In addition, although our analysis from the TCGA HCC cohort indicated that ERBB2 mRNA expression in the tumor has no correlation with HBV or HCV infection, alcohol abuse, liver cirrhosis, NAFLD, data on HER2‐overexpression in HCC patients need verification from more cases with different etiology of liver diseases. The gene discussed is ERBB2; the disease is hepatocellular carcinoma.