Non-parametric spearmen correlation revealed a positive correlation between USP28 and MAST1 expression in lung cancer (Spearman’s rho = 0.81); breast cancer (Spearman’s rho = 0.61) and colon cancer (Spearman’s rho = 0.76) (Supplementary Fig. 7 A–C). This evidence concerns the gene USP28 and breast cancer.