MORC3 and dermatomyositis: DM is linked to several autoantibodies, primarily including anti-mitochondrial M2-associated protein (Mi-2), anti-melanoma differentiation-associated protein 5 (MDA5), anti-transcription intermediary factor 1-γ (TIF1-γ), anti-nuclear matrix protein 2 (NXP2), and anti-small ubiquitin-like modifier activating enzyme 1 (SAE1) autoantibodies (5).