کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2827778 | 1162465 | 2011 | 4 صفحه PDF | دانلود رایگان |
In Iran, the prevalence of beta-thalassemia trait is approximately 4–8% in most areas, and in Mazandaran province 10% of the population are carriers. Twenty four beta-globin gene mutations were identified in 1635 persons with beta-thalassemia trait using reverse dot blot and restriction fragment length polymorphism analysis. The predominant mutations included IVSII-1 (G-A) (61%), codon 30 (G-C) (7.5%), codon 22 (− 7 bp) (6.2%), codon 8 (− AA) (5.4%) and IVSI-5 (G-C) (3.6%). These mutations were in different haplotypes, with IVSII-1 being the most heterogeneous. Other less frequent mutations included IVS-II-745 (C-G), codon 44 (− C), codon 39 (C-T), codon 5 (− CT), IVS I-110 (G-A), IVSI-130 (G-C), Fr8/9 (+ G), IVSI-1 (G-A), and IVSI (− 25 bp). All rare mutations except IVSI-130 were encountered in a unique haplotype. The diversity of these mutations reflects the historical admixture of genes in the region. The high prevalence of IVSII-1 (G-A) compared to other parts of the country and the world suggests a founder effect. Our data provide a basis for genetic counseling and prenatal diagnosis.
Journal: Blood Cells, Molecules, and Diseases - Volume 47, Issue 1, 15 June 2011, Pages 29–32