Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient

Hb S [β6(A3)Glu→Val, GAG>GTG] is a β-globin gene variant that has a very low incidence in the Thai population. Coinheritance of Hb S and β0-thalassemia (β-thal) can result in severe clinical conditions. This study reports the case of a Thai patient with a compound heterozygosity for Hb S and β0-t...

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Main Authors: Sakorn Pornprasert, Sitthichai Panyasai, Kanyakan Kongthai, Kallayanee Treesuwan
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/51393
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spelling th-cmuir.6653943832-513932018-09-04T06:11:14Z Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient Sakorn Pornprasert Sitthichai Panyasai Kanyakan Kongthai Kallayanee Treesuwan Biochemistry, Genetics and Molecular Biology Medicine Hb S [β6(A3)Glu→Val, GAG>GTG] is a β-globin gene variant that has a very low incidence in the Thai population. Coinheritance of Hb S and β0-thalassemia (β-thal) can result in severe clinical conditions. This study reports the case of a Thai patient with a compound heterozygosity for Hb S and β0-thal codon 17 (A>T). His hemoglobin (Hb), hematocrit (packed cell volume, PCV), mean corpuscular volume (MCV) and mean corpuscular Hb (MCH) levels were all less than the lower limits, while red cell distribution width (RDW) was higher than the upper limit. Levels of Hbs S, F and A2 detected by high performance liquid chromatography (HPLC) were comparable to those from capillary electrophoresis (CE). As Hb S has a similar electrophoretic mobility and the HPLC profile is also similar to those of Hb Tak [β147, Term→Thr (AC)] and Hb D-Punjab [β121(GH4) Glu→Gln, GAA>CAA], DNA sequencing was then performed. This was to detect β0-thal, and to differentiate Hb S from the Hb Tak and Hb D-Punjab mutations. The β0-thal codon 17 and Hb S mutations were detected indicating that coinheritance of these two mutations can be found in the Thai population. Therefore, to provide proper clinical management and genetic counseling of this rare case, DNA analysis should be performed in all cases when a peak at the S-window is detected by HPLC or CE. Copyright © Informa Healthcare USA, Inc. 2018-09-04T06:01:11Z 2018-09-04T06:01:11Z 2012-06-01 Journal 1532432X 03630269 2-s2.0-84860711532 10.3109/03630269.2012.669358 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84860711532&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/51393
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Biochemistry, Genetics and Molecular Biology
Medicine
spellingShingle Biochemistry, Genetics and Molecular Biology
Medicine
Sakorn Pornprasert
Sitthichai Panyasai
Kanyakan Kongthai
Kallayanee Treesuwan
Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
description Hb S [β6(A3)Glu→Val, GAG>GTG] is a β-globin gene variant that has a very low incidence in the Thai population. Coinheritance of Hb S and β0-thalassemia (β-thal) can result in severe clinical conditions. This study reports the case of a Thai patient with a compound heterozygosity for Hb S and β0-thal codon 17 (A>T). His hemoglobin (Hb), hematocrit (packed cell volume, PCV), mean corpuscular volume (MCV) and mean corpuscular Hb (MCH) levels were all less than the lower limits, while red cell distribution width (RDW) was higher than the upper limit. Levels of Hbs S, F and A2 detected by high performance liquid chromatography (HPLC) were comparable to those from capillary electrophoresis (CE). As Hb S has a similar electrophoretic mobility and the HPLC profile is also similar to those of Hb Tak [β147, Term→Thr (AC)] and Hb D-Punjab [β121(GH4) Glu→Gln, GAA>CAA], DNA sequencing was then performed. This was to detect β0-thal, and to differentiate Hb S from the Hb Tak and Hb D-Punjab mutations. The β0-thal codon 17 and Hb S mutations were detected indicating that coinheritance of these two mutations can be found in the Thai population. Therefore, to provide proper clinical management and genetic counseling of this rare case, DNA analysis should be performed in all cases when a peak at the S-window is detected by HPLC or CE. Copyright © Informa Healthcare USA, Inc.
format Journal
author Sakorn Pornprasert
Sitthichai Panyasai
Kanyakan Kongthai
Kallayanee Treesuwan
author_facet Sakorn Pornprasert
Sitthichai Panyasai
Kanyakan Kongthai
Kallayanee Treesuwan
author_sort Sakorn Pornprasert
title Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
title_short Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
title_full Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
title_fullStr Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
title_full_unstemmed Coinheritance of Hb S [β6(A3)Glu→Val, GAG>GTG] with β0-Thalassemia codon 17 (A>T) in a thai patient
title_sort coinheritance of hb s [β6(a3)glu→val, gag>gtg] with β0-thalassemia codon 17 (a>t) in a thai patient
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84860711532&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/51393
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