GSTM1 and beta thalassemia: In our study, 15 (50%) patients were diagnosed with beta-thalassemia Intermedia, nine (30%) were diagnosed with Hb E, and six (20%) were diagnosed with Hb H. Regarding the severity of LIC overload, six (20%) had normal LIC, 18 (60%) had a mild overload, and six (20%) had a moderately severe overload.