Laboratory tests revealed normal blood counts and renal function but showed severe liver dysfunction with significant cytolysis: aspartate aminotransferase (AST) of 250 IU/L (normal: 10-40 IU/L), alanine transaminase (ALT) of 290 IU/L (normal: 7-45 IU/L), alkaline phosphatase (ALP) of 534 IU/L (normal: 35-130 IU/L), and a prothrombin time of 25% (normal: 70-100%), indicating coagulopathy and cholestasis. The gene discussed is GPT; the disease is Decreased liver function.