GSTM1 and anemia (phenotype): Besides iron treatment has been shown to be effective.7,8,26 An association between anemia and BHS has been demonstrated previously.7,8 It has been demonstrated that children with BHS had significantly lower hemoglobin concentrations than those of controls,26 and from 65% to 69% of patients with BHS had IDA.9,23 Similarly, 69 (47.9%) patients had IDA in our series, and Hb and MCV indices were significantly lower when compared with controls with febrile convulsions.