Abstracts tagged "Autoantibody(ies)"

Abstract Number: 1330 • ACR Convergence 2025
Sex and reproductive stage modify the role of endogenous estrogens on coronary atherosclerosis in rheumatoid arthritis and differences reflect effects on inflammation and cholesterol metabolism
George Karpouzas¹, Bianca Papotti², Sarah Ormseth³, Marcella Palumbo², Matthew Budoff¹ and Nicoletta Ronda², ¹Harbor-UCLA Medical Center, Torrance, CA, ²University of Parma, Parma, Italy, ³The Lundquist Institute for Biomedical Innovation, Torrance, CA
Background/Purpose: Endogenous estrogens associate with cardioprotective benefits in the general population. Yet, dual pro- and anti-inflammatory effects were described in autoimmune states depending on concentration,…
Abstract Number: 0711 • ACR Convergence 2025
Analytical Performance of a Novel, Fully Automated Multiplexed Microarray Immunoassay Prototype for the Simultaneous Detection of Autoantibodies to GBM, PR3, and MPO: A Multicenter Evaluation
Natalia Swierczynska¹, Ruaridh Armour¹, Anthony Yau¹, Enn Rusi¹, Mark Hooper¹, Jason Sillitoe², Caroline Wilson², Paula Griffiths³, Tariq El-Shanawany³, Faye Sims⁴, Gerber Gomez⁵, Christian Fischer⁵, Michael Hausmann⁶ and Helen Laird¹, ¹Research & Development, AliveDx, Edinburgh, Scotland, United Kingdom, ²North East Innovation Lab, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, England, United Kingdom, ³Immunology Department, Laboratory Medicine, Swansea Bay University Health Board, UK. Cardiff and Vale UHB, Swansea, Wales, United Kingdom, ⁴Clinical Biochemistry and Immunology Department Peterborough City Hospital, North West Anglia NHS Foundation Trust, Peterborough, England, United Kingdom, ⁵Scientific & Medical Affairs, AliveDx Suisse SA, Eysins, Switzerland, ⁶AliveDx Suisse SA, Eysins, Switzerland
Background/Purpose: Anti-neutrophil cytoplasmic antibodies (ANCA), including those directed to myeloperoxidase (MPO) and proteinase 3 (PR3) as well as antibodies against anti-glomerular basement membrane (anti-GBM) are…
Abstract Number: 0531 • ACR Convergence 2025
Evaluating the Diagnostic Utility of 14-3-3 eta Autoantibodies in Axial Spondyloarthritis: A Multiplex Assay Approach
Anthony Marotta¹, Walter P. Maksymowych², Stephen Bleakley¹, Stephanie Wichuk³ and Norma Biln⁴, ¹Augurex Life Sciences Corp, Vancouver, BC, Canada, ²Department of Medicine, University of Alberta, ⁵⁶⁸ Heritage Building, Edmonton, AB, Canada, ³University of Alberta, Edmonton, AB, Canada, ⁴Augurex Life Sciences, Vancouver, BC, Canada
Background/Purpose: Novel biomarkers for axSpA are urgently needed to enable earlier diagnosis and improve patient outcomes. An assay for quantifying 14-3-3η autoantibodies (AAbs) has been…
Abstract Number: 0195 • ACR Convergence 2025
Utility of Repeat ANA Testing
Michael Luggen¹ and Sila Mateo Faxas², ¹University of Cincinnati College of Medicine, Cincinnati, OH, ²Good Samaritan Hospital, Cincinnati, OH
Background/Purpose: The ANA by immunofluorescence is a sensitive screening test for most systemic auto-immune rheumatic diseases (SARDs). A negative result is oftentimes sufficient to exclude…
Abstract Number: 2492 • ACR Convergence 2025
Autoantibody Profiles and Disease Trajectories in Early Systemic Sclerosis: Insights from a Prospective Cohort
Marzieh Jamali¹, Amisha Kaur¹, Suiyuan Huang¹, James St. Clair², John Varga¹, Carleigh Zahn², Erica Mulcaire-Jones¹, Alain Lescoat¹ and Dinesh Khanna¹, ¹University of Michigan, Ann arbor, MI, ²University of Michigan, Ann Arbor
