Then, eight prognostic signatures related to FGFBP2+ NK cell in HCC were identified, including six “risk” genes (UBE2F, AHSA1, PTP4A2, CDKN2D, FTL, RGS2) and two “protective” genes (KLF2, GZMH) (Fig. 5C). This evidence concerns the gene KLF2 and hepatocellular carcinoma.