A systematic genetic polymorphism analysis of the CYP2C9 gene in four different geographical Han populations in mainland China.
While many studies have been focused on CYP2C9*2 and *3 there was a lack of large full gene sequencing on CYP2C9, and this study was designed to fill this gap. We used direct sequencing to systematically screen genetic polymorphisms of the CYP2C9 gene including the 5' -flanking region (2kb), all exons and their adjoining intron regions and the 3' UTR in 400 unrelated healthy Chinese Han volunteers. A total of 27 different CYP2C9 polymorphisms were identified, 3 of which were novel, including one in intron 6, a synonymous variant (1137T>C, Tyr379Tyr), and a deletion mutation in the 3'UTR (1739-1740ATdel), which potentially influences the stability of CYP2C9 mRNA. We identified CYP2C9*1, *2, *3, *8, *11, and *31, of which alleles *8 was identified for the first time in Chinese population while *11 first in Asian. This is the first systematic screening of genetic polymorphisms of CYP2C9 in the Chinese Han population.
Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders Ministry of Education, Shanghai Jiao Tong University, Shanghai 200030, China.
Yuyu
Y
Xiong
Ming
M
Wang
Ke
K
Fang
Qinghe
Q
Xing
Guoyin
G
Feng
Lu
L
Shen
Lin
L
He
Shengying
S
Qin
D020413:3' Untranslated Regions / Q000235:genetics; D020121:5' Untranslated Regions / Q000235:genetics; D000293:Adolescent; D000328:Adult; D000483:Alleles; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics*; D044466:Asian People / Q000235:genetics*; D002681:China / Q000208:ethnology; D065729:Cytochrome P-450 CYP2C9; D005091:Exons / Q000235:genetics; D005260:Female; D005787:Gene Frequency; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007438:Introns / Q000235:genetics; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D017422:Sequence Analysis, DNA; D055815:Young Adult
D020413:3' Untranslated Regions; D020121:5' Untranslated Regions; C450260:CYP2C9 protein, human; D065729:Cytochrome P-450 CYP2C9; D001189:Aryl Hydrocarbon Hydroxylases