GSTM1 and anemia (phenotype): The inspection showed normal physical development and hematological parameters (RBC:4.75*1012/L, Hb: 133 g/L, MCV:83fl, MCH:28pg, MCHC: 336 g/L, RDW:12%), and the patient had no previous history of anemia, had not received any blood transfusions, and did not have an abnormal family history.