Molecular Spectrum of α- and β-Globin Gene Mutations Detected in the Population of Guangxi Zhuang Autonomous Region, People's Republic of China

Autor: Juan Du, Chen-Guang Zheng, Ze Yang, Ke Chen, Ming Liu, Yi-Ge Yang
Rok vydání: 2011
Předmět:
Zdroj: Hemoglobin. 35:28-39
ISSN: 1532-432X
0363-0269
Popis: We studied 6,023 individuals diagnosed with anemia on the basis of hematological examinations. The study showed that the frequency of α-thalassemia (α-thal) carriers was 26.9% and β-thal carriers comprised 19.9% of the population of Guangxi Zhuang Autonomous Region, People's Republic of China (PCR). The diagnosed α-thal anomalies were related to six gene mutations and 16 genotypes, whereas the β-thal were related to 10 gene mutations and 65 genotypes. The four most common mutations [codons 41/42 (-TTCT), codon 17 (AT), -28 (AG) and IVS-II-654 (CT)] accounted for 86.38% of the β-globin gene mutations. Risk analysis of mutation alleles in thalassemia cases identified four mutations (-α(3.7), -α(4.2), αα(Westmead) and αα(CS)) that were associated with α-thal intermedia, with an odds ratio (OR) of 62.41-32.68. Four high-risk mutations, namely, codon 26 (GA), -28, codons 41/42 and codon 17, were associated with β-thal major (β-TM), with an OR of 3.93-2.20. The present study provides important genetic information on thalassemia in this population.
Databáze: OpenAIRE
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