title: The association between HTR2C polymorphisms and obesity in psychiatric patients using antipsychotics: a cross-sectional study.
abstract: The use of antipsychotics is associated with an increased risk of obesity. This consideration makes it important to search for determinants that can predict the risk for antipsychotic-induced obesity. In this cross-sectional study, we investigated whether polymorphisms in the HTR2C gene were associated with obesity (body mass index >30 kg/m2) in patients using antipsychotics. We examined polymorphisms in the promoter region of the HTR2C gene ((HTR2C:c.1-142948(GT)n, rs3813928 (-997 G/A), rs3813929 (-759 C/T), rs518147 (-697 G/C)) and an intragenic polymorphism (rs1414334:C>G). The results of the logistic regression were expressed as adjusted odds ratios (OR). In total, we included 127 patients mainly diagnosed with schizophrenia or schizoaffective disorder (89%). The results indicate that a combined genotype carrying the variant HTR2C:c.1-142948(GT)n 13 repeat allele, the common allele rs3813929 C, the variant allele rs518147 C and the variant allele rs1414334 C is significantly related to an increased risk of obesity (OR 3.71 (95% confidence interval: 1.24-11.12)).
authors.affiliation: Department of Clinical Pharmacoepidemiology, Division of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, Utrecht, The Netherlands.
authors.forename: H
authors.initials: H
authors.lastname: Mulder
authors.forename: B
authors.initials: B
authors.lastname: Franke
authors.forename: A Aart
authors.initials: AA
authors.lastname: van der-Beek van der
authors.forename: J
authors.initials: J
authors.lastname: Arends
authors.forename: F W
authors.initials: FW
authors.lastname: Wilmink
authors.forename: A C G
authors.initials: AC
authors.lastname: Egberts
authors.forename: H
authors.initials: H
authors.lastname: Scheffer
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects*; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006801:Humans; D007438:Introns; D015810:Linkage Disequilibrium; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000139:chemically induced / Q000235:genetics* / Q000503:physiopathology; D016017:Odds Ratio; D018579:Patient Selection; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic; D011618:Psychotic Disorders / Q000188:drug therapy* / Q000235:genetics; D044405:Receptor, Serotonin, 5-HT2C / Q000235:genetics*; D018570:Risk Assessment; D012307:Risk Factors; D012559:Schizophrenia / Q000188:drug therapy* / Q000235:genetics
chemical_list: D014150:Antipsychotic Agents; D044405:Receptor, Serotonin, 5-HT2C