No significant difference was seen in serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and gamma-glutamyltransferase (γGTP) between hepatic irAEs, AIH, and GVHD patients, whereas these levels showed a higher trend in patients with AIH as compared with the other two disorders. The gene discussed is GPT; the disease is graft versus host disease.