As seen in Figure 4, when compared to healthy controls, only 7 DEGs, including 6 up-DEGs (TYMP, TYROBP, TGFBI, LILRA2, GNLY, and GZMB) and 1 down-DEG (CD14) were common to CHB, liver cirrhosis, and HCC. This evidence concerns the gene GZMB and cirrhosis of liver.