Abstracts tagged "Autoantibody(ies)"

Abstract Number: 2232 • ACR Convergence 2024
Anti-RA33 Autoantibodies Are Unique, Sensitive Biomarkers for the Identification of Seronegative Rheumatoid Arthritis in a U.S. Cohort
Andrew Concoff¹, Touba Warsi², Sepehr Taghavi², Sudha Kumar², Abigail Patalinghug², Christine Schleif², Brittany Partain³, Joseph Ahearn⁴, Nicole Wilson⁵, Susan Manzi⁵, Veena Joy⁶ and Tyler O'Malley⁷, ¹Exagen, Inc., Los Angeles, CA, ²Exagen, Carlsbad, CA, ³Exagen, Boston, MA, ⁴Allegheny Health Network, Wexford, PA, ⁵Allegheny Health Network, Pittsburgh, PA, ⁶ThermoFisher, Philadelphia, PA, ⁷Exagen, Vista, CA
Background/Purpose: Novel autoantibodies (Ab) capable of identifying unique subgroups of seronegative rheumatoid arthritis (SN-RA) while providing specificity for RA comparable to ACPA reflects an opportunity…
Abstract Number: 2667 • ACR Convergence 2024
Anti-Mi2 Autoantibodies in Dermatomyositis Patients Also Recognize Autoimmune Regulator (AIRE) Protein
Jon Musai¹, Sahana Jayaraman², katherine Pak³, Iago Pinal-Fernandez⁴, Sandra Muñoz-braceras⁵, Maria Casal-Dominguez⁶, Eric Cho⁵, Fa'alataitaua Fitisemanu⁵, jose milisenda⁷, Lisa Rider⁸, Adam Schiffenbauer³, Albert Selva-O’Callaghan⁹, Thomas E Lloyd¹⁰, Lisa Christopher-Stine¹¹, Peter Burbelo¹², Benjamin Larman¹¹ and Andrew Mammen¹³, ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³National Institutes of Health, Bethesda, MD, ⁴NIAMS/National Institutes of Health, Bethesda, MD, ⁵National Institute of Arthritis and Musculoskeletal and Skin Disease, Bethesda, MD, ⁶NIAMS, NIH, Bethesda, MD, ⁷Hospital Clinic de Barcelona, Barcelona, Spain, ⁸NIEHS, NIH, Garrett Park, MD, ⁹Systemic Autoimmune Disease Unit, Vall d’Hebron Institute of Research, Barcelona, Spain, ¹⁰Johns Hopkins University School of Medicine, Lutherville, MD, ¹¹Johns Hopkins University, Baltimore, MD, ¹²National Institute of Dental and Craniofacial Research, Bethesda, MD, ¹³NIH, Bethesda, MD
Background/Purpose: Many myositis patients have myositis-specific autoantibodies (MSA) that define unique clinical phenotypes. For instance, dermatomyositis (DM) patients with anti-Mi2 autoantibodies have weaker muscles, higher…
Abstract Number: 0110 • ACR Convergence 2024
Binding Characteristics of Patient Clusters Among Anticardiolipin and Anti-β2-Glycoprotein I ELISA and Non-ELISA Assays: A Survey by the Association of Medical Laboratory Immunologists
Rohan Willis¹, Vijaya Murthy², Karen Roye-Green³, Amy Thees⁴, May Choi⁵, Ken Dier⁶, Marvin Fritzler⁷, Susan Fink⁸, Vijayalakshmi Nandakumar⁹, Melissa Snyder¹⁰ and Anne Tebo¹¹, and the Association of Medical Laboratory Immunologists, ¹University of Texas Medical Branch, Galveston, TX, ²University of Texas Medical Branch (UTMB), League City, TX, ³University of the West Indies, Kingston, Jamaica, ⁴Clinical Immunology Laboratory, Rosalind Franklin University of Medicine and Science, North Chicago, IL, ⁵University of Calgary, Calgary, AB, Canada, ⁶Corgenix, Broomfield, CO, ⁷Mitogen Diagnostics Corp, Calgary, AB, Canada, ⁸Clinical Immunology Laboratory, University of Washington Medical Center, Seattle, WA, ⁹ARUP/University of Utah, Salt Lake City, UT, ¹⁰Clinical Biochemistry and Immunology, Antibody Immunology Laboratory, Mayo Clinic, Rochester, MN, ¹¹Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
Background/Purpose: We have recently shown that anti-phospholipid (APL) assays of varying methodology demonstrate comparable analytical performance despite variable levels of agreement among individual analytes, identifying binding…
Abstract Number: 0608 • ACR Convergence 2024
Systematic Analysis Demonstrates the Added Value of CB-CAPs to SLE Diagnosis in a Large Validation Cohort
