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Abstracts tagged "anti-citrullinated protein/peptide antibodies (ACPA)"

  • Abstract Number: 145 • 2020 Pediatric Rheumatology Symposium

    Anti-Citrullinated Protein Antibodies (ACPA) and Bony Erosions in Polyarticular JIA

    Saumya Joshi1, Yujuan Zhang 1 and Trevor Davis 2, 1Tufts Medical Center, Boston, Massachusetts, 2Norwell, Massachusetts

    Background/Purpose: Despite being a well-established biomarker for classification of aggressive bony disease in adults with RA, ACPA have not yet been described in the ILAR…
  • Abstract Number: 16 • 2019 ACR/ARP Annual Meeting

    Monoclonal ACPA Promote Synovial Fibroblasts Migration Through a Peptidylarginine Deiminases (PAD) Dependent Pathway

    Meng Sun1, Bence Rethi 1, Akilan Krishnamurthy 2, Vijay Joshua 3, Alexandra Circiumaru 1, Aase Hensvold 1, Marianne Engström 4, Sergiu-Bogdan Catrina 5, Johanna Steen 6, Vivianne Malmström 3, Caroline Grönwall 3, Lars Klareskog 7, Heidi Wähämaa 1 and Anca Catrina 7, 1Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, 2Rheumatology unit, Department of Medicine, Karolinska University Hospital and Karolinska Institutet, Solna, Stockholm, 3Rheumatology Unit, Department of Medicine, Karolinska University Hospital and Institutet, Stockholm, Sweden., Stockholm, Sweden, 4Karolinska Institutet and Karolinska University Hospital, Stockholm, 5Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden, 6Stockholm University, Stockholm, 7Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Sweden

    Background/Purpose: Anti-citrullinated protein antibodies (ACPAs) play an important role in rheumatoid arthritis (RA) pathogenesis. ACPAs have different amino acid motif recognition patterns and show cross-reactivity…
  • Abstract Number: 47 • 2019 ACR/ARP Annual Meeting

    Autoreactivity to Acetylated Histones Defines a Subset of RA Patients and Is Associated with Acetyl – Citrulline Anti-Modified Protein Autoantibody (AMPA) Cross-Reactivity

    Peter Sahlström 1, Lisa Liljefors 1, Vijay Joshua 2, Natalia Sherina 1, Radha Thyagarajan 1, Lena Israelsson 2, Ragnhild Stålesen 2, Monika Hansson 3, Khaled Amara 2, Ulf Reimer 4, Leonid Padyukov 1, Elisabet Svenungsson 5, Karin Lundberg 1, Anca Catrina 3, Lars Klareskog 3, Vivianne Malmström 2 and Caroline Grönwall2, 1Karolinska Institutet, Stockholm, Sweden, 2Rheumatology Unit, Department of Medicine, Karolinska University Hospital and Institutet, Stockholm, Sweden., Stockholm, Sweden, 3Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Sweden, 4JPT Peptide Technologies, Berlin, Germany, 5Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden

    Background/Purpose: Serum anti-citrullinated protein autoantibodies (ACPA) in rheumatoid arthritis (RA) display reactivity to a variety of cit-autoantigens. Studies of human ACPA mAbs have revealed that…
  • Abstract Number: 249 • 2019 ACR/ARP Annual Meeting

    Evaluation of Real-World Early-Line Abatacept versus Tumor Necrosis Factor Inhibitors Persistence in Rheumatoid Arthritis Patients with Anti-Citrullinated Protein Antibody or Rheumatoid Factor Positivity

    Damemarie Paul 1, Xue Han2, Irina Yermilov 3, Sarah Gibbs 3 and Michael Broder 3, 1Bristol-Myers Squibb, Lawrenceville, NJ, 2Bristol-Myers Squibb Company, Princeton, NJ, 3Partnership for Health Analytic Research, LLC, Beverly Hills, CA

