TGFB1 and proliferative diabetic retinopathy: Fuchs et al. (30) reported the ability of miRNA-93 to suppress TGFβ-induced VEGFA secretion from retinal pigment epithelium cell lines and to convert TGFβ-induced mesenchymal retinal epithelial cells back to the epithelial-like status, which part-explains our finding of a gradual decrease in miRNA-93 expression across patient groups, with the lowest expression level in patients with proliferative diabetic retinopathy.