The expression of YBX1, PSMD1, CAD, EZH2, and RNF2 and survival analysis in the TCGA dataset. (a) Expression of the five genes in the TCGA dataset comprising high risk score samples (n = 178) and low risk score samples (n = 179). Mann–Whitney U test was used to detect significant expression. * ** *, P < 0.0001; * ** , P < 0.001; * *, P < 0.01; * , P < 0.05. (b–f) Kaplan–Meier curves based on the five genes to determine the overall survival (OS) of HCC patients in the TCGA dataset.