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

Abstract Number: 0038 • ACR Convergence 2021
Arthritis Progression in at Risk Individuals Is Associated with ACPAs Not AMPAs
Alexandra Circiumaru¹, Yogan Kisten², Monika Hansson², Heidi Wähämaa³, Meng Sun³, Vijay Joshua³, Hamed Rezaei⁴, Erik Af Klint⁴, Aleksandra Antovic¹, Anca Catrina³ and Aase Haj Hensvold⁵, ¹Division for Rheumatology, Karolinska Institutet; Center for Rheumatology, Academic Specialist Center, Stockholm Region, Stockholm, Sweden, ²Division for Rheumatology, Karolinska Institutet, Stockholm, Sweden, ³Karolinska Institutet and Karolinska university Hospital, Stockholm, Sweden, ⁴Division for Rheumatology, Karolinska Institutet; Department of Rheumatology, Karolinska University Hospital, Stockholm, Sweden, ⁵Karolinska Institutet, Division for Rheumatology; & Center for Rheumatology, Academic Specialist Center, Stockholm Region, Stockholm, Sweden
Background/Purpose: Individuals with anti citrullinated protein antibodies (ACPA) and musculoskeletal complaints are at high risk for developing rheumatoid arthritis (RA) and often seek medical attention…
Abstract Number: 1654 • ACR Convergence 2021
Comparative Characteristics of the Natural Course of Early Rheumatoid Arthritis with Onset at a Young Age (18-49 Years) and Older (50 Years and Older) Patients Who Did Not Take DMARDs, Biologics, Other Targeted Drugs, Corticoids According to the Russian Register of Arthritis OREL
Azamat Satybaldyev, Galina Gridneva, Anna Misiyuk, Natalia Demidova, Kamalia Kasumova and Evgeny Nasonov, V.A. Nasonova Reseach Institute of Rheumatology, Moscow, Russia
Background/Purpose: Comparison of frequency of different clinical features of the natural course at the stage of early rheumatoid arthritis (RA) in patients with young and…
Abstract Number: 0039 • ACR Convergence 2021
Elevated IgA Subclass Levels in Rheumatoid Arthritis Patients: Indications of a Mucosal Origin?
Veerle Derksen, Cornelia F. Allaart, Annette H.M van der Helm-van Mil, Tom WJ Huizinga, René Toes and Diane van der Woude, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Mucosal surfaces may be involved in the pathophysiology of rheumatoid arthritis (RA) (1). IgA is the most abundant class of immunoglobulin at mucosal sites…
Abstract Number: 0042 • ACR Convergence 2021
High-throughput Testing for Modified-protein Antibodies in Patients Diagnosed with “Seronegative” Rheumatoid Arthritis
Michael Richter¹, Hari Krishnamurthy², Sylvia Posso³, Jeffrey Carlin⁴ and Jane Buckner³, ¹University of Washington, Mercer Island, WA, ²Vibrant Sciences, San Carlos, CA, ³Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁴Virginia Mason Medical Center, Seattle, WA
Background/Purpose: Antibodies to citrullinated and other modified proteins play a critical role in the pathogenesis of rheumatoid arthritis (RA). The prevalence and degree of multi-site…
Abstract Number: 0228 • ACR Convergence 2021
Optimizing Social Media as a Recruitment Tool for Hard-to-Reach Populations in Rheumatology Clinical Research
Vladislav Tsaltskan¹, Katherine Nguyen¹, Christina Eaglin¹, Kevin Deane², V. Michael Holers³ and Gary Firestein¹, ¹University of California San Diego, San Diego, CA, ²University of Colorado Denver, Denver, CO, ³University of Colorado, Denver, CO
Background/Purpose: Standard methods of recruitment for clinical research, such as traditional media advertisements, can be inefficient and expensive, especially for underserved communities and asymptomatic individuals.…
