Abstract Number: 1471 • ACR Convergence 2025
Prevalence and Clinical Outcomes of Hemophagocytic Lymphohistiocytosis in Systemic Lupus Erythematosus: A Multi-Institutional Cohort Study
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: 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
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: 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
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: 2636 • ACR Convergence 2025
Autoantibodies to 14-3-3 eta: A Novel Diagnostic Biomarker for Axial Spondyloarthritis
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: 0008 • ACR Convergence 2025
Characterization of S-1117, a novel pan-IgG protease engineered for reduced immunogenicity using the IMPACT platform
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: 0296 • ACR Convergence 2025
Aggregation of HARS1 and internalized antibodies in muscle biopsies of patients with antisynthetase syndrome and anti-Jo1(HARS) autoantibodies
Background/Purpose: Autoimmune inflammatory myopathies (IMs) comprise a diverse group of diseases that primarily affect the muscles and often involve the lungs, skin, and joints. Among…Abstract Number: 0861 • ACR Convergence 2025
Identification of Anti-HDGFL1 as a Novel Autoantibody in Seronegative Idiopathic Inflammatory Myopathies
Background/Purpose: Myositis-specific autoantibodies (MSAs) play a crucial role in diagnosing and classifying idiopathic inflammatory myopathies (IIMs). However, approximately 30% of seronegative IIM patients may be…Abstract Number: 0953 • ACR Convergence 2025
NMDAR Autoantibody-Induced Neuronal Damage in the Amygdala Mediates Mood and Anxiety Disorders in a Model of Neuropsychiatric Lupus
Background/Purpose: Systemic Lupus Erythematosus (SLE) is a multisystem autoimmune disease characterized by aberrant production of autoantibodies and chronic inflammation. Up to 80% of individuals with…Abstract Number: 1488 • ACR Convergence 2025
Limited Concordance Between anti-dsDNA Assays and Association with Lupus Nephritis
Background/Purpose: Anti-dsDNA antibodies are a key diagnostic marker of systemic lupus erythematosus (SLE), often associated with active disease. Its presence is detected using various commercial…Abstract Number: 2027 • ACR Convergence 2025
Development of a multi-disease panel for autoimmune diseases
Background/Purpose: Autoantibodies serve as important biomarkers for diagnosing autoimmune diseases. However, current clinical assays for their detection often face challenges, such as uncertainty about the…Abstract Number: 2414 • ACR Convergence 2025
Autoantibody Clusters and SIGLEC1 are Predictive of Systemic Lupus Erythematosus Development
Background/Purpose: Up to a third of those with suspected SLE progress to definite SLE; however, reliable predictive markers for disease progression remain unknown. Previously, we…Abstract Number: 2652 • ACR Convergence 2025
Anti-mitochondrial antibodies in systemic sclerosis target enteric neurons and are associated with GI dysmotility
Background/Purpose: Most patients with systemic sclerosis (SSc) experience gastrointestinal (GI) dysmotility. The enteric nervous system (ENS) regulates GI motility, and its dysfunction causes dysmotility. A…Abstract Number: 0011 • ACR Convergence 2025
KT502, a novel CD19-directed TCE (T-cell engager), leads to rapid and deep B-cell depletion with low cytokine release
Background/Purpose: Chimeric antigen receptor T-cell (CAR-T) therapies targeting CD19 have shown unprecedented effects in treatment-resistant autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis…Abstract Number: 0299 • ACR Convergence 2025
Interpreting Myositis Autoantibody Line-Blot Immunoassays in Real-World Settings: Implications for Diagnostic Accuracy for Inflammatory Myopathies
Background/Purpose: Idiopathic inflammatory myopathies (IIM) present with diverse clinical features and disease courses. The myositis autoantibody line blot immunoassay (LIA) has advanced IIM diagnostics and…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
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…
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