The staining intensity of PAX2, CCND1, MYC, NEDD4, and CXCL5 in normal liver tissues and HCC tissues was further determined through the Human Protein Atlas website (https://www.proteinatlas.org/), which was found to show a notable elevation in HCC tissues compared to that in normal liver tissues (Figures 4(c)–4(g)). Here, CCND1 is linked to hepatocellular carcinoma.