Dermatomyositis outcomes w/ 2475 pts (claims) & 1196 pts (EHR). Half had myositis panels & 35% had + MSAbs. Steroid use common in 69% & 74%. HCQ, MTX, MMF. Outocmes (per 1000PYs) wereL all-cause hospitalisation 92, malignancy 15.3, ILD 6.4, and myocarditis 2.1 https://t.co/DJqKGNGX76