Analysis of β -thalassemia mutations in Guizhou Province / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 561-564, 2014.
Article
Dans Chinois
| WPRIM
| ID: wpr-291730
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the spectrum of β -thalassemia mutations in Guizhou Province.</p><p><b>METHODS</b>For 542 individuals suspected to have β -thalassemia by decreased mean corpuscular volume (MCV) and corpuscle hemoglobin (MCH) by routine blood test and hemoglobin electrophoresis, reverse dot blot hybridization (RDB) was performed to detect 17 known β -thalassemia mutations, including 8 common and 9 rare mutations. For cases where no mutation was identified, the entire human β -globin gene was screened to find other rare mutations. The distribution and frequencies of detected β -thalassemia mutations were then analyzed.</p><p><b>RESULTS</b>A total of 460 individuals were diagnosed as β -thalassemia by DNA analysis, which included 352 heterozygotes, 67 compound heterozygotes and 41 mutant homozygotes. A total of 12 β -thalassemia mutations were detected in these individuals. The mutations have ranked from high to low frequency as CD17 (40.74%), CD41-42 (33.69%), IVS-II-654 (13.76%), -28 (3.70%), β E (3.35%), CD71-72(1.94%), CD43 (1.06%), IVS-I-1 (0.71%), CD27-28 (0.35%), -29(0.35%), CAP (0.18%), and CD121 (0.18%). The former six mutations have accounted for 97.18% of all. CD121 (GAA> TAA) detected from a heterozygote, as a dominant mutation, has been firstly found in the Chinese population.</p><p><b>CONCLUSION</b>The spectrum of β -thalassemia in Guizhou Province showed certain distinct characteristics, with CD17 being the most common mutation. The newly discovered mutation of CD121 has expanded the spectrum of β -thalassemia in Chinese population. Our result may provide valuable information for the prevention and control of β -thalassemia in Guizhou.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Analyse de mutations d'ADN
/
Chine
/
Bêta-Thalassémie
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Glycoprotéine-IIb de membrane plaquettaire
/
Asiatiques
/
Diagnostic
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Antigènes CD43
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Ethnologie
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Récepteur à l'interleukine-1 de type I
/
Globines bêta
Type d'étude:
Etude diagnostique
/
Étude pronostique
Limites du sujet:
Adolescent
/
Adulte
/
Enfant
/
Enfant d'âge préscolaire
/
Femelle
/
Humains
/
Bébé
/
Mâle
Pays comme sujet:
Asie
langue:
Chinois
Texte intégral:
Chinese Journal of Medical Genetics
Année:
2014
Type:
Article
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