Abstract Number: 2674 • ACR Convergence 2025
Pulmonary ultrasound findings and their relationship with clinical characteristics and myopathy antibodies in a cohort of patients with myositis
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are a group of diseases characterized by muscular and systemic involvement, with interstitial lung disease (ILD) being a challenging problem.…Abstract Number: 1889 • ACR Convergence 2025
Navigating Diagnostic Challenges: Insights into the Patient Journey and Delays in Diagnosing Dermatomyositis from a Real-world Survey in the United States and Europe
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) are a heterogenous group of rare autoimmune inflammatory rheumatic diseases, including dermatomyositis (DM).Methods: Data were drawn from the Adelphi Real…Abstract Number: 0293 • ACR Convergence 2025
Presence of Anti-cN-1A (Mup44, NT5c1A) IgG is Specific for Sporadic Inclusion Body Myositis
Background/Purpose: Sporadic inclusion body myositis (sIBM) is an autoimmune disease manifesting with muscle degeneration, inflammatory infiltrates and inclusion vacuoles. Diagnosis of sIBM is hampered by…Abstract Number: 2671 • ACR Convergence 2025
Effect of Efgartigimod PH20 SC on Total Improvement Score, its Core Set Measures, and Patient/Clinician Impressions of Change: Results from the Phase 2 ALKIVIA Study of Adults with Active Idiopathic Inflammatory Myopathy
Background/Purpose: Idiopathic inflammatory myopathy (IIM) is a rare, systemic, autoimmune, rheumatic disease, with different subtypes, characterized by muscle weakness and extra-muscular involvement. There are no…Abstract Number: 1772 • ACR Convergence 2025
Correlation between Soluble Checkpoint Molecules and Disease Activity in Autoimmune Diseases
Background/Purpose: Soluble checkpoint molecules (sCM) may be involved in the pathophysiology of autoimmune diseases by inhibiting the suppressive signals of immune cell activation through binding…Abstract Number: 0292 • ACR Convergence 2025
Patterns and Predictors of Longitudinal Trajectories of Pain in Individuals with Inflammatory Myopathies
Background/Purpose: Idiopathic inflammatory myopathies (IIM) have historically been considered a disease of painless weakness. However, recent studies indicate that most patients with IIM experience pain…Abstract Number: 2077 • ACR Convergence 2025
Statin-Associated Immune-Mediated Necrotizing Myopathy in Native Americans
Background/Purpose: Immune-mediated necrotizing myopathy (IMNM) is an aggressive subtype of idiopathic inflammatory myopathy (IIM) associated anti-3-hydroxy-3-methylglutaryl coenzyme A reductase (anti-HMGCR) antibodies. Recently there have been…Abstract Number: 1218 • ACR Convergence 2025
Social Determinants Shape Health Outcomes in Idiopathic Inflammatory Myopathies: Insights from Lived Experience of 1,252 Patients
Background/Purpose: The impact of social determinants of health (SDoH)—including socioeconomic status, social support, and geographic context—on disease outcomes in idiopathic inflammatory myopathies (IIM) remains underexplored.…Abstract Number: 0287 • ACR Convergence 2025
Comprehensive Profiling of Neutrophil Subsets Reveals Functional Signatures Linked to Vasculopathic Features in Patients with Inflammatory Myopathies
Background/Purpose: Vasculopathic manifestations of idiopathic inflammatory myopathies (IIM) such as interstitial lung disease (ILD), calcinosis, skin ulcers, mechanic’s hands, are characterized by immune-mediated vascular damage.…Abstract Number: 2073 • ACR Convergence 2025
Cell-free DNA as a Potential Marker of Muscle Involvement and Treatment Response in Myositis
Background/Purpose: Idiopathic inflammatory myopathies (IIM) are characterized by inflammatory muscle injury. Circulating cell-free DNA (cfDNA), including nuclear (cfnDNA) and mitochondrial (cfmtDNA) DNA, has been shown…Abstract Number: 1210 • ACR Convergence 2025
Artificial Intelligence-Based Capillaroscopy and Laboratory Biomarkers to Predict Disease Activity in Idiopathic Inflammatory Myopathies: Preliminary Data from the CapIAMI Cohort
Background/Purpose: Nailfold videocapillaroscopy (NVC) is a valuable non-invasive tool for assessing microvascular damage in autoimmune diseases. However, its application in idiopathic inflammatory myopathies (IIM) remains…Abstract Number: 0285 • ACR Convergence 2025
Delayed-Onset Myopathy in Dermatomyositis: A Retrospective Cohort Study
Background/Purpose: Amyopathic dermatomyositis (ADM) is a subset of DM in which cutaneous findings occur without muscle disease for >6 months after diagnosis. However, there is…Abstract Number: 2072 • ACR Convergence 2025
Results of an Integrated Program for Early Cancer Detection in Idiopathic Inflammatory Myopathies
Background/Purpose: Cancer risk is significantly increased in Idiopathic Inflammatory Myopathies (IIM), particularly within the first 3 to 5 years after diagnosis. Given that cancer represents…Abstract Number: 1211 • ACR Convergence 2025
Plasma Levels of miR-133a-3p and miR-1-3p as Potential Biomarkers of Muscle Involvement and Initial Treatment Response in Myositis
Background/Purpose: Idiopathic inflammatory myopathies (IIM) involve muscle inflammation. MicroRNAs (miRNAs), such as miR-133a-3p and miR-1-3p, play a key role in gene regulation and muscle repair.…Abstract Number: 0282 • ACR Convergence 2025
Clinical Meaningfulness and Improvement Thresholds of Myositis Core Set Measures: Association with Patient-Reported Outcomes
Background/Purpose: The six myositis core set measures (CSMs) are widely utilized to assess disease activity in idiopathic inflammatory myopathies (IIM). However, their association with how…
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