TGFB1 and viral myocarditis: As a result, the significantly changed miRNAs in DCM can be grouped into 17 functional categories, among which we can highlight enriched pathways related to inflammation (TLR signaling, TGFβ pathway, GPCRs, MAPKs, PPARs, etc.), as well as several cardiac-related clusters such as viral myocarditis, cardiac muscle contraction, heart development, and hypertrophic and dilated cardiomyopathy, among others.