The prevalence of subjects screened for hemoglobinopathies was 7.6 % (n = 222), i.e. 6.8 % (Hb SS: 3.1 %; Hb SC: 3.7 %) for major sickle cell syndrome and 0.8 % for rare profiles. Here, GSTM1 is linked to hemoglobinopathy.