title: Solitary and multiple uterine leiomyomas among Caucasian women: two different disorders?
abstract: OBJECTIVE
  To investigate whether polymorphism in CYP17A1 gene is associated with uterine leiomyomas (ULM) and to evaluate differences in epidemiologic and genetic factors among solitary and multiple leiomyomas.
  
  
  METHODS
  Prospective case control study.
  
  
  METHODS
  Tertiary gynecology department.
  
  
  METHODS
  One hundred eighty-one women with clinically and surgically diagnosed ULM, 41 healthy control subjects, and 92 population control subjects.
  
  
  METHODS
  Completing the questionnaires, peripheral venous puncture.
  
  
  METHODS
  Polymerase chain reaction and restriction-fragment-length polymorphism analyses were performed to genotype women regarding the CYP17A1 -34 A/G (rs743572) gene polymorphisms. Epidemiologic data was collected by questionnaire and compared between women with ULM and healthy control subjects.
  
  
  RESULTS
  Women with multiple ULM had higher prevalence of positive family history, lower age at menarche, lower parity, higher percentage of smoking, younger age at first sexual intercourse, lower prevalence of CYP17A1 AA genotype and lower CYP17A1 A allele frequency than healthy control subjects. These trends were not apparent among women with solitary ULM.
  
  
  CONCLUSIONS
  Carriage of CYP17A1 AA is protective for developing ULM in our population. Women with solitary ULM mostly resembled healthy control subjects, whereas women with multiple ULM differed in CYP17A1 AA genotype and external stimuli.
authors.affiliation: Department of General Gynecology and Gynecological Urology, University Clinical Center Maribor, Maribor, Slovenia. majapakiz@gmail.com
authors.forename: Maja
authors.initials: M
authors.lastname: Pakiz
authors.forename: Uros
authors.initials: U
authors.lastname: Potocnik
authors.forename: Igor
authors.initials: I
authors.lastname: But
mesh_terms: D000328:Adult; D000483:Alleles; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006801:Humans; D007889:Leiomyoma / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000145:classification / Q000453:epidemiology / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide; D015995:Prevalence; D017524:Slovenia / Q000453:epidemiology; D013254:Steroid 17-alpha-Hydroxylase / Q000235:genetics; D014594:Uterine Neoplasms / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D044465:White People / Q000235:genetics*
chemical_list: C501892:CYP17A1 protein, human; D013254:Steroid 17-alpha-Hydroxylase