USP28 and hepatocellular carcinoma: As listed in Supplementary Table 1, 21 USPs were significantly correlated with poor overall survival of the HCC patients, including USP1, USP10, USP11, USP13, USP14, USP15, USP19, USP21, USP22, USP24, USP28, USP29, USP32, USP33, USP36, USP37, USP39, USP42, USP46, USP48, and USP54.