IFIH1 and interstitial lung disease: In the present study, hsa-miR-1228-5p was upregulated in the DM-ILD-MDA5 Ab(+) group (fold change = 2.1956, P = 0.0034) and downregulated in the DM-nonILD-MSA16(-) group (fold change = −3.4834, P = 0.0034) when compared with the HC group, while hsa-miR-4488 was upregulated in the DM-ILD-MDA5 Ab(+) group as compared with the DM-nonILD-MSA16(-) group (fold change = 17.7211, P = 7.79 × 10−7) and the HC group (fold change = 2.4375, P = 0.0099).