Comparative studies of KIAA0101 and coexpressed gene levels in HBV-infected or HCV-infected HCC patients of the same ethnicity and sex using the identical RNA-seq platform and analysis pipeline will help to elucidate the mechanism that links hepatitis virus infection status, KIAA0101 expression level, and HCC oncogenesis. The gene discussed is PCLAF; the disease is hepatocellular carcinoma.