Background/Purpose: Systemic sclerosis (SSc) is a rare autoimmune disease with high mortality. Early stratification by autoantibody (SSc-Ab) profile may inform prognosis and management, but data…
Abstract Number: 2236 • ACR Convergence 2025
Treatment-induced autoantibodies in Rheumatoid Arthritis patients receiving anti-TNF inhibitors or JAK inhibitors
EVRIPIDIS KALTSONOUDIS¹, Nikolaos Kougkas², Panagiota Karagianni³, Tereza Memi⁴, Nikolaos Koletsos⁵ and Eleftherios Pelechas⁶, ¹Rheumatology Clinic, University of Ioannina, IOANNINA, Ioannina, Greece, ²⁴th Department of Internal Medicine, Aristotle University, Thessaloniki, Thessaloniki, Greece, ³BioAcuHealth.gr, Ioannina, Ioannina, Greece, ⁴University Hospital of Ioannina, Ioannina, Ioannina, Greece, ⁵School of Health Sciences, Faculty of Medicine, University of Ioannina, Department of Rheumatology, Ioannina, Greece, Ioannina, Ioannina, Greece, ⁶Hatzikosta General Hospital of Ioannina, Ioannina, Ioannina, Greece
Background/Purpose: Rheumatoid arthritis (RA) can coexist with other autoimmune disorders such as Sjögren’s syndrome and systemic lupus erythematosus (SLE). In these cases, the terms secondary…
Abstract Number: 1726 • ACR Convergence 2025
Inflammatory arthritis immune related adverse events represent a unique autoimmune disease entity primarily driven by T cells, but likely not autoantibodies
Xingxing Zhu¹, yue Yu¹, Yangfen Li¹, Panwen wang², ying li², Chantal McCabe², shiju chen², Brenna Sharp², Amber Wolzen², Hannah Langenfeld¹, Andrew C. Hanson¹, Cynthia Crowson³, svetomir Markovic², John Davis¹, Haidong Dong², Uma Thanarajasingam¹ and Hu Zeng¹, ¹Mayo Clinic, Rochester, MN, ²Mayo Clinic, Rochester, ³Mayo Clinic, Stewartvillle, MN
Background/Purpose: The immunological basis of inflammatory arthritis (IA) immune related adverse event (irAE) following anti-PD-1/PD-L1 immune checkpoint inhibition (ICI) therapy is incompletely understood. The relationship…
Abstract Number: 1322 • ACR Convergence 2025
High Rheumatoid Factor Titers and Biologic Persistence in RA: Beyond TNF Inhibitors
Sara Salas Santamaría¹, Marta Chao Moreira², Manuel Juárez³, Marta Novella-Navarro², Pilar Nozal², Ana Martínez², Carolina Tornero⁴, Cristina Bohorquez⁵, Ana Sánchez², Carmen Cámara², Eduardo López², Eugenio de Miguel² and Chamaida Plasencia-Rodríguez², ¹Hospital Universitario La Paz, Miranda de Ebro, Castilla y Leon, Spain, ²Hospital Universitario La Paz, Madrid, Spain, ³Rheumatology Unit, Hospital Universitario La Paz, IdiPAZ, Madrid, Spain, ⁴Hospital La Paz, Madrid, Spain, ⁵La Paz University Hospital, Alcalá De Henares, Spain
Background/Purpose: Rheumatoid factor (RF), an autoantibody targeting the Fc portion of IgG, is one of the most studied biomarkers in rheumatoid arthritis (RA). High RF…
Abstract Number: 0701 • ACR Convergence 2025
Exploring Calcinosis On Hand X-Rays In Systemic Sclerosis: a Mayo Clinic Cohort
Maximiliano Diaz Menindez¹, Simran Ravindra Nimal², Michael Pham², Caroyln Harvey³, Leroy W. Griffing² and Vivek Nagaraja², ¹Mayo Clinic School of Graduate Medical Education, Phoenix, AZ, ²Mayo Clinic, Scottsdale, AZ, ³Mayo Clinic, Phoenix, AZ
Background/Purpose: Calcinosis is a vexing manifestation in patients with systemic sclerosis (SSc) with a variable prevalence among cohorts. Up to 86% of calcinosis cases 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: 0139 • ACR Convergence 2025
When One Isn’t Enough: Does Adding IgM Worsen the Antiphospholipid Syndrome Phenotype?
