For instance, exendin-4 has been shown to ameliorate the high glucose-induced fibronectin (FN) and type I collagen (Col1) expression in tubular epithelial cells by inhibiting the secretion of miR-192, an microRNA (miRNA) that is regulated by p53 and plays a role in renal fibrosis (Jia et al., 2018). The gene discussed is FN1; the disease is renal fibrosis.