#ACR23 Abstr#2578 AI to phenotype sporadic IBM vs AI Myositis -Anti-NT5c1A assoc with dysphagia -Anti-Ro52/TRIM21: female -Anti-VCP: male -Anti-NT5c1A + clinical markers: high accuracy in separating SIBM vs AIM Need longitudinal data for clusters to be meaningful @RheumNow https://t.co/fu0a074XAZ