    Background/Purpose: Abatacept is recommended as first-line biologic therapy in adult patients with moderate to severe RA. We aimed to assess real-world 1-year treatment persistence in…
  • Abstract Number: 450 • 2019 ACR/ARP Annual Meeting

    ACPA-positive versus ACPA-negative Rheumatoid Arthritis: Two Distinct Erosive Disease Entities on Radiography and Ultrasonography

    Julien Grosse1, Edem Allado 1, Camille Roux 1, Audrey Pierreisnard 2, Marion Couderc 3, Isabelle Clerc-Urmès 1, Thomas Remen 1, Eliane Albuisson 4, Marcelo De Carvalho 1, Isabelle Chary-Valckenaere 4 and Damien Loeuille 5, 1Centre Hospitalier Universitaire de Nancy, Nancy, France, 2APHP, Paris, France, 3CHU G.Montpied, Clermont Ferrand, France, 4Centre Hospitalier Universitaire de Nancy, VANDOEUVRE, France, 5Rheumatology, Nancy University Hospital and and UMR 7365 CNRS-UL IMoPA, Université de Lorraine, VANDOEUVRE, France

    Background/Purpose: Several studies have shown that ACPA-positive (ACPA+) patients were more likely to develop erosive disease on radiography (RX) than ACPA-negative (ACPA-) patients, but it…
  • Abstract Number: 455 • 2019 ACR/ARP Annual Meeting

    Anti-Protein-Arginine Deiminase (PAD) 4 IgA Are Present in the Sera of Rheumatoid Arthritis Patients and Are Associated with Joint Erosion and Biological Treatment Use

    Laura Martinez-Prat1, Victor Manuel Martínez Taboada 2, Marcos Lopez-Hoyos 3 and Michael Mahler 4, 1Inova Diagnostics, Francisco de Vitoria University, San Diego, CA, 2Hospital Universitario Marqués de Valdecilla, Santander, Spain, 3Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Cantabria, Spain, 4Inova Diagnostics, San Diego, CA

    Background/Purpose: Over the past years, novel biomarkers have been described in rheumatoid arthritis (RA) patients, including autoantibodies to the protein-arginine deiminase (PAD) enzymes. Anti-PAD4 IgG…
  • Abstract Number: 482 • 2019 ACR/ARP Annual Meeting

    Antibody Repertoire Sequencing, Antigen Array Analysis, and Cytokine Profiling of Blood from Individuals at High-risk for RA Reveals Candidate Immunoglobulin V Genes, ACPA, and Cytokines That May Promote the Transition to Arthritis

    Radhika Iyer1, Amin Zia 1, Michelle Bloom 1, Sunil Nagpal 2, Navin Rao 2, Frédéric Baribaud 3, George Vratsanos 4, Wei Wang 5, Gary Firestein 6, David Boyle 5, Jane Buckner 7, V. Michael Holers 8, Kevin Deane 9 and William Robinson 10, 1Stanford University, Stanford, 2Janssen R&D, Spring House, PA, 3Janssen Research & Development, LLC, Spring House, PA, 4JNJ, Raritan, NJ, 5University of California, San Diego, San Diego, CA, 6University of California, San Diego, San Diego, 7Benaroya Research Institute, Seattle, WA, 8University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA, Denver, 9University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA, Aurora, CO, 10Stanford University, Stanford, CA

    Background/Purpose: The “Targeting Immune Responses for Prevention of RA” (TIP-RA) collaboration studies individuals at high risk for developing rheumatoid arthritis (RA) because of serum anti-citrullinated…
  • Abstract Number: 496 • 2019 ACR/ARP Annual Meeting

    Assessment of Anti-Cyclic Citrullinated Protein and Connective Tissue Disease Screening Questionnaire in Healthy Adults from the Oklahoma Immune Cohort

    McKayla Muse1, Ly Tran 1, Carla J. Guthridge 2, Nancy Redinger 2 and Judith James 3, 1Oklahoma Medical Research Foundation, Oklahoma City, 2Oklahoma Medical Research Foundation, Oklahoma City, OK, 3Oklahoma Medical Research Foundation, University of Oklahoma Health Sciences Center, Oklahoma City, OK