Abstract Number: 0132 • ACR Convergence 2020
Prevalence of Osteoporosis and Fragitlity Fractures Is Not Different Between ACPA Positive Patients Compared to ACPA Negative Patients in a Real World Setting, Despite Longer Disease Duration and Glucocorticoid-Treatment
Edgar Wiebe¹, Desiree Freier¹, Dörte Huscher², Gloria Dallagiacoma³, Sandra Hermann¹, Robert Biesen⁴, Gerd Burmester⁵ and Frank Buttgereit⁶, ¹Charité University Medicine Berlin, Dep. of Rheumatology and Clinical Immunology, Berlin, Germany, ²Charité University Medicine Berlin, Dep. of Biometry and Clinical Epidemiology, Berlin, Germany, ³University of Verona, Dep. of Rheumatology, Verona, Italy, ⁴Charité University Medicine, Dep. of Rheumatology and Clinical Immunology, Berlin, ⁵Charité University Hospital Berlin, Berlin, Germany, ⁶Charité University Medicine, Berlin, Germany
Background/Purpose: Rheumatoid arthritis (RA) is associated with increased systemic bone loss, leading to a high risk for hip, vertebral and non-hip, non-vertebral fractures. Especially ACPA…
Abstract Number: 0826 • ACR Convergence 2020
Clinical Responses and Patient Flow over 2 Years of Treatment with Abatacept, Including Dose De-Escalation, in Patients with Early, MTX-Naïve, ACPA+ RA: Results from a Phase IIIb Study
Paul Emery¹, Yoshiya Tanaka², Vivian Bykerk³, Clifton Bingham III⁴, Thomas Huizinga⁵, Gustavo Citera⁶, Kuan-Hsiang Gary Huang⁷, Sean Connolly⁸, Yedid Elbez⁹, Robert Wong⁸, Karissa Lozenski⁸ and Roy Fleischmann¹⁰, ¹Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK, Leeds, United Kingdom, ²The First Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan, ³Hospital for Special Surgery, New York, NY, ⁴Johns Hopkins University, Baltimore, MD, ⁵Leiden University Medical Center, Leiden, Netherlands, ⁶Instituto de Rehabilitación Psicofísica, Buenos Aires, Argentina, ⁷Bristol-Myers Squibb Company (at time of analysis), Princeton, NJ, ⁸Bristol-Myers Squibb Company, Princeton, NJ, ⁹Excelya, Boulogne-Billancourt, France, ¹⁰Southwestern Medical Center, Metroplex Clinical Research Center, Dallas, TX
Background/Purpose: In the 56-week (wk) induction period (IP) of the Phase IIIb Assessing Very Early RA Treatment (AVERT)-2 trial (NCT02504268), a greater proportion of patients…
Abstract Number: 0195 • ACR Convergence 2020
Epidemiology and Characteristics of Incident Rheumatoid Arthritis in Persons with and Without HIV
Jennifer Hanberg¹, Kathleen Akgun², Liana Fraenkel³, Evelyn Hsieh² and Amy Justice⁴, ¹Yale University School of Medicine; West Haven VA, Boston, MA, ²Yale University School of Medicine; West Haven VA, New Haven, CT, ³Yale School of Medicine; West Haven VA; Berkshire Medical Center, Lenox, MA, ⁴Yale University School of Medicine; Yale School of Public Health; West Haven VA, West Haven, CT
Background/Purpose: Rheumatoid arthritis (RA) is the most common chronic inflammatory arthritis, affecting 1-2% of the population. Estimates of the incidence of RA in patients with…
Abstract Number: 0993 • ACR Convergence 2020
N-linked Glycosylation of the Immunoglobulin Variable Domain Affects Antigen Binding and Autoreactive B Cell Activation
