Abstracts tagged "autoantigens"

Abstract Number: 0886 • ACR Convergence 2025
A First-in-Class Biologic Selectively Targeting HLA-B27-Reactive T Cells in Ankylosing Spondylitis
Patrick Holec, Megan Reitars, Nishant Singh and Isabelle Larsen, Fletcher Biosciences, Cambridge, MA
Background/Purpose: Ankylosing spondylitis (AS), a chronic autoimmune disease strongly associated with HLA-B27:05, is currently managed with therapies that broadly suppress inflammation instead of targeting disease-driving…
Abstract Number: 1858 • ACR Convergence 2025
Antinuclear Antibodies from Systemic Sclerosis Patients Enter Cells via a Clathrin Endocytosis Mechanism and Interact with their Intracellular Antigen.
Aurélien Chepy¹, Marie-Elise Martel¹, Solange Vivier¹, Meryem Tardivel², Antonino Bongiovanni², Marie Mistretta¹, Maxime Secq¹, Lucile Guilbert³, Eric HACHULLA⁴, Sylvain Dubucquoi⁵, David Launay¹ and Vincent Sobanski¹, ¹Univ. Lille, Inserm, CHU Lille, U¹²⁸⁶ - INFINITE - Institut de Recherche Translationnelle en Inflammation, Lille, France., Lille, France, ²Univ. Lille, BioImaging Center Lille-Nord de France (BICeL), Lille, France., Lille, France, ³CHU Lille, Institut d'Immunologie, Lille, France., Lille, France, ⁴CHU Lille, Département de Médecine Interne et Immunologie Clinique, Centre de Référence des Maladies Auto-Immunes et Auto-Inflammatoires Rares du Nord, Nord-Ouest, Méditerranée et Guadeloupe (CeRAINOM), Lille, France, Lille, France, ⁵Univ. Lille, Inserm, CHU Lille, U¹²⁸⁶ – INFINITE – Institute for Translational Research in Inflammation, Lille, France ; CHU Lille, Institut d’Immunologie, Lille, France, Lille, France
Background/Purpose: Antinuclear autoantibodies (ANA) are robust biomarkers for the diagnosis and prognosis of systemic sclerosis (SSc), but their role in pathogenesis is still uncertain. Recent…
Abstract Number: 0862 • ACR Convergence 2025
In immune-mediated necrotising myopathy, anti-HMGCR antibodies inhibit HMGCR activity, leading to the sarcoplasmic accumulation of lipid droplets and myofibres necrosis
Margherita Giannini¹, Giulia Quiring², Mustapha Oulad-Abdelghani³, Béatrice Lannes¹, Yves Allenbach⁴, Olivier Benveniste⁵, Olivier Boyer⁶, Aleksandra Nadaj Pakleza¹, Bernard Geny⁷ and Alain Meyer⁸, ¹Strasbourg University Hospital, Strasbourg, France, ²University of Strasbourg, Strasbourg, France, ³IGBMC, Strasbourg, France, ⁴SORBONNE UNIVERSITE, Paris, France, ⁵Sorbonne Uniersite, Hopital de la Pitie-Salpetriere, Paris, France, ⁶University of Rouen, Rouen, France, ⁷UR ³⁰⁷², Centre de Recherche en Biomédecine, Université de Strasbourg, Strasbourg; FranceExplorations fonctionnelles musculaires, Service de physiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg;, Strasbourg, Alsace, France, ⁸Service de Rhumatologie, Centre de référence des maladies auto-immunes rares (RESO), Hôpitaux Universitaires de Strasbourg, Strasbourg, Explorations fonctionnelles musculaires, Service de physiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, UR ³⁰⁷², Centre de Recherche en Biomédecine, Université de Strasbourg, Strasbourg; France, Strasbourg, Alsace, France
Background/Purpose: The aim of this study was to investigate whether in immune-mediated necrotising myopathy (IMNM), anti-HMGCR antibodies interfere with HMGCR activity and have a myopathic…
Abstract Number: 1779 • ACR Convergence 2025
Citrullinated and Malondialdehyde-Acetaldehyde Modified Fibrinogen Activates Macrophages and Induces Inflammatory Responses in Coronary Endothelium
Wenxian Zhou¹, Hannah Johnson², Michael Duryee², Engle Sharp², Carlos Hunter², Tate Johnson², Mabruka Alfaidi², Daniel Anderson³, Kishore Bidasee², Geoffrey Thiele² and Ted Mikuls², ¹University of Nebraska Medical Center, Bellevue, NE, ²University of Nebraska Medical Center, Omaha, NE, ^30587964, Durham, NC
Background/Purpose: Endothelial cell (EC) dysfunction is a key driver of cardiovascular (CV) complications in rheumatoid arthritis (RA), yet mechanisms underlying EC dysfunction in RA are…
Abstract Number: 0529 • ACR Convergence 2025