Santiago Dans Caballero¹, Massimo Radin², Chary López pedrera³, MARIA ANGELES AGUIRRE ZAMORANO⁴, Christian Merlo-Ruiz⁵, Ismael Sanchez-Pareja⁴, Irene Cecchi⁶ and Savino Sciascia⁷, ¹Reina Sofia University Hospital, Lebrija, Andalucia, Spain, ²University of Turin, Turin, Turin, Italy, ³Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Cordoba, Spain, ⁴Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Córdoba, Spain, ⁵Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Córdoba, Spain, ⁶University of Turin, Turin, Piemonte, Italy, ⁷University of Turin, Torino, Italy
Background/Purpose: Antiphospholipid syndrome (APS) is a systemic autoimmune disorder characterized by the persistent presence of antiphospholipid antibodies (aPL) along with clinical manifestations such as venous…
Abstract Number: 2491 • ACR Convergence 2025
High Prevalence of Autoimmunity and Cancer in Anti-NOR90-positive Patients: A Multicenter Observational Study
Marina Dueñas-Ochoa¹, Cristina Valero², Francisco Morandeira³, Juan Carlos Sáez¹, Maryia Nikitsina⁴, Montserrat Roig Kim⁵, Laia De Daniel Bisbe⁵, Esther Vicente-Rabaneda⁶, Arantza Alfranca¹, Miguel A. González-Gay⁷, Martí Aguilar Coll⁸, Rosario Garcia Vicuña⁶, Javier Narváez⁹ and Santos Castañeda¹⁰, ¹Hospital La Princesa, Madrid, Spain, ²Hospital de la Princesa, Madrid, Spain, ³Department of Immunology. Hospital Universitario de Bellvitge, Barcelona, Spain, ⁴University Hospital La Princesa, Madrid, Madrid, Madrid, Spain, ⁵Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain, ⁶Hospital Universitario de La Princesa, Madrid, Spain, ⁷Department of Rheumatology and Joint and Bone Research Unit, Hospital Universitario Fundación Jiménez Díaz, and Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Madrid, Spain, and Medicine and Psychiatry Department, University of Cantabria, Santander, Spain, ⁸Hospital Bellvitge, Barcelona, Spain, ⁹Hospital Universitario de Bellvitge, Barcelona, Spain, ¹⁰Hospital Universitario de La Princesa, IIS-Princesa, Madrid, Madrid, Spain
Background/Purpose: Anti-Nucleolar Organizer Region 90 (anti-NOR90) antibodies target nucleolar proteins involved in ribosomal RNA transcription and processing, key steps in protein synthesis. These antibodies have…
Abstract Number: 2148 • ACR Convergence 2025
Initial MRI Findings as Predictors of Disease Phenotype in Juvenile Dermatomyositis: A Comparative Study of Myositis Specific Antibodies NXP2-Positive and Myositis Specific Antibody-Negative Patients in a Large Tertiary Hospital
Juan Torres Sanchez¹, Pritish Bawa², Andrea Ramirez¹, MaiLan Nguyen³, Amit Thakral⁴, Xiaofan Huang¹, J Herman Kan² and Marietta De Guzman¹, ¹Baylor College of Medicine, Houston, TX, ²Texas Childrens Hospital, Houston, TX, ³Baylor College of Medicine, Austin, TX, ⁴Texas Children’s Hospital, Houston, TX
Background/Purpose: Juvenile dermatomyositis (JDM) is the most common idiopathic inflammatory myopathy of childhood, characterized by proximal muscle weakness and distinctive cutaneous findings. Magnetic resonance imaging…
Abstract Number: 1706 • ACR Convergence 2025
Overcoming Barriers to ANA Testing in Pediatric Populations in Africa
Ekemini Ogbu¹, Angela Migowa², Rashmi Sahay¹, Dhriti Sharma¹, Patricia Vega-Fernandez¹, Michael Henrickson¹, Evans Omalla³, Ayodele Faleye⁴, Wafa Hamdi⁵ and Hermine Brunner¹, ¹Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ²Aga Khan University Medical College East Africa, Nairobi, Kenya, ³Pediatric Society of the African League Against Rheumatism, Nairobi, Kenya, ⁴Lagos state university teaching hospital Ikeja, Lagos, Lagos, Nigeria, ⁵Kassab Institute, Faculty of Medicine of Tunis UR¹⁷SP⁰⁴, Tunis El Manar Univeristy, MANOUBA, Tunisia
Background/Purpose: Timely diagnosis of children, adolescents and young adults with rheumatologic disorders remains a global challenge especially in lower resource countries and areas (LRCs). There…
Abstract Number: 1197 • ACR Convergence 2025
Genetic Profiling of Idiopathic Inflammatory Myopathies in Indian Patients Reveals Genotype-Phenotype Correlation
Bandana Jassal¹, Aishwarya Dhall¹, Mohammed Faruq², Danveer Bhadu¹, Uma Kumar¹ and Mehar Chand Sharma¹, ¹All India Institute of Medical Sciences, New Delhi, New Delhi, Delhi, India, ²Institute of Genomics and Integrative Biology, New Delhi, Delhi, India
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) are rare autoimmune muscle disorders with complex genetic underpinnings. Most genetic studies have focused on limited populations. This study explores…

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