Abstracts tagged "Myopathies"

Abstract Number: 0995 • ACR Convergence 2020
Jo-1-Binding B Cells Undergo Limited Class-Switching but Are Biased Towards Autoreactive-Prone and Memory B Cell Subsets in Anti-histidyl-tRNA Synthetase Syndrome
Jennifer Young-Glazer¹, Alberto Cisneros², Erin Wilfong¹, Scott Smith¹, Leslie J. Crofford¹ and Rachel Bonami¹, ¹Vanderbilt University Medical Center, Nashville, TN, ²Vanderbit University Medical Center, Nashville, TN
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are systemic autoimmune diseases traditionally classified as dermatomyositis or polymyositis, but these disorders are increasingly defined by the presence of…
Abstract Number: 1098 • ACR Convergence 2020
Anti-cortactin Autoantibodies Are Associated with Key Clinical Features in Adult Myositis but Are Rarely Present in Juvenile Myositis
Iago Pinal-Fernandez¹, Katherine Pak², Albert Gil-Vila³, Andres Baucells⁴, Benjamin Plotz⁵, Maria Casal-Dominguez⁶, Assia Derfoul⁷, Maria Angeles Martinez⁴, Albert Selva-O'Callaghan³, Sara Sabbagh⁸, Frederick W. Miller¹, Lisa G. Rider⁹, Lisa Christopher-Stine¹⁰ and Andrew Mammen⁶, ¹National Institutes of Health, Bethesda, MD, ²NIAMS, NIH, Bethesda, MD, ³Vall d’Hebron Hospital, Barcelona, Spain, ⁴Sant Pau Hospital, Barcelona, Spain, ⁵Division of Rheumatology, New York University Langone Health, New York, NY, ⁶NIH, Bethesda, MD, ⁷NIAMS, NIH, Bethesda, ⁸Division of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Washington, DC, ⁹Environmental Autoimmunity Group, Clinical Research Branch, NIEHS, NIH, Garrett Park, MD, ¹⁰Johns Hopkins University, Baltimore, MD
Background/Purpose: To define the prevalence and clinical phenotype of anti-cortactin autoantibodies in adult and juvenile myositis.Methods: In this longitudinal cohort study, anti-cortactin autoantibody tiers were…
Abstract Number: 1057 • ACR Convergence 2020
Earlier Cancer Diagnosis After Idiopathic Inflammatory Myopathy Onset Is Associated with Improved Long Term Survival – Results from Four European Cohorts
Alexander Oldroyd¹, Paul New², Janine Lamb¹, William Ollier¹, Robert Cooper², Kuberacka Mariampillai³, Olivier Benveniste³, Jiří Vencovský⁴, Heřman Mann⁵, Zoltan Griger⁶, Melinda Nagy-Vincze⁶, Katalin Dankó⁶ and Hector Chinoy⁷, ¹University of Manchester, Manchester, United Kingdom, ²University of Liverpool, Liverpool, United Kingdom, ³Sorbonne Université, Paris, France, ⁴Institute of Rheumatology and Department of Rheumatology, First Faculty of Medicine, Charles University, Prague, Czech Republic, ⁵Institute of Rheumatology, Prague, Czech Republic. Department of Rheumatology, 1st Faculty of Medicine, Charles University, Prague, Czech Republic, Prague, Czech Republic, ⁶University of Debrecen, Debrecen, Hungary, ⁷The University of Manchester, Manchester, United Kingdom
Background/Purpose: The idiopathic inflammatory myopathies (IIMs) are strongly associated with the development of clinically detectable cancer. Cancer screening has therefore been advocated in newly diagnosed…
Abstract Number: 1060 • ACR Convergence 2020
B-cell-rich Inflammatory Myopathies in Adults: Striking Association with Connective Tissue Diseases
Pat Korathanakhun¹, Océane Landon-Cardinal², Valérie Leclair³, Benjamin Ellezam⁴, Alain Meyer⁵, Josiane Bourré-Tessier², Anne-Marie Mansour⁶, Sandrine Larue⁷, François Grand'Maison⁷, Rami Massie⁸, Matthieu Le Page⁹, Catherine Isabelle⁷, Nathalie Routhier⁶, Flavie Roy¹⁰, Minoru Satoh¹¹, Marvin Fritzler¹², Jean-Luc Senécal², Yves Troyanov¹³, Marie Hudson³, Jason Karamchandani¹⁴ and Erin O'Ferrall⁸, ¹Montreal Neurological Institute and Hospital, Montreal, QC, Canada, ²Division of Rheumatology, Centre hospitalier de l'Université de Montréal, Montréal, QC, Canada, ³Division of Rheumatology, Jewish General Hospital, Montréal, QC, Canada, ⁴Division of Pathology, Centre hospitalier universitaire Sainte-Justine, Montréal, QC, Canada, ⁵Service de rhumatologie et Centre de références des maladies autoimmunes rares, Hôpitaux universitaires de Strasbourg, Strasbourg, France, ⁶Hôpital du Sacré-Coeur de Montréal, Montreal, QC, Canada, ⁷Hôpital Charles-Lemoyne, Longueuil, QC, Canada, ⁸Department of Neurology and Neurosurgery, Montreal Neurological Institute and Hospital, Montreal, QC, Canada, ⁹Centre hospitalier de Lanaudière, Saint-Charles-Borromée, QC, Canada, ¹⁰Uiversité de Montréal, Montreal, QC, Canada, ¹¹Department of Clinical Nursing, University of Occupational and Environmental Health, Kitakyushu, Japan, ¹²Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada, ¹³Division of Rheumatology, Hôpital du Sacré-Coeur, Montréal, QC, Canada, ¹⁴Department of Pathology, Montreal Neurological Institute and Hospital, Montreal, QC, Canada
Background/Purpose: Myositis with significant B-cell infiltrates on muscle biopsy has scarcely been described in adults. Radke (2018) found B cells in adult dermatomyositis (DM) and…
Abstract Number: 1061 • ACR Convergence 2020
Daily Myositis Symptom Changes Collected via a Smartphone-Based App Are Associated with Flare Occurrence – Providing Evidence of Potential Digital Biomarkers
Alexander Oldroyd¹, Belay Yimer², Max Little³, William Dixon² and Hector Chinoy⁴, ¹University of Manchester, Manchester, United Kingdom, ²Centre for Epidemiology Versus Arthritis, University of Manchester, Manchester, United Kingdom, ³University of Birmingham, Birmingham, United Kingdom, ⁴The University of Manchester, Manchester, United Kingdom
Background/Purpose: The concept of idiopathic inflammatory myopathy (IIM) flare is widely used, although no consensus definition exists. Studies have demonstrated the feasibility and utility of…

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