Moreover, the marker genes of the three immune cell types, including BIRC5, CDC7, CENPF, CDC25C, WDHD1, RORA, ZBTB16, CTSW, KLRK1, CD68, and GM2A, were observed to be dysregulated in HCC (Figure 4(b)). This evidence concerns the gene KLRK1 and hepatocellular carcinoma.