Lower levels of TC and LDL-cholesterol have been reported in beta-thalassemia minor compared to healthy participants.12 Hartman et al17 stated that based on general knowledge, an intermediate level of TC and LDL-cholesterol would be expected in patients with BTI, and they suggested that the lower concentrations they found in BTI than BTM patients could be related to the higher level of Hb and ferritin in patients with BTM. Here, GSTM1 is linked to beta thalassemia.