Andrew Concoff¹, Touba Warsi², Sepehr Taghavi², Sudha Kumar², Abigail Patalinghug², Christine Schleif², Brittany Partain³, Joseph Ahearn⁴, Chau-Ching Liu⁵, Nicole Wilson⁵, Susan Manzi⁵ and Tyler O'Malley⁶, ¹Exagen, Inc., Los Angeles, CA, ²Exagen, Carlsbad, CA, ³Exagen, Boston, MA, ⁴Allegheny Health Network, Wexford, PA, ⁵Allegheny Health Network, Pittsburgh, PA, ⁶Exagen, Vista, CA
Background/Purpose: Cell bound complement activation products (CB-CAPs) including erythrocyte-bound C4d (EC4d) and B-lymphocyte C4d (BC4d) demonstrate increased diagnostic accuracy compared to conventional SLE markers (anti-dsDNA,…
Abstract Number: 0988 • ACR Convergence 2024
Antinuclear Antibody Positivity and Its Diagnostic Implications for Rheumatic Diseases in Dermatology Patients: A Comprehensive Single Center Analysis
Yunjung Choi¹, Myeung-Su Lee² and Wan-Hee Yoo³, ¹Jeonbuk National University Medical School, Deokjin-gu, Jeollabuk-do, Republic of Korea, ²Wonkwang University Hospital, Iksan, South Korea, ³CHONBUK NATIONAL UNIVERSITY HOSPITAL, JEONJU, Republic of Korea
Background/Purpose: Cutaneous manifestations are common in rheumatic diseases and can be early indicators. This study investigates the prevalence of rheumatic diseases diagnosed through ANA (Antinuclear…
Abstract Number: 1526 • ACR Convergence 2024
Utilizing Electronic Health Records to Identify Clinical Features of ANA-Positive Patients Imparting High Risk for Progression to Systemic Lupus Erythematosus
Havell Markus¹, Chachrit Khunsriraksakul¹, Galen Foulke², Laura Carrel¹, Nancy Olsen³ and Dajiang Liu¹, ¹Penn State College of Medicine, Hershey, PA, ²Penn State Health, Hershey, PA, ³Penn State University/Milton S Hershey, Hershey, PA
Background/Purpose: Systemic lupus erythematosus (SLE) is a severe and heterogeneous autoimmune disease. SLE is often preceded by a stage with milder symptoms and positive antinuclear…
Abstract Number: 1776 • ACR Convergence 2024
Animal Models of Pediatric MOGAD
Yike Jiang¹, Elliot Lin², Estefany Reyes², Devon DiPalma², Sundar Khadka², Heather Van Mater² and Mari Shinohara², ¹Duke Univerisity, Durham, NC, ²Duke University, Durham, NC
Background/Purpose: Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a devastating demyelinating disease that disproportionally affects children. Discovered in 2018, MOGAD is now internationally recognized as…
Abstract Number: 0110 • ACR Convergence 2023
Neutrophil Extracellular Traps as Mediators of Antiphospholipid Antibody-Induced Trophoblast Dysfunction and Fetal Loss
Christine Rysenga, Srilakshmi Yalavarthi, Wenying Liang, Claire Hoy, Cyrus Sarosh, Richard Lieberman, Yu Zuo and Jason Knight, University of Michigan, Ann Arbor, MI
Background/Purpose: Antiphospholipid antibodies (aPL) induce obstetric complications associated with placental insufficiency by promoting trophoblast dysfunction and inflammation at the maternal-fetal interface. Neutrophils have been found…
Abstract Number: 0624 • ACR Convergence 2023
Outcomes in Systemic Sclerosis-Associated Interstitial Lung Disease (SSc-ILD) Based on Serological Profiles: Focus on Anti-Centromere Antibody (ACA) and Anti-RNA Polymerase III (ARA) Antibodies
Elizabeth Volkmann¹, Shervin Assassi², Christopher Denton³, Rozeta Simonovska⁴, Steven Sambevski⁵ and Elana Bernstein⁶, ¹University of California Los Angeles, Los Angeles, CA, ²University of Texas McGovern Medical School at Houston, Houston, TX, ³University College London, London, United Kingdom, ⁴Mainanalytics GmbH, Sulzbach (Taunus), Sulzbach, Germany, ⁵Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany, ⁶Division of Rheumatology, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY
