title: [Association between gene mutation of cytochrome P450 1A1 in exon 7 A4889G locus and susceptibility to endometriosis].
abstract: OBJECTIVE
  To assess the possible association between gene mutation of cytochrome P450 1A1(CYP1A1) in exon 7 A4889G locus and the susceptibility to endometriosis (EM).
  
  
  METHODS
  Allele specific-polymerase chain reaction method was used to analyze gene mutation in exon 7 A4889G locus of CYP1A1 in 76 patients with endometriosis and 80 healthy controls.
  
  
  RESULTS
  The frequency of allele G on A4889G locus of CYP1A1 gene showed a significant difference between the study cohort and the control group (Chi2=7.498, P<0.01), with an odds ratio of 1.957. Statistically significant difference in the frequencies of genotypes AA, AG and GG was observed between the two groups (Chi2=6.915, P<0.05). Individuals with homozygotes for G allele were at higher risk of suffering from EM when compared against those with homozygotes for A allele, the odds ratio being 3.437 (Chi2=5.430, P<0.05).
  
  
  CONCLUSIONS
  The above results suggest that gene mutation of CYP1A1 in exon 7 A4889G locus might be a genetic susceptible factor of endometriosis. The mutation allele of CYP1A1 gene appears to increase the risk of endometriosis.
authors.affiliation: Department of Gynecology and Obstetrics, Zhujiang Hospital, First Military Medical University, Guangzhou, Guangdong, 510282 PR China. pengdx@hotmail.com
authors.forename: Dong-xian
authors.initials: DX
authors.lastname: Peng
authors.forename: Yuan-li
authors.initials: YL
authors.lastname: He
authors.forename: Li-wen
authors.initials: LW
authors.lastname: Qiu
authors.forename: Fang
authors.initials: F
authors.lastname: Yang
authors.forename: Jing-ming
authors.initials: JM
authors.lastname: Lin
mesh_terms: D000483:Alleles; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D004715:Endometriosis / Q000235:genetics*; D005091:Exons / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006801:Humans; D009154:Mutation; D016133:Polymerase Chain Reaction; D011247:Pregnancy
chemical_list: D019363:Cytochrome P-450 CYP1A1