Abstracts tagged "Autoantibody(ies)"

Abstract Number: 0137 • ACR Convergence 2025
Landscape of Primary Antiphospholipid Syndrome: Clinical Spectrum, Serology, and Predictors of Damage in a Single Center Cohort of 233 Patients
RITESH KUMAR MISHRA¹, SUBIN PHILIP², JAIDEV MENON², RIZWANA NAUSHAD², AISHWARYA GOPAL³, CHRISTINA MARIASELVAM², Chengappa Kavadichanda², Molly mary Thabah³ and VIR SINGH NEGI², ¹JAWAHARLAL INSTITUTE OF POSTGRADUATE MEDICAL EDUCATION AND RESEARCH, Bhubaneswar, India, ²JAWAHARLAL INSTITUTE OF POSTGRADUATE MEDICAL EDUCATION AND RESEARCH, PUDUCHERRY, Puducherry, India, ³JAWAHARLAL INSTITUTE OF POSTGRADUATE MEDICAL EDUCATION AND RESEARCH, PUDUCHERRY, India
Background/Purpose: Primary Antiphospholipid Syndrome (APS) a systemic autoimmune prothrombotic disorder with long-term consequences. While secondary APS is well studied, large real-world cohorts of primary APS…
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…
Abstract Number: 0654 • ACR Convergence 2025
Obinutuzumab Shows Promise in Lupus Nephritis Regardless of Baseline Serological Markers: An Exploratory Post Hoc Analysis of a Phase II Trial
Ed Vital¹, Benni Vargas², Julie Rae², Tracey Wang³, Jason Hackney², Cary Looney⁴, William Pendergraft², Liz Lightstone⁵, Brad Rovin⁶, Richard Furie⁷ and Harini Raghu², ¹University of Leeds, Leeds, England, United Kingdom, ²Genentech, Inc., South San Francisco, CA, ³Hoffmann-La Roche Ltd, Missssauga, ON, Canada, ⁴F. Hoffmann-La Roche Ltd, Basel, Switzerland, ⁵Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, London, England, United Kingdom, ⁶The Ohio State University, Columbus, OH, ⁷Division of Rheumatology, Northwell Health, Great Neck, NY
Background/Purpose: Lupus nephritis (LN) is characterized by kidney inflammation. B cells play a central role in LN pathogenesis and type I interferon (IFN-I) pathway activation…
Abstract Number: 0509 • ACR Convergence 2025
Functional Anti-M3R Autoantibodies in Sjögren’s Disease: From Gland to Circulation
Martha Tsaliki¹, Joshua Cavett², Biji T Kurien³, valerie Lewis³, John Ice⁴, Devavrat Dave⁵, Sina Khosravani⁵, Menerva Racy⁵, Rebecca Wood⁶, Seunghee Cha⁷, A. Darise Farris³, Kristi A. Koelsch⁵ and R. Scofield³, ¹The University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Oklahoma Medicar Research Foundtion, Oklahoma City, ³Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴OKC Veterans Affairs Medical Center, Oklahoma City, OK, ⁵Oklahoma Medical Research Foundation, oklahoma City, ⁶University of Oklahoma Health Sciences Center, Edmond, OK, ⁷University of Florida, Gainesville
Background/Purpose: Sjögren’s disease (SjD) is a systemic autoimmune disease characterized by immune-mediated damage to salivary and lacrimal glands. While autoantibodies against muscarinic type 3 receptor…
Abstract Number: 0129 • ACR Convergence 2025
Analysis of Antiphosphatidylserine/prothrombin Antibodies as a Predictor of Lupus Anticoagulant in the Pediatric Population
Jonathan Marilao¹, Sean Yates² and Elizabeth Sloan³, ¹University of Texas Southwestern, Dallas, TX, ²University of Texas Southwestern, Dallas, ³UT Southwestern, Children's Medical Center, and Scottish Rite for Children, Dallas, TX
Background/Purpose: Antiphospholipid Syndrome (APS) is a systemic thromboinflammatory autoimmune disease characterized by thrombotic or obstetric events occurring in individuals with persistently positive antiphospholipid antibodies (aPL).…
Abstract Number: 2484 • ACR Convergence 2025
Phenotype of systemic sclerosis patients with positive anti–NOR-90 antibodies
