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Hemoglobin
international journal for hemoglobin research
Volume 38, 2014 - Issue 5
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Research Article

The Spectrum of β-Thalassemia Mutations in Hatay, Turkey: Reporting Three New Mutations

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Pages 325-328 | Received 19 Dec 2013, Accepted 07 Feb 2014, Published online: 26 Aug 2014
 

Abstract

β-Thalassemia (β-thal) is an important health problem in Hatay, Southern Turkey, because of its high carrier frequency and the frequency of consanguinity. The aim of this study was to reveal the spectrum of β-thal mutations and to provide a foundation for prenatal genetic testing that will be a part of an effective prevention program for β-thal disease in Hatay. We determined the spectrum of β-thal mutations in 93 unrelated affected patients. Using a direct sequencing method, we identified a large number of β-thal mutations. We found different results from other parts of Turkey. A total of 16 different β-thal mutations were characterized in the parents. The most common mutations were: IVS-I-110 (G>A), IVS-I-6 (T>C), IVS-I-1 (G>A), frameshift codon (FSC) 8 (–AA), codon 39 (C>T) and IVS-II-745 (C>G). Since our region has seen many Syrian and Iraqi immigrants, we report that the prevalence of the thalassemia traits are different from other regions of Turkey. Our study demonstrates the spectrum of β-thal mutations in the Hatay region, and that there was great molecular heterogeneity.

Acknowledgements

We thank the staff of the Department of Obstetrics, Mustafa Kemal University Research Hospital, Hatay, Turkey, for their help with this study.

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