title: -759 C/T polymorphism of 5-HT2C receptor gene and early phase weight gain associated with antipsychotic drug treatment.
abstract: 5-HT2C receptor gene is viewed as an important candidate gene in pharmacogenetic studies of antipsychotic drug-induced weight gain. However, inconsistent results have been obtained in different populations. We investigated the association between the -759C/T polymorphism of the 5-HT2C receptor gene with early phase (after 4 weeks of treatment) weight gain induced by antipsychotic treatment in Korean schizophrenia patients. The study subjects were eighty-four in-patients receiving monotherapy with one of six antipsychotic drugs. Patients with the variant allele (-759T) were found to be less likely to have substantial (> 5%) weight gain (Fisher's exact test, p=0.030), and this association (t=1.91, df=75, p=0.030) was supported by the repeated measures analysis after controlling for possible confounding effects, i.e., age, sex, baseline BMI, and the type of antipsychotic medicine administered. The variant allele also appeared to have a protective effect against weight gain in a subgroup of patients receiving risperidone. These results support the involvement of the -759C/T polymorphism of the 5-HT2C receptor gene in antipsychotics-induced weight gain in the Korean population.
authors.affiliation: Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, 50 Ilwon-Dong, Kangnam-Gu, Seoul 135-710, South Korea.
authors.forename: Seunghyong
authors.initials: S
authors.lastname: Ryu
authors.forename: Eun Young
authors.initials: EY
authors.lastname: Cho
authors.forename: Taesung
authors.initials: T
authors.lastname: Park
authors.forename: Sohee
authors.initials: S
authors.lastname: Oh
authors.forename: Won-Seok
authors.initials: WS
authors.lastname: Jang
authors.forename: Shin-Kyum
authors.initials: SK
authors.lastname: Kim
authors.forename: Dongsoo
authors.initials: D
authors.lastname: Lee
authors.forename: Kyung Sue
authors.initials: KS
authors.lastname: Hong
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects / Q000627:therapeutic use; D015992:Body Mass Index; D001835:Body Weight / Q000187:drug effects; D016009:Chi-Square Distribution; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D044405:Receptor, Serotonin, 5-HT2C / Q000235:genetics*; D012559:Schizophrenia / Q000188:drug therapy / Q000235:genetics* / Q000503:physiopathology*; D015430:Weight Gain / Q000187:drug effects / Q000235:genetics*
chemical_list: D014150:Antipsychotic Agents; D044405:Receptor, Serotonin, 5-HT2C