospitalization in Patients with RA Who Are ACPA Positive and Shared Epitope Positive
Joe Zhuo¹, Manasi Suryavanshi¹, Lawshia Priya², Vadim Khaychuk¹, John Vaile¹, Jing Cui³, Nancy Shadick⁴ and Michael Weinblatt³, ¹Bristol-Myers Squibb Company, Princeton, NJ, ²Mu-Sigma, Bangalore, India, ³Brigham and Women's Hospital, Boston, MA, ⁴Division of Rheumatology, Inflammation, and Immunity; Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
Background/Purpose: A strong genetic association between HLA-DRB1 alleles containing the shared epitope (SE) and RA has been described.1 The SE has been associated with ACPA…
Abstract Number: 2043 • ACR Convergence 2020
Identification and Validation of Citrulline Specific TCRs in CD4+T Cells in Rheumatoid Arthritis
Ravi Kumar¹, Niyaz Yoosuf², Sanjay Boddul², Christina Gerstner³, Sara Turcinov⁴, Anatoly Dubnovitsky⁵, Fredrik Wermeling², Karine Chemin⁶ and Vivianne Malmström⁷, ¹Division of Rheumatology, Department of Medicine, Stickholm, Stockholms Lan, Sweden, ²Division of Rheumatology, Department of Medicine, Stockholm, Sweden, ³Division of Rheumatology, Department of Medicine,Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden, ⁴Division of Rheumatology, Department of Medicine,Center for Molecular Medicine, Institutet, Stockholm, Sweden, ⁵Karolinska Institutet, Stockholm, ⁶Division of Rheumatology, Department of Medicine, Stockholm, Stockholms Lan, Sweden, ⁷Karolinska Institutet, Stockholm, Stockholms Lan, Sweden
Background/Purpose: Citrulline (cit) autoimmunity is central in rheumatoid arthritis (RA), including both anti-citrulline protein antibodies (ACPA) and autoreactive CD4+ T cells. While the ACPA are…
Abstract Number: 0757 • ACR Convergence 2020
Sunlight Exposure, Sun-protective Behaviour, and Anti-citrullinated Protein Antibody Positivity: A General Population-based Study in Quebec, Canada
Naizhuo Zhao¹, Audrey Smargiassi², Ines Colmegna³, Marie Hudson⁴, Marvin Fritzler⁵ and Sasha Bernatsky⁶, ¹McGill University, Montreal, Canada, ²l’Université de Montréal, Montreal, Canada, ³The Research Institute of the McGill University Health Centre, Montreal, Canada, ⁴Division of Rheumatology, Jewish General Hospital, Montréal, QC, Canada, ⁵Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada, ⁶The Research Institute of the McGill University Health Centre, Montreal, ON, Canada
Background/Purpose: Sunlight exposure has been associated with lower rheumatoid arthritis (RA) risk, but to our knowledge, no one has ever studied sunlight exposure and anti-citrullinated…
Abstract Number: 0758 • ACR Convergence 2020
Anti-citrullinated Protein Antibodies Are Associated with Functional Disability in Unaffected First-degree Relatives of Rheumatoid Arthritis Patients
Dana Wiens¹, Irene Smolik¹, Xiaobo Meng¹, Vidyanand Anaparti¹, Hani El-Gabalawy¹ and Liam O'Neil¹, ¹University of Manitoba, Winnipeg, MB, Canada
Background/Purpose: The preclinical stage of Rheumatoid Arthritis (RA) is characterized by seropositivity for anti-citrullinated protein antibodies (ACPA). We (PubMed ID 30861615), and others, have shown that ACPA seropositivity…
Abstract Number: 0761 • ACR Convergence 2020
Anti-Peptidylarginine Deaminase Antibodies in the Individuals with Arthralgia at Risk of Progression to Rheumatoid Arthritis
Nora Petrovská¹, Klára Prajzlerová¹, Ivana Půtová², Monika Gregová¹, Petra Hánová², Heřman Mann³, Karel Pavelka¹, Jiří Vencovský¹, Ladislav Šenolt¹ and Mária Filková¹, ¹Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ²Institute of Rheumatology, Prague, Czech Republic, ³Institute of Rheumatology, Prague, Czech Republic. Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic
Background/Purpose: In order to identify the individuals at risk of imminent progression to rheumatoid arthritis (RA), EULAR has established a definition of clinically suspect arthralgia…
Abstract Number: 0763 • ACR Convergence 2020
Plasmatic Proteome in Individuals with Arthralgia at Risk of Developing Rheumatoid Arthritis
Klára Prajzlerová¹, Nora Petrovská¹, Monika Gregová¹, Jiří Baloun², Petra Hánová², Karel Pavelka¹, Jiří Vencovský¹, Ladislav Šenolt¹ and Mária Filková¹, ¹Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ²Institute of Rheumatology, Prague, Czech Republic
Background/Purpose: The presence of antibodies against citrullinated proteins (ACPA) significantly increases the risk of developing rheumatoid arthritis (RA). EULAR characterised individuals with arthralgia suspicious for…