    Background/Purpose: Anti-CCP antibodies are present in the serum of healthy individuals who are at risk of developing RA and serve as an important tool for…
  • Abstract Number: 546 • 2019 ACR/ARP Annual Meeting

    Change in Rheumatoid Arthritis (RA)-Related Autoantibody Profile and Risk of Disease Flare After Withdrawal of Therapy in Patients with Early RA Treated with Abatacept and MTX

    René Toes1, Thomas Lehman 2, Joshua Bryson 3, Amy Min Kim 2, Sandhya Balachandar 2, Sumanta Mukherjee 2, Michael Maldonado 2, Sean Connolly 2 and Thomas Huizinga 1, 1Leiden University Medical Center, Leiden, Netherlands, 2Bristol-Myers Squibb, Princeton, NJ, 3Bristol-Myers Squibb, Princeton

    Background/Purpose: An emerging concept of “immunologic remission” in RA raises questions about the relevance of the RA autoantibody profile in patients (pts) who are otherwise…
  • Abstract Number: 987 • 2019 ACR/ARP Annual Meeting

    Anti-citrullinated Protein Antibodies Induce Subclinical Inflammation, Bone Loss and Pain in Mice

    Akilan Krishnamurthy1, Yogan Kisten 2, Alexandra Circiumaru 3, Katalin Sandor 4, Koji Sakurabas 5, Gustaf Wigerblad 6, Peter Damberg 7, Heidi Wähämaa 3, Patrik Jarvolli 7, Vivianne Malmström 8, Lars Klareskog 9, Camilla I Svensson 10, Juan Jimenez Jimenez Andrade 11, Bence Rethi 3 and Anca Catrina 9, 1Rheumatology unit, Department of Medicine, Karolinska University Hospital and Karolinska Institutet, Solna, Stockholm, 2Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden, 3Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, 4Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden, stockholm, Sweden, 5Rheumatology unit, Department of Medicine, Karolinska University Hospital and Karolinska Institutet, Solna, stockholm, Sweden, 6karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, Stockholm, Sweden, 7Karolinska Institutet, Karolinska Experimental Research and Imaging Centre (KERIC), stockholm, Sweden, stockholm, Sweden, 8Rheumatology Unit, Department of Medicine, Karolinska University Hospital and Institutet, Stockholm, Sweden., Stockholm, Sweden, 9Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Sweden, 10Karolinska Institutet, Physiology and Pharmacology, stockholm, Sweden, Stockholm, Sweden, 11Universidad Autónoma de Tamaulipas, Reynosa, Tamaulipas, Mexico, Tamaulipas, Mexico

    Background/Purpose: Autoantibodies against citrullinated proteins (ACPAs) could be associated with bone loss, pain and tenosynovitis prior to disease onset in human rheumatoid arthritis (RA) and…
  • Abstract Number: 994 • 2019 ACR/ARP Annual Meeting

    Increased Antibody and T-cell Responses Following Treatment of Collagen-Induced Arthritis in C57Bl/6 Mice with Organic Dust Inhalants

    Michael Duryee1, Jill Poole 1, Amy Nelson 1, Katherine Janike 1, Kathryn Rentfro 1, Lynell Klassen 1, James O'Dell 2, Bryant England 3, Geoffrey Thiele 2 and Ted Mikuls 2, 1University of Nebraska Medical Center, Omaha, NE, 2VA Nebraska-Western IA Health Care System & University of Nebraska Medical Center, Omaha, NE, 3VA Nebraska-Western IA Health Care System & University of Nebraska Medical Center, Omaha

    Background/Purpose: Increasing evidence suggests that inhalant exposures, such as tobacco smoke or silica, are implicated in the initiation of autoimmunity leading to rheumatoid arthritis (RA).…
  • Abstract Number: 1758 • 2019 ACR/ARP Annual Meeting