Theresa Kissel¹, Changrong Ge², Lise Hafkenscheid¹, Linda Slot¹, Marco Cavallari³, Joanneke Kwekkeboom⁴, Manfred Wuhrer¹, Thomas Huizinga¹, Hans Scherer¹, Michael Reth³, Rikard Holmdahl² and René Toes¹, ¹Leiden University Medical Center, Leiden, Netherlands, ²Karolinska Institutet, Solna, Sweden, ³University Freiburg, Freiburg, Germany, ⁴Leiden Univeristy Medical Center, Leiden, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies, the hallmarking autoantibodies in Rheumatoid Arthritis (RA), are characterized by N-linked glycans in the variable domain (V-domain). The occurrence of these…
Abstract Number: 0481 • ACR Convergence 2020
Subclinical Synovitis in Arthralgia: How Often Does It Result in Clinical Arthritis? A Longitudinal Study to Reflect on Starting Points for DMARD Treatment
Cleo Rogier¹, Fenne Wouters², Laurette van Boheemen³, Dirkjan van Schaardenburg⁴, Pascal de Jong¹ and Annette van der Helm - van Mil⁵, ¹Erasmus MC, Rotterdam, Netherlands, ²Leiden University Medical Center, Leiden, Netherlands, ³Amsterdam Rheumatology and immunology Center | Reade, Amste, Netherlands, ⁴Amsterdam Rheumatology and immunology Center | Reade and Amsterdam UMC, Amsterdam, Netherlands, ⁵Leiden University Medical Center, Erasmus Medical Center, Leiden, Netherlands
Background/Purpose: According to guidelines, clinical arthritis is mandatory for diagnosing rheumatoid arthritis (RA). However, in the absence of clinical synovitis, imaging-detected subclinical synovitis is increasingly…
Abstract Number: 1456 • ACR Convergence 2020
Exploring the RA Bone Marrow Niche by Single-cell Technology to Identify Long Lived ACPA+ Plasma Cells
Khaled Amara¹, Aase Hensvold², Radha Thyagarajan¹, Lena Israelsson¹, Johanna Steen¹, Heidi Wähämaa¹, Monika Hansson¹, Marianne Engström¹, Annika van Vollenhoven¹, Anca Catrina², Vivianne Malmström³ and Caroline Grönwall¹, ¹Karolinska Institutet, Stockholm, Sweden, ²Rheumatology Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden, Stockholm, Stockholms Lan, Sweden, ³Karolinska Institutet, Stockholm, Stockholms Lan, Sweden
Background/Purpose: Autoantibodies is a hallmark of rheumatoid arthritis, placing the adaptive immune system and B-cells centrally in the pathogenesis. The anti-citrullinated autoantibodies (ACPA) detected in…
Abstract Number: 0490 • ACR Convergence 2020
Fine Specificity Anti-Citrullinated Protein Antibodies as Biomarkers for Prediction of Incident Rheumatoid Arthritis-Associated Interstitial Lung Disease
Vanessa Kronzer¹, Weixing Huang², Paul Dellaripa³, Sicong Huang⁴, Vivi Feathers², Bing Lu⁵, Christine Iannaccone⁴, Ritu Gill⁶, Hiroto Hatabu⁷, Mizuki Nishino⁷, Cynthia Crowson⁸, John Davis¹, William Robinson⁹, Tripta Rughwani⁹, Jeremy Sokolove¹⁰, Michael Weinblatt⁴, Nancy Shadick¹¹, Tracy J. Doyle¹² and Jeffrey Sparks¹¹, ¹Mayo Clinic, Rochester, MN, ²Division of Rheumatology, Inflammation, and Immunity; Brigham and Women’s Hospital and Harvard Medical School, Boston, ³Division of Rheumatology, Brigham and Women's Hospital, Boston, Massachusetts, USA, Boston, MA, ⁴Brigham and Women's Hospital, Boston, MA, ⁵Brigham and Women's Hospital and Harvard Medical School, Newton, MA, ⁶Beth Israel Deaconess Medical Center, Boston, MA, ⁷Department of Radiology; Brigham and Women’s Hospital, Boston, ⁸Mayo Clinic, Rochester, Minnesota, USA, Rochester, MN, ⁹Stanford University, Palo Alto, CA, ¹⁰Stanford University, Mountain View, CA, ¹¹Division of Rheumatology, Inflammation, and Immunity; Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, ¹²Brigham and Women's Hospital, West Roxbury, MA