Background/Purpose: Autoantibody profiles are associated with organ involvement and outcomes in patients with SSc. Anti-topoisomerase I antibody (ATA) positivity has been associated with a greater…
Abstract Number: 0951 • ACR Convergence 2023
Single Cell Analysis of Transitional B Cells in Systemic Sclerosis Highlights Defective Peripheral Tolerance
Claire Beesley¹, Nina Goldman¹, David Abraham¹, Christopher Denton¹, Rizgar Mageed² and Voon Ong³, ¹University College London, London, United Kingdom, ²Queen Mary University of London, London, United Kingdom, ³UCL Medical School Royal Free Campus, London, United Kingdom
Background/Purpose: Transitional B cells comprise a distinct population of B cells that have recently migrated to the periphery from the bone marrow. In systemic sclerosis…
Abstract Number: 1493 • ACR Convergence 2023
Novel BCMA-CD19 Compound CAR-T (cCAR) Targets B Cells and Plasma Cells Achieving Immune Reset and Eliminates All Autoantibodies in Systemic Lupus Erythematosus (SLE) and Lupus Nephritis (LN) Patients Resulting in Long-Term, Medication-Free Remission
Yong Yuan¹, Shanzhi He¹, Wenli Zhang², Hongyu Zhang², Vincent DeStefano³, Masayuki Wada³, Kevin Pinz³, Greg Deener³, Yu Ma⁴, Min Wang¹, Fugui Li¹, Ming Hong¹, Chanjuan Zou¹, Mingxia Wang¹, Ling Ding¹, Yingwen Liang¹, Yupo Ma³ and Weijia Wang¹, ¹Zhongshan People’s Hospital, Zhongshan, China, ²Peking University Shenzhen Hospital, Shenzhen, China, ³iCell Gene Therapeutics Inc., Stony Brook, NY, ⁴iCAR Bio Therapeutics Ltd, Zhongshan, China
Background/Purpose: Evaluate cCAR safety in SLE, LN and autoimmune conditions. Determine whether a single dose eliminates autoantibodies with well tolerated long-term, medication-free remission in open…
Abstract Number: 1960 • ACR Convergence 2023
From Clinical Amyopathy to Severe Oropharyngeal Dysphagia in Pure Dermatomyositis: A Greater Extent of Muscle Weakness Is Associated with a Higher Cancer Prevalence
Hao Cheng Shen¹, Victoria Ivensky², Yves Troyanov³, Josiane Bourre-Tessier¹, Farah Zarka², Sabrina Hoa⁴, Jessica Nehme², Jean-Paul Makhzoum⁵, Anne-Marie Mansour², Rosalie-Selene Meunier², Alexandra Mereniuk², Darosa Lim⁶, Jean-Pierre Raynauld¹, Eric Rich¹, Jean-Richard Goulet¹, Marianne Landry⁷, Maude Bouchard-Marmen⁸, Valerie Leclair⁹, Hugues Allard-Chamard¹⁰, Marie Hudson¹¹, Erin O'Ferrall¹², Rami Massie¹², Jason Karamchandani¹³, Benjamin Ellezam¹⁴, Ira N. Targoff¹⁵, Minoru Satoh¹⁶, Marvin Fritzler¹⁷, Jean-Luc Senecal¹, Alain Meyer¹⁸ and Oceane Landon-Cardinal¹, ¹Centre hospitalier de l'Université de Montréal (CHUM), Université de Montréal, Montréal, QC, Canada, ²Hôpital du Sacré-Coeur de Montréal, Université de Montréal, Montreal, QC, Canada, ³Hôpital du Sacré-Coeur de Montréal, Centre hospitalier de l'Université de Montreal (CHUM), Université de Montréal, Montreal, QC, Canada, ⁴University of Montreal, Brossard, QC, Canada, ⁵Vasculitis Clinic, Canadian Network for Research on Vasculitides, Hopital du Sacre-Coeur de Montreal, Montreal, QC, Canada, ⁶University of Pennsylvania, Philadelphia, PA, ⁷Hôpital de LaSalle, Montreal, QC, Canada, ⁸CHU de Québec, Université Laval, Quebec City, QC, Canada, ⁹Jewish General Hospital, McGill University, Montreal, QC, Canada, ¹⁰Université de Sherbrooke, Sherbrooke, QC, Canada, ¹¹McGill University, Montréal, QC, Canada, ¹²Montreal Neurological Institute, McGill University, Montreal, QC, Canada, ¹³McGill University Health Center (MUHC), McGill University, Montreal, QC, Canada, ¹⁴CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada, ¹⁵Veteran's Affairs Medical Center, University of Oklahoma Health Sciences Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, ¹⁶University of Occupational and Environmental Health, Kitakyushu, Japan, ¹⁷University of Calgary, Calgary, AB, Canada, ¹⁸Hôpitaux Universitaires de Strasbourg, Strasbourg, France
