Abstracts tagged "Autoantibody(ies)"

Abstract Number: 0008 • ACR Convergence 2025
Characterization of S-1117, a novel pan-IgG protease engineered for reduced immunogenicity using the IMPACT platform
Julia Manasson¹, Liliana Sanmarco², Alex Pellerin², Maria Cecilia Ramello², Agustin Plasencia², Jordan Anderson², Tobias Green², Andita Newton², Ryan Peckner², Yi Xing², Heather Vital³, Nathan Higginson-Scott², John Sundy⁴, Kevin L. Otipoby² and Ivan Mascanfroni², ¹Seismic Therapeutic, New York, NY, ²Seismic Therapeutic, Watertown, MA, ³Seismic Therapeutic, Lexington, MA, ⁴Seismic Therapeutic, Durham, NC
Background/Purpose: Pathogenic autoantibodies are key effectors of inflammation, promoting tissue damage in autoantibody-mediated diseases such as inflammatory myopathies, lupus nephritis, Sjogren’s syndrome, antiphospholipid syndrome, and…
Abstract Number: 2636 • ACR Convergence 2025
Autoantibodies to 14-3-3 eta: A Novel Diagnostic Biomarker for Axial Spondyloarthritis
Raj Sengupta¹, Anthony Marotta², Walter P. Maksymowych³, Charlotte Cavill⁴, Stephen Bleakley² and Norma Biln⁵, ¹Royal National Hospital for Rheumatic Diseases, Bath, England, United Kingdom, ²Augurex Life Sciences Corp, Vancouver, BC, Canada, ³Department of Medicine, University of Alberta, ⁵⁶⁸ Heritage Building, Edmonton, AB, Canada, ⁴Royal United Hospitals Bath NHS Foundation Trust, Bath, England, United Kingdom, ⁵Augurex Life Sciences, Vancouver, BC, Canada
Background/Purpose: People with axial spondyloarthritis (axSpA), typically present with persistent back pain and experience up to a 10-year diagnostic delay that may lead to irreversible…
Abstract Number: 2398 • ACR Convergence 2025
Analytical performance of the HEp-2 substrate Diagnostic Kit for ANA as an initial step in the evaluation of a novel Fully Automated IFA Analyzer in a laboratory in England
Jason Sillitoe¹, Ewa Fiorentino-Rozek², Gerber Gomez³, Christian Fischer³ and Caroline Wilson¹, ¹North East Innovation Lab, The Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, England, United Kingdom, ²Clinical Affairs, AliveDx Suisse SA, Eysins, Vaud, Switzerland, ³Scientific & Medical Affairs, AliveDx Suisse SA, Eysins, Switzerland
Background/Purpose: Indirect immunofluorescence assay (IFA) on HEp-2 cells (HEp-2 IFA) remains a key tool in the diagnostic work-up of autoimmune connective tissue diseases (CTD). Traditionally…
Abstract Number: 2023 • ACR Convergence 2025
Isolated Anti-Ro52 Antibody Positivity Is Associated with Increased Cancer Risk and Distinct Malignancy Patterns: A Retrospective Cohort Study from a Single Tertiary Center
Carmen Secada-Gómez¹, Ligia Gabrie-Rodriguez², Hector Ulloa-Alvarado³, Giuliano Boselli⁴, Camilo Veloza-Morales⁵, Diana Prieto-Peña⁶, juan Irure-Ventura⁷, Marcos López-Hoyos⁸ and Ricardo Blanco¹, ¹Rheumatology Division, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain, Santander, Cantabria, Spain, ²Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain, ³Servicio Cántabro de Salud, Atención Primaria, Santander, Spain, Santander, Cantabria, Spain, ⁴Rheumatology Division, Hospital Universitario Miguel Servet , Zaragoza, Spain, Zaragoza, Aragon, Spain, ⁵Rheumatology Division, Hospital Universitario Joan XXIII, Tarragona, Spain, Tarragona, Catalonia, Spain, ⁶Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander, Spain., Santander, Spain, ⁷Division of Immunology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Cantabria, Spain, ⁸Division of Immunology, Hospital Universitario Marqués de Valdecilla, IDIVAL, Immunopathology Group, Santander , Spain, Santander, Spain
Background/Purpose: Anti-Ro52 antibodies are frequently detected in patients with systemic autoimmune rheumatic diseases (SARDs). Emerging evidence suggests a potential link between isolated anti-Ro52 positivity and…
Abstract Number: 1331 • ACR Convergence 2025
Anti-beta-2-glycoprotein-1 IgA antibodies facilitate macrophage cholesterol loading and influence coronary atherosclerosis progression in a dose-dependent manner in rheumatoid arthritis
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: Changes in serum cholesterol loading capacity (CLC) on macrophages were linked to coronary plaque progression in rheumatoid arthritis (RA). Inflammation, LDL oxidation and autoantibodies…
Abstract Number: 0942 • ACR Convergence 2025
