Validation of key genes expression in HCC. The expression levels of the 10 genes were collected in the Oncomine database. The results showed several missing values in microarray data. Based on the median rank and P-value, PTTG1 (Median Rank, 23.5; P-value, 5.78E-12), CCNB1 (Median Rank, 170.0; P-value, 2.66E-8), CDK1 (Median Rank, 61.0; P-value, 2.87E-10), AURKA (Median Rank, 55.5; P-value, 1.10E-11), UBE2C (Median Rank, 61.5; P-value, 1.78E-11), and ZWINT (Median Rank, 30.5; P-value, 1.87E-23) were chosen for further research (P < 0.001). HCC, hepatocellular carcinoma.