The allele and genotype frequency distribution at polymorphic loci rs3892097 (184G>A) of CYP2D6 gene, rs776746 (6986A>G) of the CYP3A5 gene and rs2740574 (−392A>G) of the CYP3A4 gene in Russians, Tatars, and Bashkirs was examined. Samples were taken from residents of Bashkortostan Republic (1240 men and women aged from 20 to 109 years and consisted of 443 Russians, 517 Tatars, and 280 Bashkirs). Allele identification was conducted using PCR-RFLP or PCR with TaqMan probes. The “nonfunctional” allele rs3892097*A of the CYP2D6 gene was detected in populations of Russians, Tatars, and Bashkirs in 17.2, 9.5, and 7.1% cases, respectively. The rs776746*G allele of the CYP3A5 gene encoding the CYP3A5 isoenzyme with decreased activity was revealed with a frequency of 94.6% in populations of Russians, 94.3% in the Tatar population, and 91.5% in the Bashkir population. The share of the minor allele rs2740574*G of the CYP3A4 was 4.0% in populations of Russians, 0.5% in the Tatar population, and 0.9% in the Bashkir population. It has been previously shown that the rs3892097*A, rs776746*G, and rs2740574*G allele frequencies vary significantly in different world populations. Since allele variants of CYP2D6, CYP3A5, and CYP3A4 genes can play essential role in interindividual and in interethnic differences in the metabolism of many therapeutic agents, the obtained results could be used in the prognosis of pharmacotherapy efficacy in populations of Russians, Tatars, and Bashkirs.
Russian Journal of Genetics – Springer Journals
Published: Feb 1, 2015
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