Javier Narváez¹, Santos Castañeda², Montserrat Roig Kim³, Martí Aguilar-Coll⁴, Laia De Daniel Bisbe³, Marina Dueñas⁵, Cristina Valero⁶, Francisco Morandeira⁷, Miguel A. González-Gay⁸ and Joan Miquel Nolla³, ¹Hospital Universitario de Bellvitge, Barcelona, Spain, ²Hospital Universitario de La Princesa, IIS-Princesa, Madrid, Madrid, Spain, ³Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain, ⁴Department of Rheumatology. Hospital Universitario de Bellvitge, Barcelona, Spain, ⁵Department of Rheumatology.Hospital Universitario de la Princesa, Madrid, Spain, ⁶Hospital de la Princesa, Madrid, Spain, ⁷Department of Immunology. Hospital Universitario de Bellvitge, Barcelona, Spain, ⁸Department 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
Background/Purpose: To analyze the clinical associations of anti-Nucleolar Organizer Region 90 antibodies (NOR90) antibodies in patients with systemic sclerosis (SSc)Methods: Cross-sectional study of NOR90-positive SSc…
Abstract Number: 2103 • ACR Convergence 2025
PCRX-201 High-Capacity Adenovirus Serotype 5 Gene Therapy Demonstrates Sustained Clinical Efficacy and Safety in Patients With Knee Osteoarthritis
Stanley Cohen¹, Philip Conaghan², Marc C. Hochberg³, Alan Kivitz⁴, MiJeong Kim⁵, Nino Joy⁶, Shoshanna Jiang⁶, Mary DiGiorgi⁷, Jonathan Slonin⁶ and Derek Slonin⁶, ¹Metroplex Clinical Research Center, dallas, TX, ²University of Leeds, Leeds, United Kingdom, ³Marc C. Hochberg University of Maryland School of Medicine, Baltimore, MD, ⁴Altoona Center for Clinical Research, Duncansville, PA, ⁵Pacira BioSciences, Inc., Brisbane, ⁶Pacira BioSciences, Inc., Brisbane, CA, ⁷Pacira BioSciences, Inc, Brisbane, CA
Background/Purpose: Knee OA is a common disease affecting ~15 million people in the United States. There is an urgent unmet need for additional OA treatments…
Abstract Number: 1693 • ACR Convergence 2025
Characterizing ANCA-specific B Cells in ANCA-associated Vasculitis
Laura van Dam¹, Mengrui Zhang¹, Shima Parsafar², Audra Horomanski³, Sajede Rasouli², Orr Sharpe², Jolijn van Leeuwen⁴, Tobias Lanz², Cees van Kooten⁴, Onno Teng⁵ and William H. Robinson³, ¹Stanford University, Stanford, CA, ²Stanford University, Stanford, ³Stanford University, Palo Alto, CA, ⁴Leiden University Medical Center, Leiden, Netherlands, ⁵Leiden University Medical Center, Leiderdorp, Netherlands
Background/Purpose: Anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV) is a severe autoimmune disease, characterized by ANCAs targeting myeloperoxidase (MPO) or proteinase-3 (PR3). ANCA-specific B cells have…
Abstract Number: 1195 • ACR Convergence 2025
Discordance between Immunoblot and ELISA in the detection of Jo-1 and Ro/Ro-52 Autoantibodies
Antonia Valenzuela¹, Sebastián Andrés Cerda Acevedo² and Francisco Vera Gutiérrez², ¹Pontificia Universidad Catolica de Chile, Santiago, Chile, ²Pontificia Universidad Católica de Chile, Santiago de Chile, Chile
Background/Purpose: Autoantibodies play a key role in the diagnosis, classification, and prognosis of idiopathic inflammatory myopathies (IIM). Among the most relevant are myositis-specific antibodies (MSAs),…
Abstract Number: 0646 • ACR Convergence 2025
A-319, a CD3×CD19 T Cell Engager, for the Treatment of Refractory Systemic Lupus Erythematosus: Preliminary Evidence of Autoimmune Reset
Chunli Mei¹, Xin Guan¹, Rong Du¹, Bin Wu², You Song¹, Xiaoqi Chen³, Mengjiao Li¹, Xiaojing Liu¹, Xi Cheng¹, Weiwei Wang¹, Cheng Wang¹, Huiling Mei¹, Xiaoru Duan¹, Lijuan Jiang¹, Wenlin Qiu¹, Likai Yu¹, Yuhong Liu¹, Di Wu¹, Guiqi Quan¹, Blal Chakhabi¹, Xing Zhao⁴, Xuanfan Zhong⁴, Shengjie Xue⁴, Wuzhong Shen⁴, Ying Tan⁴, Guojian Yu⁴, Guiyun Tu⁴, Hanyang Chen⁴, Amy Sun⁴, Jing Liang⁴, Sharon Song⁴, Jason Xu⁴, Xiaoqiang Yan⁴, Anbing Huang¹ and Qiubai Li⁵, ¹Union Hospital,Tongji Medical College, Huazhong University of Science and Technology, WUHAN, China (People's Republic), ²First People’s Hospital of Jingzhou, Jingzhou, China (People's Republic), ³Zhongnan Hospital, Wuhan University, Wuhan, China (People's Republic), ⁴ITabMed Co., Ltd., Shanghai, China (People's Republic), ⁵Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (People's Republic)

