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Multiplex pyrosequencing method to determine CYP2C9*3, VKORC1*2, and CYP4F2*3 polymorphisms simultaneously: its application to a Korean population and comparisons with other ethnic groups

Authors
Kim, Kyoung-AhSong, Wan-GeunLee, Hae-MiJoo, Hyun-JinPark, Ji-Young
Issue Date
11월-2014
Publisher
SPRINGER
Keywords
CYP2C9; VKORC1; CYP4F2; Pyrosequencing; Pharmacogenetics; Ethnic difference; Koreans
Citation
MOLECULAR BIOLOGY REPORTS, v.41, no.11, pp.7305 - 7312
Indexed
SCIE
SCOPUS
Journal Title
MOLECULAR BIOLOGY REPORTS
Volume
41
Number
11
Start Page
7305
End Page
7312
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/96964
DOI
10.1007/s11033-014-3617-4
ISSN
0301-4851
Abstract
Warfarin is an anticoagulant that is difficult to administer because of the wide variation in dose requirements to achieve a therapeutic effect. CYP2C9, VKROC1, and CYP4F2 play important roles in warfarin metabolism, and their genetic polymorphisms are related to the variability in dose determination. In this study we describe a new multiplex pyrosequencing method to identify CYP2C9*3 (rs1057910), VKORC1*2 (rs9923231), and CYP4F2*3 (rs2108661) simultaneously. A multiplex pyrosequencing method to simultaneously detect CYP2C9*3, VKORC1*2, and CYP4F2*3 alleles was designed. We assessed the allele frequencies of the polymorphisms in 250 Korean subjects using the multiplex pyrosequencing method. The results showed 100 % concordance between single and multiplex pyrosequencing methods, and the polymorphisms identified by pyrosequencing were also validated with the direct sequencing method. The allele frequencies of these polymorphisms in this population were as follows: 0.040 for CYP2C9*3, 0.918 for VKORC1*2, and 0.416 for CYP4F2*3. Although the allele frequencies of the CYP2C9*3 and VKROC1*2 were comparable to those in Japanese and Chinese populations, their frequencies in this Korean population differed from those in other ethnic groups; the CYP4F2*3 frequency was the highest among other ethnic populations including Chinese and Japanese populations. The pyrosequencing methods developed were rapid and reliable for detecting CYP2C9*3, VKORC1*2, and CYP4F2*3. Large ethnic differences in the frequency of these genetic polymorphisms were noted among ethnic groups. CYP4F2*3 exhibited its highest allele frequency among other ethnic populations compared to that in a Korean population.
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