title: Relationship between FokI polymorphism in the vitamin D receptor gene and fibromyalgia syndrome.
abstract: OBJECTIVE
  The aim of this study was to evaluate the vitamin D receptor (VDR) gene FokI polymorphism frequencies distribution in subjects with fibromyalgia syndrome (FMS) compared to healthy controls.
  
  
  METHODS
  Using a case-control design, 100 female patients, who were diagnosed with FMS according to the American College of Rheumatology criteria and 100 healthy female subjects were enrolled in this study. FokI polymorphisms of the VDR gene were analyzed by restriction fragment length polymorphisms (RFLP) in both groups.
  
  
  RESULTS
  No significant differences in the frequencies distribution of both genotype and alleles of the FokI polymorphism in the VDR gene were observed between the two groups.
  
  
  CONCLUSIONS
  The relationship between VDR gene FokI polymorphism and FMS, particularly in Turkish women, could not be determined in this study. However, further studies with larger patient numbers may be needed to prove a relation between VDR gene polymorphism and FMS.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Bulent Ecevit University, Zonguldak, Turkey.
authors.forename: Erdem
authors.initials: E
authors.lastname: Maraslı
authors.affiliation: Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Bulent Ecevit University, Zonguldak, Turkey.
authors.forename: Senay
authors.initials: S
authors.lastname: Ozdolap
authors.affiliation: Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Bulent Ecevit University, Zonguldak, Turkey.
authors.forename: Selda
authors.initials: S
authors.lastname: Sarıkaya
mesh_terms: D016022:Case-Control Studies; D005260:Female; D005356:Fibromyalgia / Q000175:diagnosis / Q000235:genetics*; D005787:Gene Frequency; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D010641:Phenotype; D011110:Polymorphism, Genetic; D018167:Receptors, Calcitriol / Q000235:genetics*; D012307:Risk Factors; D013577:Syndrome; D014421:Turkey
chemical_list: D018167:Receptors, Calcitriol; C579457:VDR protein, human
keywords: chronic pain; fibromyalgia; polymorphism; vitamin D; vitamin D receptor