The present study has been carried out to estimate the gene frequency of thalassemia and abnormal hemoglobins in a random Turkish population. A total of 1,000 Haemoglobin A2 blood samples have been studied. Fifteen of 900 adults had elevated Hb A2 concentrations. 0.60% of the population studied had an electrophoretically demonstrable hemoglobin abnormality: 3 Hb AS, 1 Hb AE, 1 Hb AD and one Hb A’2 (‘split’ A2). Signs of α-thalassemia were found in one case. This study indicates that the incidence of β -thalassemia trait in Turkish population as 1.66%
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Çavdar et al. (2009) studied this question.