Sodium-Glucose Co-Transporter 2 Inhibitors Modulate Renal Injury and Autoreactive Plasma Cells in Lupus
Jennifer Nicholson¹, Maria Ossa-Echeverri¹, Arpitha Haranahalli Shivarudrappa¹, Mark Lusco¹, Maria de la Luz Garcia-Hernandez², John Looney¹, Jennifer Anolik³ and Javier Rangel-Moreno¹, ¹University of Rochester, Rochester, NY, ²University of Rochester, West Henrietta, NY, ³University of Rochester Medical Center, Rochester, NY
Background/Purpose: Though immune targeted therapies have improved outcomes in lupus nephritis, a significant number of patients experience renal damage and even progression to end stage…
Abstract Number: 0860 • ACR Convergence 2025
Activated protein C resistance and protein C antibodies in the antiphospholipid syndrome alliance for clinical trials and international networking (APS ACTION) clinical database and repository
Maria Efthymiou¹, Ibrahim Tohidi-Esfahani², Veronica Venturelli¹, Maria Tektonidou³, Vittorio Pengo⁴, Diana Parades-Ruiz⁵, Ware Branch⁶, Maria Gerosa⁷, Cecilia Nalli⁸, Esther Rodriguez Almaraz⁹, Michelle Petri¹⁰, Ricard Cervera¹¹, Olga Amengual¹², Danieli Andrade¹³, Rohan Willis¹⁴, Maria Laura Bertolaccini¹⁵, Doruk Erkan¹⁶ and Hannah Cohen¹⁷, ¹University College London, London, United Kingdom, ²University of Sydney, Syndey, Australia, Sydney, Australia, ³National and Kapodistrian University of Athens, Athens, Greece, ⁴Padova University Hospital, Padova, Italy, ⁵Biobizkaia Health Research Institute, Barakaldo, Spain, Barakaldo, Spain, ⁶University of Utah Health Sciences Center, Salt Lake City, UT, ⁷University of Milan, Milano, Italy, ⁸ASST SPEDALI CIVILI DI BRESCIA, Brescia, Italy, ⁹Hospital Universitario ¹² de Octubre, Madrid, Spain, Madrid, Spain, ¹⁰Johns Hopkins University School of Medicine, Timonium, MD, ¹¹Hospital Clinic Barcelona, Barcelona, Spain, ¹²Hokkaido University Graduate School of Medicine, Sapporo, Japan, Sapporo, Japan, ¹³University of Sao Paulo, São Paulo, São Paulo, Brazil, ¹⁴University of Texas Medical Branch, Galveston, TX, ¹⁵King's College London, London, United Kingdom, ¹⁶Hospital for Special Surgery, New York, NY, ¹⁷University College London Hospitals NHS Foundation Trust, London, United Kingdom
Background/Purpose: Dysregulation in the protein C anticoagulant pathway, more specifically acquired resistance to activated protein C (APCr) and antibodies against protein C (anti-PC), has been…
Abstract Number: 0281 • ACR Convergence 2025
Anti-IL-6 Autoantibodies and IL-6 Signalling in Idiopathic Inflammatory Myopathies
Anja Srpcic¹, Manca Ogric¹, Sasa Cucnik¹, Sergej Pirkmajer², Katja Lakota¹ and Katja Perdan Pirkmajer¹, ¹University Medical Centre Ljubljana, Ljubljana, Slovenia, ²Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of systemic autoinflammatory diseases that affect muscle tissue, often leading to muscle atrophy, weakness and myalgia.…
Abstract Number: 2630 • ACR Convergence 2025
The Absence of DORIS Remission Is Associated with Greater Risk of Preterm Birth and Preeclampsia in SLE Pregnancies
Camila Hernández-Blanco¹, Philip Carlucci², Peter Izmirly³, Jessica Dai⁴, Mala Masson⁵, Michael Belmont¹, Amit Saxena⁶, Jane Salmon⁷, Justin Brandt¹ and Jill Buyon⁸, ¹NYU Langone Health, New York, NY, ²New York University School of Medicine, New York, NY, ³New York University Grossman School of Medicine, New York, NY, ⁴New York University Grossman School of Medicine, Tenafly, NJ, ⁵NYU Langone Medical Center- Division of Rheumatology, New York, NY, ⁶Division of Rheumatology, Department of Medicine, NYU Grossman School of Medicine, New York, NY, ⁷Hospital for Special Surgery, New York, NY, ⁸NYU Grossman School of Medicine, New York, NY
Background/Purpose: Systemic Lupus Erythematosus (SLE) primarily affects females of childbearing age and increases the risk of adverse pregnancy outcomes (APOs), particularly in non-White individuals and…
Abstract Number: 2397 • ACR Convergence 2025
Analytical Performance of a Fully Automated Multiplexed Microarray Immunoassay for the Simultaneous Detection of Fifteen Autoantibodies Associated with Connective Tissue Diseases in a Reference Laboratory in Southern France
Guillaume Nardella¹, Gerber Gomez², Christian Fischer² and Claire Monat¹, ¹Inovie Labosud Provence, Specialized Autoimmunity Analyses, Marseille, France, ²Scientific & Medical Affairs, AliveDx Suisse SA, Eysins, Switzerland