Background/Purpose: The risk of cancer is increased in patients with pure dermatomyositis (DM), i.e. patients with a DM rash and without an anti-MDA-5 syndrome, a…
Abstract Number: 2490 • ACR Convergence 2023
Safety and Efficacy of Mycophenolate Mofetil in New-onset Systemic Lupus Erythematosus with High Titer of Anti-dsDNA Antibody and Without Major Organ Involvement: A Multicenter Randomized Controlled Trial
Junna Ye¹, Yijun You², Zhuochao Zhou², Jingyi Wu², Fan wang² and Chengde Yang², ¹Ruijin Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China, ²Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
Background/Purpose: Previous clinical trials of mycophenolate mofetil (MMF) in SLE were mainly focused on lupus nephritis (LN) (patients have been diagnosed with LN). In the…
Abstract Number: 0130 • ACR Convergence 2023
Association of HLA-DRB1 Alleles with Coronary Artery Calcium, Abdominal Aortic Calcium, and Carotid Intima-media Thickness in a Multi-ethnic Community-living Population
Manmeet Kaur¹, Ronit Katz², Michael H. Criqui¹, Maripat Corr³, Wendy S. Post⁴, Matthew Budoff⁵, Gerald P. Morris³ and Jan M. Hughes-Austin³, ¹University of California San Diego, San Diego, CA, ²University of Washington, Seattle, WA, ³University of California San Diego, La Jolla, CA, ⁴Johns Hopkins University School of Medicine, Baltimore, MD, ⁵Harbor-UCLA Medical Center, Torrance, CA
Background/Purpose: Human leukocyte antigen (HLA) DRB1 alleles with specific common amino acids referred to as the shared epitope (SE) have been linked to endothelial dysfunction…
Abstract Number: 0646 • ACR Convergence 2023
Racial Variability in Immune Responses Only Partially Explains Differential Systemic Sclerosis Disease Severity
Kamini Kuchinad¹, Ji Soo Kim¹, Adrianne Woods¹, Gwen Leatherman¹, Laura Gutierrez², Maureen Mayes³, Robyn Domsic⁴, Paula Ramos⁵, Richard Silver⁵, John Varga⁶, Lesley Ann Saketkoo⁷, Suzanne Kafaja⁸, Victoria Shanmugam⁹, Jessica Gordon¹⁰, Lorinda Chung¹¹, Elana Bernstein¹², Pravitt Gourh¹³, Francesco Boin¹⁴, Daniel Kastner¹⁵, Scott Zeger¹⁶, Livia Casciola-Rosen¹, Fred Wigley¹ and Ami Shah¹⁷, ¹Department of Rheumatology, Johns Hopkins Medicine, Baltimore, MD, ²Johns Hopkins Medicine, Baltimore, MD, ³Division of Rheumatology, University of Texas McGovern Medical School, Houston, TX, ⁴University of Pittsburgh, Pittsburgh, PA, ⁵Medical University of South Carolina, Charleston, SC, ⁶University of Michigan, Ann Arbor, MI, ⁷University Medical Center - Comprehensive Pulmonary Hypertension Center and ILD Clinic Programs // New Orleans Scleroderma and Sarcoidosis Patient Care & Research Centeris, New Orleans, LA, ⁸UCLA Department of Medicine, Division of Rheumatology, Los Angeles, CA, ⁹Victoria Shanmugam, MD, Great Falls, VA, ¹⁰Hospital for Special Surgery, New York, NY, ¹¹Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Woodside, CA, ¹²Columbia University, New York, NY, ¹³National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, ¹⁴Cedars-Sinai Medical Center, Los Angeles, CA, ¹⁵National Human Genome Research Institute, Bethesda, MD, ¹⁶Johns Hopkins University, Baltimore, MD, ¹⁷Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Ellicott City, MD
Background/Purpose: Individuals with self-identified Black race have a higher incidence of systemic sclerosis (SSc), develop SSc at a younger age, and have a more severe…

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