NAT2 and hepatocellular carcinoma: Hernandez-Vargas et al. revealed that panel of hypermethylated genes, for example, DCC, CSPG2, and NAT2, was specific to HBV-related HCC [26, 27] and methylation of constitutive androstane receptor (CAR) suppresses CYP2C19 in HBV-associated HCC patients [28].