For example: Howe et al. suggested that miR-30b regulated endothelial cell capillary morphogenesis by regulating TGF-β2 expression [39]; Niu et al. found that miR-153 inhibited osteosarcoma cell proliferation and invasion by targeting TGF-β2 [40]; Li et al. reported that miR-30a reversed TGF-β2-induced migration in posterior capsular opacification by targeting SMAD2 [41]. This evidence concerns the gene SMAD2 and osteosarcoma.