title: [Association of the CYP1B1 gene polymorphism with susceptibility to endometriosis].
abstract: OBJECTIVE
  To study the association between gene polymorphisms of cytochrome P450 1B1 (CYP1B1) in exon 2 codon 119 (G-T) and exon 3 codon 432 (C-G) and the susceptibility to endometriosis.
  
  
  METHODS
  Allele-specific polymerase chain reaction was used to analyze the gene polymorphisms in 55 cases of endometriosis and 45 cases of normal controls.
  
  
  RESULTS
  The frequencies of alleles G and T in codon 119 G/T of CYP1B1 gene showed a significant difference between the endometriosis group and the control group (P<0.05), with an odds ratio of 2.061. There was a significant difference in the frequencies of genotypes G/G, G/T and T/T between the two groups (P<0.05). Compared with wild-type G/G, the susceptibility of endometriosis with genotypes T/T and G/T was 2.625 and 3.214 fold, respectively. In the population with combined genotypes of CYP1B1 codon 119 GT or GG-codon 432 CC, statistically significant difference was observed between cases and controls (GT+CC vs GG+CC, OR=2.976, P<0.05).
  
  
  CONCLUSIONS
  The gene polymorphisms of CYP1B1 in exon 2 codon 119 may be a genetic risky factor for endometriosis. The combination of CYP1B1 -GT and CYP1B1 -CC may act as a risky factor in the development of endometriosis.
authors.affiliation: Department of Obstetrics and Gynaecology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011 PR China.
authors.forename: Yi-ge
authors.initials: YG
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
mesh_terms: D000328:Adult; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics*; D016022:Case-Control Studies; D065633:Cytochrome P-450 CYP1B1; D004715:Endometriosis / Q000235:genetics*; D005091:Exons / Q000235:genetics; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006801:Humans; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D011247:Pregnancy
chemical_list: D001189:Aryl Hydrocarbon Hydroxylases; C585496:CYP1B1 protein, human; D065633:Cytochrome P-450 CYP1B1