GSTM1 and anemia (phenotype): Before admission, her laboratory tests were significant for anemia (hemoglobin [Hb]: 9.3 g/dL) and elevated liver enzymes (aspartate aminotransferase [AST]: 66 U/L, alanine aminotransferase [ALT]: 45 U/L, alkaline phosphatase [ALP]: 736 U/L).