    Development of Ultrasound Detectable Arthritis Among ACPA Positive Subjects with Musculoskeletal Symptoms: The Risk RA Prospective Study

    Aase Hensvold1, Yogan Kisten 2, Alexandra Circiumaru 1, Monika Hansson 3, Meng Sun 1, Guozhong Fei 4, Nancy Vivar 2, Erik af Klint 2, Hamed Rezaei 2, Lars Klareskog 3, Aleksandra Antovic 5 and Anca Catrina 3, 1Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, 2Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden, 3Rheumatology unit Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden, Stockholm, Sweden, 4Center for Rheumatology, Academic Specialist Center, Stockholm Health Services, Stockholm, Sweden, Stockholm, Sweden, 5Center for Rheumatology, Academic Specialist Center, Stockholm Health Services, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden

    Background/Purpose: Studies have shown that anti-citrullinated protein antibodies (ACPA) are a risk factor for the development of arthritis. We aimed to investigate in a prospective…
  • Abstract Number: 1886 • 2019 ACR/ARP Annual Meeting

    Antibody Systems Targeting Citrullinated, Carbamylated, and Peptidyl Arginine Deaminase Autoantigens Distinguish Rheumatoid Arthritis in Combination with Rheumatoid Factors

    Thierry Dervieux1, Joel Kremer 2, John Conklin 1, Kelley Brady 1, Roberta Alexander 1, Tyler O'Malley 3, Jing Shi 1, Claudia Ibarra 1, Michael Mahler 4, Michael Weinblatt 5 and Arthur Weinstein 1, 1Exagen, Vista, CA, 2Albany Medical College and The Center for Rheumatology; Corrona, LLC, Albany, NY, 3Exagen, Oceanside, CA, 4Inova Diagnostics, San Diego, CA, 5Brigham and Women's Hospital, Boston, MA

    Background/Purpose: Novel antibody systems including anti-carbamylated protein antibody (anti-CarP IgG) and anti-peptidyl arginine deiminase antibody (anti-PAD4 IgG) are emerging as independent diagnostic and prognostic biomarkers…
  • Abstract Number: 2861 • 2019 ACR/ARP Annual Meeting

    Lung-Related Factors Are Associated with Transitions from Systemic Anti-CCP Antibody Positivity to Classified RA

    Ashley Visser 1, Marie Feser 2, Chelsie Fleischer 3, Laura Lenis-Charry 1, Justin August 1, Elizabeth Bemis 4, Jill Norris 5, V. Michael Holers 6, Kevin Deane 2 and M. Kristen Demoruelle7, 1University of Colorado Denver, Aurora, 2University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA, Aurora, CO, 3University of Colorado Denver, Division of Rheumatology, Aurora, CO USA, Aurora, 4University of Colorado Denver, School of Public Health, Aurora, CO USA, Aurora, 5Colorado School of Public Health, Aurora, 6University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA, Denver, 7University of Colorado Denver, Division of Rheumatology, Aurora, CO, USA, Aurora

    Background/Purpose: Systemic autoimmunity associated with RA precedes the onset of inflammatory arthritis (IA) by several years. In particular, the presence of systemic anti-cyclic citrullinated peptide…
  • Abstract Number: 2325 • 2018 ACR/ARHP Annual Meeting

    Sex Differences in the Association of Frailty and Bone Mineral Density in Patients with Rheumatoid Arthritis

    Katherine D. Wysham1, Dolores M. Shoback2, John B. Imboden Jr.3 and Patricia Katz4, 1University of California, San Francisco, San Francisco, CA, 2Medicine, San Francisco VA Medical Center, University of California, San Francisco, San Francisco, CA, 3Medicine, University of California, San Francisco, San Francisco, CA, 4University of California San Francisco, San Francisco, CA

    Background/Purpose: Frailty in the general population is associated with poor outcomes including osteoporosis (OP), fracture and death. Frailty occurs at a higher rate in RA…
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