TWO CASES OF RARE COMPOUND HETEROZYGOTE OF HB D-IRAN AND BETA THALASSEMIA IN VIETNAM

Thanh Ngọc Bình Nguyễn1,, Thùy Trang Nguyễn1, Thị Thu Hà Nguyễn1, Thị Vân Hồng Đặng1, Quốc Chính Dương1
1 NATIONAL INSTITUTE OF HEMATOLOGY AND BLOOD TRANSFUSION

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Abstract

The present report describes the hematologic and molecular study of two cases of Hb D(Iran) associated with β0 thalassemia (CD17) found in Vietnam. The patients showed hypochromic, microcytic red cell picture with reduced red cell indices. The characterization of the hemoglobinopathy was made by electrophoretic and chromatographic techniques and confirmed by sequencing of the beta-globin gene. Both patients were found to be carriers of the gene for β0 thalassemia (c.52A>T (p. Lys18Ter) as seen by the polymerase chain reaction (PCR) and Sanger Sequencing. Single base substitution GAA > CAA (indicative of Hb D-Iran in the heterozygous form was seen in the patients as well as the mother by sequencing.

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References

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