title: No association between obsessive-compulsive disorder and the 5-HT(1Dbeta) receptor gene.
abstract: OBJECTIVE
  Serotonin abnormalities may be involved in the etiopathogenesis of obsessive-compulsive disorder (OCD). The silent G-to-C substitution at nucleotide 861 of the coding region of the 5-HT(1Dbeta) receptor gene may be associated with liability to OCD. The aim of this study was to investigate this association in an Italian OCD study group.
  
  
  METHODS
  Genotyping for 5-HT(1Dbeta) was performed for 79 nuclear families of probands with OCD. The transmission/disequilibrium test was used to determine transmission of the alleles from parents to offspring.
  
  
  RESULTS
  Of the 79 families, 48 were informative for the analysis, i.e., both parents were genotyped for 5-HT(1Dbeta), and at least one parent was heterozygous. No preferential transmission of either allele of the 5-HT(1Dbeta) gene was observed.
  
  
  CONCLUSIONS
  These data do not support a role for the 5-HT(1Dbeta) receptor gene in conferring susceptibility to OCD.
mesh_terms: D000328:Adult; D017668:Age of Onset; D005190:Family; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000453:epidemiology / Q000235:genetics; D005838:Genotype; D006801:Humans; D007558:Italy / Q000453:epidemiology; D015810:Linkage Disequilibrium / Q000235:genetics; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000235:genetics; D011985:Receptors, Serotonin / Q000235:genetics*
chemical_list: D011985:Receptors, Serotonin