Background/Purpose: Immune reset of autoimmune disease has been proposed to be a potential benefit of T cell engagers (TCEs) and CD19 CAR T therapy. A-319,…
Abstract Number: 0506 • ACR Convergence 2025
Discovery-based Identification of Non-canonical Autoantibody Specificities in Ro Seronegative Sjögren’s Disease Using High-content Human Proteome Arrays
Songyuan Yao¹, Christina Lawrence¹, Hope Christakos², Charmaine Lopez-Davis¹, Bhuwan Khatri¹, Tommi C. Taylor¹, Astrid Rasmussen¹, Kiely Grundahl², R Hal Scofield¹, Blake M. Warner³, Judith James¹, Joel Guthridge¹, Christopher J. Lessard¹ and A. Darise Farris¹, ¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²Oklahoma Medical Research Foundation, Oklahoma City, ³National Institutes of Health, Bethesda, MD
Background/Purpose: Clinical tests for Sjögren’s disease (SjD) often overlook Ro-seronegative (RoNeg) cases, leading to delayed or missed diagnoses. Identifying additional serum autoantibodies could improve diagnostic…
Abstract Number: 0121 • ACR Convergence 2025
The Prevalence and Clinical Significance of IgA Anticardiolipin and Anti-β2-Glycoprotein-I Antibody Isotypes in Antiphospholipid Antibody Positive Patients: Descriptive Results from the Antiphospholipid Syndrome Alliance for Clinical Trials and International Networking Registry
Emre Sahin¹, Yu (Ray) Zuo², Danieli Andrade³, Maria Tektonidou⁴, Vittorio Pengo⁵, Massimo Radin⁶, Chary López pedrera⁷, Diana Paredes-Ruiz⁸, H Michael Belmont⁹, Paul Fortin¹⁰, Denis WAHL¹¹, Ware Branch¹², Maria Gerosa¹³, Guilherme Ramires de Jesus¹⁴, Tatsuya Atsumi¹⁵, Maria Efthymiou¹⁶, Angela Tincani¹⁷, Esther Rodriguez-Almaraz¹⁸, Michelle Petri¹⁹, Ricard Cervera²⁰, Rohan Willis²¹, Katrien Devreese²², Maria Laura Bertolaccini²³, Hannah Cohen²⁴, Jason S. Knight² and Doruk Erkan¹, ¹Hospital for Special Surgery, New York, NY, ²University of Michigan, Ann Arbor, MI, ³University of Sao Paulo, São Paulo, São Paulo, Brazil, ⁴National and Kapodistrian University of Athens, Athens, Greece, ⁵Padova University Hospital, Padova, Italy, ⁶University of Turin, Turin, Turin, Italy, ⁷Rheumatology service/Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ Reina Sofia University Hospital/ University of Cordoba, Spain, Cordoba, Spain, ⁸Biobizkaia Health Research Institute, Barakaldo, Spain, ⁹NYU School of Medicine, New York, NY, ¹⁰Centre ARThrite - CHU de Québec - Université Laval, Quebec, QC, Canada, ¹¹University of Lorraine, Nancy, France, ¹²University of Utah Health Sciences Center, Salt Lake City, UT, ¹³University of Milan, Milano, Italy, ¹⁴Universidade do Estado do Rio de Janeiro, Rio De Janeiro, Rio de Janeiro, Brazil, ¹⁵Hokkaido University, Sapporo, Japan, ¹⁶University College London, London, United Kingdom, ¹⁷ASST Spedali Civili-University of Brescia, Gussago, Brescia, Italy, ¹⁸Hospital Universitario ¹² de Octubre, Madrid, Spain, ¹⁹Johns Hopkins University School of Medicine, Timonium, MD, ²⁰Hospital Clinic Barcelona, Barcelona, Spain, ²¹University of Texas Medical Branch, Galveston, TX, ²²Ghent University, Gent, Belgium, ²³King's College London, London, United Kingdom, ²⁴University College London Hospitals NHS Foundation Trust, London, United Kingdom
Background/Purpose: The 2023 ACR/EULAR Antiphospholipid Syndrome (APS) Classification Criteria (CC) focus on IgG and IgM anticardiolipin (aCL) and anti-β2-glycoprotein-I antibodies (aβ2GPI). IgA isotypes were excluded…

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