Anti-PeptidylArginine Deiminase-2 (anti-PAD2) Autoantibodies in Psoriatic Arthritis
Ana-Maria Orbai¹, Hong Wang², Maria Grecu³, Ning Meng⁴, Ji Soo Kim⁵, Clifton Bingham⁴, Uzma Haque², John Miller⁴, Felipe Andrade², Erika Darrah⁶ and Eleni Tiniakou⁷, ¹Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³River Hill High School, Clarksville, MD, ⁴Johns Hopkins University, Baltimore, MD, ⁵Johns Hopkins, Baltimore, MD, ⁶Astra Zeneca, Gaithersburg, MD, ⁷UT Health Science Houston, Houston, TX
Background/Purpose: Citrullinated cathelicidin (LL37), a human-derived antimicrobial peptide, is an autoantigen in psoriatic arthritis (PsA).1 LL37 citrullination by peptidylarginine deiminase (PAD) enzymes attenuates immune activation…
Abstract Number: 1684 • ACR Convergence 2025
Integration of Multiple Spatial Transcriptomics Reveals Novel Insights into Sjogren Disease Salivary Gland Fibroblast by Peripheral Serostatus
Zhou Fang¹, Ahmet Coskun¹ and Sara McCoy², ¹Georgia Tech, Atlanta, ²University of Wisconsin–Madison, Madison, WI
Background/Purpose: Anti-SSA antibody positive (SSA+ [Ro52 or Ro60]) and negative (SSA-) Sjögren disease (SjD) have differing clinical phenotypes and prognostic features; however, the pathogenesis driving…
Abstract Number: 0065 • ACR Convergence 2025
Expression and Co-Localization of Malondialdehyde-Acetaldehyde and Citrullinated Proteins in Myocardial Tissues Precedes the Development of Cardiac Fibrosis in Collagen-Induced Arthritis
Wenxian Zhou¹, Hannah Johnson², Michael Duryee², Ali Namvaran³, Julian Garcia², Carlos Hunter², Tate Johnson², Daniel Anderson⁴, Kishore Bidasee², Geoffrey Thiele² and Ted Mikuls², ¹University of Nebraska Medical Center, Bellevue, NE, ²University of Nebraska Medical Center, Omaha, NE, ³University of Nebraska Medical Center, Omaha, ^40587964, Durham, NC
Background/Purpose: Patients with rheumatoid arthritis (RA) experience increased morbidity and mortality due to heart failure with preserved ejection fraction (HFpEF), a condition characterized by diastolic…
Abstract Number: 1650 • ACR Convergence 2025
Malondialdehyde-Acetaldehyde and Citrulline Modified Proteins are Overexpressed in Cardiac Tissues in Rheumatoid Arthritis-Associated Heart Failure and Mediate Endothelial Cell Dysfunction
Hannah Johnson¹, Wenxian Zhou², Michael Duryee¹, Engle Sharp¹, Kimberley Sinanan¹, Carlos Hunter¹, Tate Johnson¹, Mabruka Alfaidi¹, Daniel Anderson³, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ^30587964, Durham, NC
Background/Purpose: Previous reports show that malondialdehyde-acetaldehyde (MAA) adducts are overexpressed in RA, especially in joint/lung tissues, and that they colocalize with citrulline (CIT). This is…
Abstract Number: 1764 • ACR Convergence 2024
Reduction in Circulating Neutrophil Extracellular Traps and Restored Degradation Post-treatment in Pediatric Lupus
Tatiana Borja¹, Bharati Matta², Lydia Thomas³, Jenna Battaglia⁴, Amanda Huang⁵, Kim Simpfendorfer⁶, Hongxiu Wen⁵, Joyce Hui-Yuen⁷, Boris Reizis⁸, Sohei Makita⁸ and Betsy Barnes⁵, ¹Northwell- Cohen Children's Medical Center, Elmhurst, NY, ²The Feinstein Institutes for Medical Research, Manhasset, NY, ³Northwell Health - Cohen Children's Medical Center, Lake Success, NY, ⁴Feinstein Institutes for Medical Science, Manhasset, ⁵Feinstein Institutes for Medical Science, Manhasset, NY, ⁶Feinstein Institutes for Medical Research, Manhasset, NY, ⁷Northwell Health, Cohen Children's Medical Center, Great Neck, NY, ⁸New York University Grossman School of Medicine, New York, NY
Background/Purpose: Pediatric lupus (pSLE) is a multisystemic, chronic, autoimmune disease in which over 50% of pSLE patients develop lupus nephritis (pLN). Neutrophil extracellular traps (NETs)…
Abstract Number: 1855 • ACR Convergence 2024
Identification of Autoreactive Cytotoxic T Cells in ANCA-Associated Vasculitis
