Kaplan–Meier analysis and the log rank test were used to compare the survival curves for the 22 genes, and the results verified that high expression of only four (ETV4, ETV5, MLLT1, and IKZF3) of the 22 genes was significantly associated with poor overall survival (OS) in HCC (Fig. 1D). Here, ETV4 is linked to hepatocellular carcinoma.