CCN2 and Myocardial fibrosis: These circRNAs promote myocardial fibrosis via the circRNA_000203−miR-26b-5p−Col1a2/CTGF axis (111), circRNA_010567−miR-141−TGF-β1 axis (112), and circHIPK3−miR-29b-3p−Col1a1−Col3a1 axis (Figure 3) (113), respectively, and these data elucidate the pathogenesis of DC.