TRIM33 and dermatomyositis: The patient was diagnosed with dermatomyositis based on decreased proximal muscle strength (3/5) in the bilateral lower extremities, Holster sign rash, Gottron papules, elevated creatine kinase (CK) (564 U/L), elevated aldolase (11.8 U/L), elevated inflammatory markers, high antinuclear antibody titer (>1:1280), and positive transcriptional intermediary factor 1-gamma (TIF1-γ).