APOBEC3F, a member of the cytidine deaminase gene family, is thought to play a role in the cell cycle or growth control, and overexpression of APOBEC3F is also related to poor recurrence-free survival of HBV-related hepatocellular carcinoma (Yang et al., 2015). The gene discussed is APOBEC3F; the disease is hepatocellular carcinoma.