Abstract Number: 0076 • ACR Convergence 2025
Antibodies to malondialdehyde-acetaldehyde are associated with circulating inflammatory mediators during the preclinical stages of rheumatoid arthritis
Background/Purpose: Circulating concentrations of anti-malondialdehyde-acetaldehyde (MAA) antibodies distinguish patients with RA and are detectable years prior to arthritis onset. Recent data demonstrate that anti-MAA antibodies…Abstract Number: 2432 • ACR Convergence 2025
Duffy Null Genotype and Autoantibodies Synergistically Contribute to Severe Leukopenia in Systemic Lupus Erythematosus
Background/Purpose: Systemic lupus erythematosus (SLE) is a common, complex inflammatory autoimmune disease in which dysregulation of both innate and adaptive immune responses has been implicated…Abstract Number: 2059 • ACR Convergence 2025
Autoantibody Patterns in Myositis Immunoblot Testing: A Retrospective Study inInflammatory Myopathies and Connective Tissue Diseases (2017–2023)
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a heterogeneous group of autoimmune diseases characterized by muscle inflammation and systemic involvement, often associated with specific autoantibodies. Immunoblot…Abstract Number: 1570 • ACR Convergence 2025
Hydroxychloroquine and Disease Progression in Systemic Sclerosis: Insights from Antibody-Stratified Survival Analyses
Background/Purpose: Hydroxychloroquine (HCQ) is an antimalarial drug that interferes with dendritic cells and monocytes, acidifies endosomes, and modulates toll-like receptors, reducing autoimmune responses and cell…Abstract Number: 1033 • ACR Convergence 2025
Rethinking ANA in Rheumatoid Arthritis: ICAP Pattern Insights from a Large-Scale Taiwanese Cohort
Background/Purpose: ANA prevalence and patterns vary in RA. Using ICAP nomenclature, this study aimed to determine the prevalence of RA across different ANA patterns and…Abstract Number: 0617 • ACR Convergence 2025
Autoantibodies to Extracellular Antigens in Lupus Patients Serum Versus Controls; Predominance of Autoantibodies to Type I Interferons in Lupus Sera
Background/Purpose: Key features in the pathophysiology of SLE include cytokine dysregulation and autoantibody production. Traditional autoantibody testing in SLE is primarily limited to intracellular antigens…Abstract Number: 0304 • ACR Convergence 2025
Concordance for myositis-specific autoantibody detection between commercial enzyme-linked immunosorbent assay and line blot assay: a multi-center study across the Asia-Pacific region
Background/Purpose: RNA/protein immunoprecipitation (IP) assays remain the “gold standard” for myositis-specific autoantibody (MSA) detection. However, the requirements for large-scale cell culture and radioisotopes limit its…Abstract Number: 0073 • ACR Convergence 2025
HLA-DQA1*01:02 Is Associated With IgG Multi-Reactivity With Citrulline-Containing Type II Collagen Epitopes While HLA-DRB*04:01 Is Associated With More Private Reactivity With Citrulline-Containing IgG Epitopes In Rheumatoid Arthritis
Background/Purpose: Anti-citrullinated protein antibodies (ACPAs) in rheumatoid arthritis (RA) can be promiscuous, with cross-reactive binding to many antigens containing short motifs, or more private with…Abstract Number: 2422 • ACR Convergence 2025
Cluster Analysis of Autoantibodies in Patients with Systemic Lupus Erythematosus
Background/Purpose: Systemic lupus erythematosus (SLE) is a heterogeneous autoimmune disorder characterized by multi-organ involvement and variable clinical manifestations. Recurrent clinical patterns suggest distinct phenotypes, where…Abstract Number: 2058 • ACR Convergence 2025
Organ-specific disease activity and serological patterns in idiopathic inflammatory myopathies: A descriptive study in a Hispanic cohort
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are rare diseases that involve chronic muscle inflammation, weakness, and pain. Autoantibodies in IIM play a central role in disease…Abstract Number: 1559 • ACR Convergence 2025
Anti-Cytolethal Distending Toxin Antibodies in Systemic Sclerosis: Associations with Gastrointestinal Disease and Immune Dysregulation
Background/Purpose: Anti- Cytolethal Distending Toxin (CDT) antibodies may serve as biomarkers for post-infectious autoimmunity and aid in clinical risk stratification. In this study, we aimed…Abstract Number: 0983 • ACR Convergence 2025
Detecting Autoreactive CD4+ T Cells Relevant to Mixed Connective Tissue Disease
Background/Purpose: Mixed connective tissue disease (MCTD) is a systemic autoimmune disorder marked by a U1-small nuclear ribonucleoprotein (U1-snRNP) autoantibody. The majority of U1-snRNP antibodies in…Abstract Number: 0603 • ACR Convergence 2025
Transverse Myelitis in Systemic Lupus Erythematosus: Disease Manifestations and Clinical Outcomes from Multi-Center Data
Background/Purpose: Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease with widespread clinical manifestations. Neuropsychiatric SLE (NPSLE), a complex and poorly understood subset of SLE,…Abstract Number: 0300 • ACR Convergence 2025
Exploring Malignancy in Anti-synthetase Syndrome: A Multisite Retrospective Study
Background/Purpose: Anti-synthetase syndrome (ASyS) is a rare, heterogeneous inflammatory myopathy characterized by presence of anti-aminoacyl transfer RNA synthetase autoantibodies with multisystem disease manifestations including myositis,…Abstract Number: 0012 • ACR Convergence 2025
KT501, a CD19/BCMA/CD3 trispecific antibody, leads to rapid and deep B-cell depletion with well-tolerated safety
Background/Purpose: Chimeric antigen receptor T-cell (CAR-T) therapies targeting CD19 or B-cell maturation antigen (BCMA) have shown unprecedented effects in treatment-resistant autoimmune diseases such as systemic…
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