Background/Purpose: Seropositivity for anti-citrullinated protein antibodies (ACPA) has been shown to increase risk for RA-associated interstitial lung disease (RA-ILD). However, RA-related autoantibodies used in clinical…
Abstract Number: 1720 • ACR Convergence 2020
Factors Associated with an Increased Risk of Imminent Rheumatoid Arthritis in ACPA+ Individuals
Hyoun-Ah Kim¹, Ryan Peterson², Gary Firestein³, David Boyle⁴, Jane Buckner⁵, Sylvia Posso⁶, Eddie James⁵, William Robinson⁷, Jaron Arbet², LauraKay Moss⁸, Roger Gilmore⁸, Lindsay Hartje⁸, Saman Barzideh⁸, Jennifer Seifert⁹, Navin Rao¹⁰, Frédéric Baribaud¹¹, Sunil Nagpal¹², Alyssa Johnson¹³, V Michael Holers¹⁴ and Kevin D. Deane¹⁵, ¹University of Colorado Anschutz Medical Campus and Ajou University School of Medicine, Aurora, CO, ²Department of Biostatistics and Informatics, Colorado School of Public Health, Aurora, CO, ³University of California, San Diego, La Jolla, CA, ⁴UC San Diego, San Diego, CA, ⁵Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁶Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁷Stanford University, Palo Alto, CA, ⁸University of Colorado Anschutz Medical Campus, Aurora, CO, ⁹Division of Rheumatology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA, Littleton, CO, ¹⁰Janssen R&D, Spring House, PA, ¹¹Janssen Research & Development, LLC, Spring House, PA, ¹²Janssen Reserach and Development, Spring House, PA, ¹³Janssen Research and Development, Spring House, PA, ¹⁴Division of Rheumatology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA, Colorado, ¹⁵2 Division of Rheumatology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA, Colorado
Background/Purpose: Individuals at high-risk for future rheumatoid arthritis (RA) may be identified by screening for circulating RA-related autoantibodies including antibodies to citrullinated protein antigens (ACPA).…
Abstract Number: 0743 • ACR Convergence 2020
Higher Baseline Fine-Specificity ACPAs Predict Greater Treatment Response with Abatacept + MTX versus MTX Monotherapy in Seropositive RA: A Post Hoc Analysis
William Robinson¹, Chun Wu², Sarah Hu², Sean Connolly² and Sumanta Mukherjee², ¹Stanford University School of Medicine, Stanford, CT, ²Bristol-Myers Squibb Company, Princeton, NJ
Background/Purpose: ACPAs are sensitive, highly specific markers of RA. Current tests cannot differentiate ACPA+ RA subtypes. Fine-specificity ACPAs (FS) can distinguish between ACPA+ RA subtypes…
Abstract Number: 1721 • ACR Convergence 2020
Increasing Autoantibody Positivity During Pre-RA Is Associated with the Imminent Development of Classifiable RA
Heinrich-Karl Greenblatt¹, Ted Mikuls², Jess Edison³, Marie Feser⁴, Mark Parish⁵, LauraKay Moss⁵, Elizabeth Mewshaw⁶ and Kevin D. Deane⁷, ¹University of Colorado School of Medicine, Aurora, CO, ²University of Nebraska Medical Center, Omaha, NE, ³Walter Reed National Military Medical Center, Bethesda, ⁴Division of Rheumatology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA, Colorado, ⁵University of Colorado Anschutz Medical Campus, Aurora, CO, ⁶Walter Reed National Military Medical Center, Bethesda, MD, ⁷2 Division of Rheumatology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA, Colorado
Background/Purpose: Autoantibodies including rheumatoid factor (RF) and antibodies to citrullinated protein antigens (ACPA) may be elevated during a period that can be termed ‘Pre-RA’. In…

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