Laboratory investigations revealed microcytic anemia, leukopenia, and thrombocytopenia, elevated levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), gamma glutamyltransferase (GGT), and total serum bilirubin (Table 1). The gene discussed is GPT; the disease is microcytic anemia.