CYP3A5*3 and *6 single nucleotide polymorphisms in three distinct Asian populations |
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Authors: | Balram C Zhou Qingyu Cheung Yin Bun Lee Edmund J D |
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Institution: | Division of Clinical Trials and Epidemiological Sciences, National Cancer Centre, 11 Hospital Drive, 169610, Singapore. ctebal@nccs.com.sg |
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Abstract: | OBJECTIVE: To determine the frequencies of two functional single nucleotide polymorphisms, CYP3A5*3 and CYP3A5*6, in the CYP3A5 gene in three distinct Asian ethnic groups, namely, the Chinese, Malays and Indians. METHODS: Single nucleotide polymorphism analyses of CYP3A5*1, *3 and *6 were performed in 296 healthy subjects (108 Chinese, 98 Malays and 90 Indians) using the polymerase chain reaction-restriction fragment length polymorphism method. RESULTS: The *1 allele frequency was 25% in Chinese compared with 40% in Malays and Indians ( P=0.001). The *3 allele frequency was also higher in the Chinese population, being 76% versus 60% in the Malays and Indians ( P=0.001). The Malays and Indians also had allele frequencies significantly different from Caucasian, Japanese and African-American populations (each P
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