Laura van Dam¹, Shady Younis², Jae-Seung Moon³, Mengrui Zhang⁴, Shima Parfasar⁴, Audra Horomanski³, orr Sharpe³, Jolijn van Leeuwen⁵, Tobias Lanz⁴, Cees van Kooten⁶, Onno Teng⁷ and William Robinson⁸, ¹Stanford, Palo Alto, CA, ²Stanford University, Stanford, CA, ³Department of Immunology and Rheumatology, Stanford University, Stanford, CA, ⁴Department of Immunology and Rheumatology, Stanford University, Stanford, ⁵Department of Nephrology, Leiden University Medical Center, Leiden, Netherlands, ⁶Department of Nephrology, Leiden University Medical Center, Leiden, ⁷Leiden University Medical Center, Leiderdorp, Netherlands, ⁸Division of Immunology and Rheumatology, Stanford University, and VA Palo Alto Health Care System, Stanford, CA
Background/Purpose: Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a rare and severe autoimmune disease, characterized by a pauci-immune necrotizing vasculitis leading to inflammation and damage…
Abstract Number: 1858 • ACR Convergence 2024
Co-modification of Citrullinated Proteins with Malondialdehyde-Acetaldehyde Leads to Amplified T Cell Responses and Increased Disease-specific Autoantibody Concentrations
Breanna Butler¹, Wenxian Zhou², Michael Duryee¹, Nozima Aripova¹, Engle Sharp¹, Carlos Hunter¹, Bridget Kramer¹, Harlan Sayles¹, James O'Dell¹, Geoffrey Thiele¹, Bryant England¹, Joshua Baker³, Andreas Reimold⁴, Gail Kerr⁵ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ³University of Pennsylvania, Philadelphia, PA, ⁴Dallas VA Medical Center, Dallas, TX, ⁵Washington DC VAMC/Georgetown and Howard Universities, Washington, DC
Background/Purpose: Anti-citrullinated protein antibody (ACPA) is highly specific to rheumatoid arthritis (RA). Beyond citrullination, other post-translational protein modifications including malondialdehyde-acetaldehyde (MAA) are targeted by T…
Abstract Number: 1866 • ACR Convergence 2024
Identification of Sjögren’s Disease-Associated CD4+ T Cell Receptor (TCR) Motifs and Repertoire Landscape Through TCR Deep Sequencing
Ananth Aditya Jupudi¹, Michelle L. Joachims², Christina Lawrence², Charmaine Lopez-Davis², Bhuwan Khatri², Astrid Rasmussen², Kiely Grundahl², Robert Hal Scofield², Judith James², Joel Guthridge², Christopher Lessard², Linda F. Thompson² and A. Darise Farris², ¹University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Sjögren’s disease (SjD) is a chronic rheumatic autoimmune disorder characterized by focal lymphocytic infiltration of the lacrimal and salivary glands (SG). CD4+ T cells…
Abstract Number: 1879 • ACR Convergence 2024
Prevalence of Relapsing Polychondritis in Colombia: Data from the National Health Registry 2018 – 2023
Mario Bautista-Vargas¹, Adrian Romero-Ocampo², Juan José Pino Vélez³, juliana Muñoz-Bedoya⁴ and Diego Rosselli⁵, ¹Mayo Clinic, Rochester, Minnesota, USA., Rochester, MN, ²Universidad de Antioquia, Medellín – Colombia, Medellin, Antioquia, Colombia, ³Universidad de Antioquia, Envigado, Antioquia, Colombia, ⁴Universidad Corpas, Bogotá, Colombia, ⁵Pontificia Universidad Javeriana, Bogotá, Colombia
Background/Purpose: The implementation of the SISPRO system enables it to function as a tool capable of collecting pertinent health system data. This information is publicly…
Abstract Number: 0009 • ACR Convergence 2024
Comprehensive Autoantibody Profiling Highlights Clinical Relevance of Autoantibodies to G Protein-coupled Receptors in Systemic Sclerosis: Insights from a B-cell Depletion Clinical Trial
Kazuki Matsuda, Shinichi Sato and Ayumi Yoshizaki, The University of Tokyo, Tokyo, Japan
Background/Purpose: Systemic sclerosis (SSc) affects the skin and internal organs with a poor prognosis. While the exact cause remains unclear, increasing evidence indicates that B…
Abstract Number: 2391 • ACR Convergence 2024
Identification of Patients with ANA Negative and Double Stranded DNA Positive: What Is the Significance in Daily Rheumatology Practise
Güllü Sandal Uzun¹, Emily Apsley² and David Isenberg², ¹University College London, London, England, United Kingdom, ²University College London, London, United Kingdom
Background/Purpose: The anti-nuclear antibody (ANA test) is a sensitive screening tool used when assessing patients with possible autoimmune rheumatic diseases (ARD). Homogeneous staining positivity is…

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