Background/Purpose: Autoantibodies are key diagnostic markers in autoimmune connective tissue diseases (CTD). Conventional testing often requires multiple single-measurand assays, which can be labor-intensive and time-consuming.…
Abstract Number: 1931 • ACR Convergence 2025
COSMOS Prevalence of aTTP in SLE
Nisha Sapkota¹, Yevheniia Andriushchenko², Saadia Malik², Sarang Choi² and Sima Terebelo², ¹Interfaith Medical Center, One Broolyn Health, Brooklyn, NY, ²Brookdale Hospital Medical Center, One Brooklyn Health, Brooklyn
Background/Purpose: Systemic lupus erythematosus (SLE) is a complex autoimmune disease with diverse manifestations, including thrombotic thrombocytopenic purpura (TTP), a life-threatening hematologic disorder. The pathogenesis of…
Abstract Number: 1471 • ACR Convergence 2025
Prevalence and Clinical Outcomes of Hemophagocytic Lymphohistiocytosis in Systemic Lupus Erythematosus: A Multi-Institutional Cohort Study
Amir Daneshvar¹, Julia Wajsberg¹, Chelsea Guan¹, Keri Ann Pfeil¹, Elleson Harper¹, Lindsay Frumker², Meghan Gump¹ and Omer Pamuk³, ¹University Hospitals Cleveland Medical Center/Case Western Reserve University, Cleveland, OH, ²University hospitals Cleveland medical center, Highland Heights, OH, ³University Hospitals Cleveland Medical Center/ Case Western Reserve University, Cleveland, OH
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with multisystem involvement. A rare but life-threatening hyper-inflammatory hematological complication of SLE is hemophagocytic lymphohistiocytosis…
Abstract Number: 0910 • ACR Convergence 2025
Development of Four Distinct Human IgG4-Producing Mouse Models Recapitulating IgG4-Related Disease
MIN GANG KIM¹, JINA YEO², HEA RIM KANG³, JAE HYUN MOON³, Seon Uk Kim⁴, SeoYoon Ban⁵, MI HYEON KIM⁶ and Eun Young Lee⁷, ¹Seoul National University College of Medicine, Seoul, Republic of Korea, ²Division of Rheumatology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea, ³Seoul National University College of Medicine, Jongno-gu, Seoul, Republic of Korea, ⁴Seoul National University, Jongno-gu, Seoul, Republic of Korea, ⁵Department of Cancer biology, Graduate School of College of Medicine, Seoul National University, Korea, Seoul, Republic of Korea, ⁶Hallym university dongtan sacred heart hospital, Seocho-gu, Seoul, Republic of Korea, ⁷Seoul National University College of Medicine, Seoul, South Korea
Background/Purpose: IgG4-related disease (IgG4RD) is an immune-mediated fibroinflammatory condition characterized by multi-organ involvement, elevated serum IgG4, and IgG4-positive plasma cell infiltrates that form tumor-like lesions…
Abstract Number: 0859 • ACR Convergence 2025
Trophoblast Dysfunction and Placental Alterations in a Mouse Model of Antiphospholipid Syndrome: The Potential Role of Neutrophil Extracellular Traps
Bruna Mazetto Fonseca¹, Srilakshmi Yalavarthi², Katarina Kmetova², NaveenKumar Somanathapura³, Cyrus Sarosh⁴, Kavya Sugur⁵, Wenying Liang⁶, Yu (Ray) Zuo³, Richard W. Lieberman⁶ and Jason S. Knight³, ¹Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, ²Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, ³University of Michigan, Ann arbor, MI, ⁴University of Michigan, Temperance, MI, ⁵Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Ann Arbor, MI, ⁶University of Michigan, Ann arbor
Background/Purpose: Neutrophil extracellular traps (NETs) are webs of chromatin and proteases (e.g., neutrophil elastase) that have been implicated in antiphospholipid syndrome (APS)-associated thrombosis; however, their…
Abstract Number: 0278 • ACR Convergence 2025
Classic and Clinically Amyopathic Dermatomyositis: Autoantibody Positivity
Xiwei Yang¹, Shae Chambers², Aretha On¹, Hammad Ali², Touraj Khosravi³, Lais Lopes Almeida Gomes², Rui Feng⁴ and Victoria Werth⁵, ¹Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, ²University of Pennsylvania, Philadelphia, PA, ³Department of Dermatology, Perelman Shool of Medicine, University of Pennsylvania, Philadelphia, PA, ⁴Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania, Philadelphia, PA, ⁵University of Pennsylvania, Wynnewood, PA
Background/Purpose: Dermatomyositis (DM) is an idiopathic inflammatory myopathy subclassified as classic (CDM) and clinically amyopathic (CADM). It can involve myositis-associated (MAA) and myositis-specific (MSA) autoantibodies.…

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