Both the 1993 and 1999 revised criteria clearly implied: (1) liver histology is an important component in the diagnosis of AIH [22], (2) while features typical of AIH such as female gender, raised AST, ALT, and presence of autoantibodies help in making a diagnosis, this scoring system helps rule out other differentials by assigning negative scores to features such as positive viral serology, use of drugs or alcohol, etc. It is important to remember that autoantibodies can be positive in several other chronic liver diseases, including hepatitis C and NASH [23]. The gene discussed is GPT; the disease is autoimmune hepatitis.