The Frequency and Spectrum of HBB Gene Mutation in ß-Thalassemia Patients in Saudi Arabia.

Autor: Alotibi, Raniah S., Alharbi, Eman, Aljuhani, Bushra, Alamri, Bdoor, Elsayid, Mohieldin, Alhawiti, Naif M., Hussain, Fazal, Almohareb, Fahad, Colcol, Cherry, Qureshi, Shoeb
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Zdroj: Journal of Natural Science, Biology & Medicine; Jan-Jun2019, Vol. 10 Issue 1, p97-102, 6p
Abstrakt: Background: ß-thalassemia is an autosomal disorder of the blood caused by mutations in HBB gene responsible for the production of ß-globin. The HBB mutations reduce the synthesis of ß-globin which results in severe anemia. A high frequency of ß-thalassemia is reported in Saudi Arabia, and hence this study assessed the most frequent ß-thalassemia mutations in Saudi Arabia. Materials and Methods: Data of preimplantation genetic diagnosis and gene sequencing for 59 ß-thalassemia patients and carriers were collected from the electronic medical record system at KFSH and RC and were analyzed using SPSS version 19. Results: Twelve mutations were confirmed in the five regions investigated in this study. Cd39 was identified as the most frequent mutation with a frequency of 22.7%, with high prevalence in the central parts of Saudi Arabia. IVS-II-1 G > A was the second frequent mutation observed with a frequency of 21.2%, while IVS-I-1 (G-A) and IVS I-130G>C mutations were observed to be least frequent in the study. Of the 12 gene mutations, 85% were frequently observed in Saudi Arabia, while 15% were less frequent. The regional distribution of HBB gene mutations varied considerably. Conclusion: The population diversity in Saudi Arabia contributes to the variability in the prevalence rates of HBB gene mutations. Nevertheless, this study identifies Cd39 and IVS-II-1 G > A as the predominant mutations in HBB gene in Saudi Arabia. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index