IFIH1 and dermatomyositis: These infiltrations mirrored those found in adult DM; anti-NXP2, anti-TIF1-γ, and anti-Mi2 antibody-positive DM displayed similar CD68+ infiltration in both endomysial and perimysial areas, while anti-MDA5-positive DM showed less CD68+ cell infiltration (40) (Supplementary Figure S1).