Abstract Number: 0768 • ACR Convergence 2020
Dynamics of Follicular Helper T Cells Subsets in Rheumatoid Arthritis Patients Before and After Treatment
Paola Virginia Ferrero¹, Luisina Onofrio¹, Cristina del Valle Acosta¹, Estefania Raquel Zacca¹, Nicolas Eric Ponce², Eduardo Mussano¹, Ignacio Isaac Cadile¹, Laura Onetti¹, Marina Werner¹, Alicia Beatriz Costantino¹, Eva Virginia Acosta Rodriguez³ and Adriana Gruppi², ¹HOSPITAL NACIONAL DE CLINICAS, FACULTAD DE MEDICINA, UNIVERSIDAD NACIONAL DE CORDOBA, CORDOBA, Cordoba, Argentina, ²FACULTAD DE CIENCIAS QUIMICAS, UNIVERSIDAD NACIONAL DE CORDOBA. CENTRO DE INVESTIGACIONES EN BIOQUIMICA CLINICA E INMUNOLOGIA, CORDOBA, Cordoba, Argentina, ³FACULTAD DE CIENCIAS QUIMICAS, UNIVERSIDAD NACIONAL DE CORDOBA. CENTRO DE INVESTIGACIONES EN BIOQUIMICA CLINICA E INMUNOLOGIA, CORDOBA, Argentina
Background/Purpose: Rheumatoid Arthritis (RA) is a chronic inflammatory disease characterized by the production of autoantibodies like rheumatoid factor and anti- citrullinated protein. CD4+ follicular helper T…
Abstract Number: 0769 • ACR Convergence 2020
Does the Autoantibody-Response Mature Between Presentation with Arthralgia and Development of Rheumatoid Arthritis? – a Longitudinal Serological Study
Fenne Wouters¹, Ellis Niemantsverdriet¹, Nazike Salioska¹, Annemarie Dorjée¹, René Toes¹ and Annette van der Helm - van Mil², ¹Leiden University Medical Center, Leiden, Netherlands, ²Leiden University Medical Center, Erasmus Medical Center, Leiden, Netherlands
Background/Purpose: Auto-antibodies in rheumatoid arthritis (RA) are often present years before disease onset but their mere presence does not seem enough to induce RA. Several…
Abstract Number: 0772 • ACR Convergence 2020
Modification of THP-1 Cells with Malondialdehyde-Acetaldehyde Increases Cellular Calcium Load Rendering Cells Susceptible to Citrullination of Self-Proteins
Nozima Aripova¹, Michael Duryee¹, Xiarepati Tieliwaerdi¹, Xiaoting Jiang¹, Lynell Klassen², James O'Dell¹, Bryant England¹, Ted Mikuls¹ and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Univerisity of Nebraska Medical Center, Omaha, NE
Background/Purpose: The post translational modification of self-proteins with malondialdehyde-acetaldehyde (MAA) has been shown to alter protein function and antibodies to MAA are increased in both…
Abstract Number: 0801 • ACR Convergence 2020
The Comparative Effectiveness of Abatacept versus TNF Inhibitors in Patients Who Are ACPA Positive and Have the Shared Epitope: Results from a US National Observational Study
Leslie Harrold¹, Keith Wittstock², Sheila Kelly², Xue Han², Joe Zhuo², Amy Schrader¹, Nicole Middaugh¹, Page Moore¹ and Vadim Khaychuk², ¹Corrona, LLC, Waltham, MA, ²Bristol-Myers Squibb Company, Princeton, NJ
Background/Purpose: The HLA-DRB1 shared epitope (SE) is associated with joint destruction in ACPA+ patients (pts) with RA.1 In the Early AMPLE trial, among ACPA+ pts…
Abstract Number: 0804 • ACR Convergence 2020
Factors That Influence Biological Survival in Rheumatoid Arthritis: Results of a Real-world Cohort from the Netherlands
Elise van Mulligen¹, Saad Ahmed¹, Angelique Weel², Mieke Hazes³, Annette van der Helm - van Mil⁴ and Pascal de Jong¹, ¹Erasmus MC, Rotterdam, Netherlands, ²Erasmus School of Health Policy & Management, Maasstad hospital, Erasmus MC, Rotterdam, Netherlands, ³Erasmus Medical Center, Rotterdam, Netherlands, ⁴Leiden University Medical Center, Erasmus Medical Center, Leiden, Netherlands
Background/Purpose: Data on biological survival, stratified for discontinuation reasons, and predictors that influence survival time have not been explored extensively. Therefore, we aim to explore…
Abstract Number: 0824 • ACR Convergence 2020
The Comparative Effectiveness of Abatacept versus Tofacitinib After 6 Months of Treatment in Patients with RA Who Were Anti-citrullinated Protein Antibody Positive at Baseline: Results from a US National Observational Study
Leslie Harrold¹, Keith Wittstock², Sheila Kelly², Xue Han², Ying Shan¹, Page Moore¹, Lin Guo¹ and Vadim Khaychuk², ¹Corrona, LLC, Waltham, MA, ²Bristol-Myers Squibb Company, Princeton, NJ
Background/Purpose: Previous data from the Corrona RA registry, conducted in a US clinical practice setting, demonstrated that patients (pts) with RA who were ACPA+ had…

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