CASP3 and cancer: Although our cancer cell line data demonstrated that miR-17-5p targets caspase 7 and miR-337-3p directly targets caspase 3 mRNA, there were no inverse correlations between miR-337-3p and caspase-3 or miR-17-5p and caspase 7 in the TCGA data (Supplementary Figure S1).