ATG7 and pituitary tumor: The DAs resistance induced by the overexpression of miR-93-5p in MMQ and GH3 cell lines involves the down-regulation of the protein p21, a key member of cyclin kinase inhibitors known to be implicated in the inhibition of cell-cycle progression, as demonstrated in MMQ cell line (97), and the down-regulation of the protein Autophagy Related 7 (ATG7), an essential regulator of autophagy, decreasing the autophagic cell death induced by CAB in MMQ and GH3 cell lines and rat pituitary tumors (99).