No lobular inflammation, ALT/AST elevation, steatosis, or hepatocyte hypertrophy was observed in treated or untreated WT, Epm2a−/− or Epm2b−/− mice, except for mild lobular inflammation in Epm2a−/− and Epm2b−/− mice injected with the rAAVP31‐Null vector. The gene discussed is GPT; the disease is steatosis.