title: [Association of three single nucleotide polymorphisms of the E-cadherin gene with susceptibility to epithelial ovarian carcinoma].
abstract: OBJECTIVE
  To investigate the association of three single nucleotide polymorphisms (SNPs), i.e. -160C/A, -347G/GA and 3'UTR+ 54C/T, in the promoter region of E-cadherin gene (CDH1) with the risk of epithelial ovarian carcinoma.
  
  
  METHODS
  The SNPs of CDH1 gene were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 207 epithelial ovarian carcinoma patients and 256 unrelated healthy women; immunohistochemistry was used to measure the level of CDH1 in different genotypes of 3'UTR+ 54C/T locus.
  
  
  RESULTS
  There were no significant difference in the frequencies between patients and control women in the two loci (-160C/A, -347G/GA) of CDH1 gene (P> 0.05). However, there was significant difference in the frequency of CDH1 3'-UTR+ 54C/T genotypes (CC, CT and TT) between patients and controls (P< 0.05). The frequencies of the CC genotype and the C allele in patients (65.2%, 89.1%) were significantly higher than that in controls (52.7%ì64.5%) (P< 0.01). The CC genotype significantly increased the risk to epithelial ovarian carcinoma, with adjusted odds ratio of 1.85 (95%CI= 1.27-2.69). In the ovarian tissues of patients, the expression of CDH1 from CC genotype was significantly lower than that with the other genotypes (CT+ TT) (P< 0.05). The -160C/A and -347G/GA polymorphisms were in linkage disequilibrium (D'= 0.999582) by analyzing with 2LD software. The -160A/-347GA haplotype was only observed in patients (5.1%), the -160C/-347GA haplotype decreased susceptibility to epithelial ovarian carcinoma, with adjusted odds ratio of 0.66 (95%CI= 0.45-0.96).
  
  
  CONCLUSIONS
  CDH1 -160C/A and -347G/GA polymorphisms were not associated with the risk of epithelial ovarian carcinoma. However, the haplotype may have impact on the risk of epithelial ovarian carcinoma. The CC genotype of 3'-UTR + 54CT may be a potential risk factor for the epithelial ovarian carcinoma.
authors.affiliation: Department of Obstetrics and Gynecology, the Fourth Affiliated Hospital, Hebei Medical University, Shijiazhuang, Hebei, 050011 P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Liang
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Na
authors.initials: N
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D015820:Cadherins / Q000235:genetics*; D002277:Carcinoma / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D055815:Young Adult
chemical_list: D015820:Cadherins