The results of KEGG pathways enrichment analysis about the target genes associated with HCC were mainly enriched in the microRNAs in cancer, oncogene induction senescence, pancreatic adenocarcinoma pathway, Fas ligand pathway, stress induction of heat shock proteins regulation, and hepatitis C and HCC pathway (Figure 10 and Supplementary Figures S1 and S2). The gene discussed is FASLG; the disease is hepatitis C virus infection.