title: [Prevalence of CYP2C19 polymorphisms involved in clopidogrel metabolism in Fujian Han population].
abstract: OBJECTIVE
  To investigate the frequency of CYP2C19 polymorphisms involved in clopidogrel metabolism in Fujian Han population.
  
  
  METHODS
  Frequencies of CYP2C19* 2, CYP2C19*3 and CYP2C19*17 in 1001 unrelated Fujian Han volunteers were determined with polymerase chain reaction-restriction fragment length polymorphism and direct sequencing method.
  
  
  RESULTS
  The frequencies of CYP2C19*2, *3 and *17 were 32.4%, 5.8% and 0.4%, respectively. According to genotyping results, intermediate metabolizers (CYP2C19 *1/*2 or *1/*3) and poor metabolizers (CYP2C19 *2/*2 and *2/*3) respectively accounted for 47.95% and 13.99% of all subjects. Above frequencies were similar to those of Japan, Korea, Singapore, Malaysia, Thailand and Chinese Dai, Mongolian,Li and Hui ethnics (P>0.05), but were significantly different from those of Chinese Kazakh and Uygur ethnics, and people from Iran, Russia, Italy, Poland, Norway, Canada native Indians, Bolivia, Egypt or Tanzania (P<0.05).
  
  
  CONCLUSIONS
  Ethnic/regional diversity exist with regard to the prevalence of CYP2C19 polymorphisms. No significant difference were found between Fujian Han Chinese and Dai, Mongolian, Li and Hui from China or other populations from East and Southeast Asia, but higher frequencies of intermediate metabolizers and poor metabolizers compared with populations of Kazakh and Uygur in China, and people from Europe, South America and Africa.
authors.affiliation: Department of Neurology, Fujian Medical University, Fuzhou, Fujian, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wei
authors.forename: Ling
authors.initials: L
authors.lastname: Fang
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.forename: Ting
authors.initials: T
authors.lastname: Zhang
authors.forename: Jia-bin
authors.initials: JB
authors.lastname: Zeng
authors.forename: Min-ting
authors.initials: MT
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics*; D002681:China; D000077144:Clopidogrel; D065731:Cytochrome P-450 CYP2C19; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D013988:Ticlopidine / Q000031:analogs & derivatives* / Q000378:metabolism; D055815:Young Adult
chemical_list: D000077144:Clopidogrel; D001189:Aryl Hydrocarbon Hydroxylases; C045793:CYP2C19 protein, human; D065731:Cytochrome P-450 CYP2C19; D013988:Ticlopidine