Additionally, Fu et al. (2021) demonstrated that miR-520d suppresses rapid pacing-induced apoptosis of atrial myocytes through the mediation of ADAM10, and Yu et al. (2019) reported that miR-23 suppresses fibroblast apoptosis in AF through targeting Tgf-β1 [106,107]. The gene discussed is TGFB1; the disease is atrial fibrillation.