title: Is genetic polymorphism of ER-α, CYP1A1, and CYP1B1 a risk factor for uterine leiomyoma?
abstract: BACKGROUND
  Uterine leiomyoma is the most common benign smooth muscle tumor.
  
  
  OBJECTIVE
  This study was carried out to evaluate the association of ER-α, CYP1A1, and CYP1B1 polymorphisms with uterine leiomyoma in Egyptian women.
  
  
  METHODS
  The study population consisted of 160 patients with uterine leiomyoma and 100 healthy women as control. The genetic polymorphisms for ER-α MSP1 exon 1, CYP1B1 Leu432Val, and CYP1A1 Ile462Val were analyzed by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) and DNA sequencing methods.
  
  
  RESULTS
  There were no statistically significant differences in the overall associations between the ER-α exon I CT genotypes and uterine leiomyoma (P = 0.47). However, an elevated risk of uterine leiomyoma was observed among women with the CYP1A1 Ile462Val AG genotype (P = 0.07) and CYP1B1 Leu 432Val C/C genotype (P = 0.08).
  
  
  CONCLUSIONS
  We concluded that the carriage of CYP1A1 Ile462Val AG and CYP1B1 Leu 432Val CC genotypes predict the susceptibility to leiomyoma in Egyptian women and they are likely to contribute in the pathogenesis of leiomyoma.
authors.affiliation: Department of Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
authors.forename: Gehan A
authors.initials: GA
authors.lastname: El-Shennawy
authors.forename: Abd-Alla A
authors.initials: AA
authors.lastname: Elbialy
authors.forename: Anwar E
authors.initials: AE
authors.lastname: Isamil
authors.forename: Manal M
authors.initials: MM
authors.lastname: El Behery
mesh_terms: D000328:Adult; D000483:Alleles; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics*; D016022:Case-Control Studies; D019363:Cytochrome P-450 CYP1A1 / Q000235:genetics*; D065633:Cytochrome P-450 CYP1B1; D004534:Egypt; D047628:Estrogen Receptor alpha / Q000235:genetics*; D005091:Exons / Q000235:genetics; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D006580:Genetic Carrier Screening; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006801:Humans; D007889:Leiomyoma / Q000235:genetics*; D008875:Middle Aged; D011110:Polymorphism, Genetic / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length / Q000235:genetics; D014594:Uterine Neoplasms / Q000235:genetics*
chemical_list: D047628:Estrogen Receptor alpha; D001189:Aryl Hydrocarbon Hydroxylases; C585496:CYP1B1 protein, human; D019363:Cytochrome P-450 CYP1A1; D065633:Cytochrome P-450 CYP1B1