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Type: Journal article
Title: The protective effect of the obesity-associated rs9939609: A variant in fat mass- and obesity-associated gene on depression
Author: Samaan, Z.
Anand, S.
Zhang, X.
Desai, D.
Rivera, M.
Pare, G.
Thabane, L.
Xie, C.
Gerstein, H.
Engert, J.
Craig, I.
Cohen-Woods, S.
Mohan, V.
Diaz, R.
Wang, X.
Liu, L.
Corre, T.
Preisig, M.
Kutalik, Z.
Bergmann, S.
et al.
Citation: Molecular Psychiatry, 2013; 18(12):1281-1286
Publisher: Nature Publishing Group
Issue Date: 2013
ISSN: 1359-4184
1476-5578
Statement of
Responsibility: 
Z Samaan, S Anand, X Zhang, D Desai, M Rivera, G Pare, L Thabane, C Xie, H Gerstein, JC Engert, I Craig, S Cohen-Woods, V Mohan, R Diaz, X Wang, L Liu, T Corre, M Preisig, Z Kutalik, S Bergmann, P Vollenweider, G Waeber, S Yusuf and D Meyre
Abstract: Candidate gene and genome-wide association studies have not identified common variants, which are reliably associated with depression. The recent identification of obesity predisposing genes that are highly expressed in the brain raises the possibility of their genetic contribution to depression. As variation in the intron 1 of the fat mass- and obesity-associated (FTO) gene contributes to polygenic obesity, we assessed the possibility that FTO gene may contribute to depression in a cross-sectional multi-ethnic sample of 6561 depression cases and 21 932 controls selected from the EpiDREAM, INTERHEART, DeCC (depression case–control study) and Cohorte Lausannoise (CoLaus) studies. Major depression was defined according to DSM IV diagnostic criteria. Association analyses were performed under the additive genetic model. A meta-analysis of the four studies showed a significant inverse association between the obesity risk FTO rs9939609 A variant and depression (odds ratio=0.92 (0.89, 0.97), P=3 × 10−4) adjusted for age, sex, ethnicity/population structure and body-mass index (BMI) with no significant between-study heterogeneity (I2=0%, P=0.63). The FTO rs9939609 A variant was also associated with increased BMI in the four studies (β 0.30 (0.08, 0.51), P=0.0064) adjusted for age, sex and ethnicity/population structure. In conclusion, we provide the first evidence that the FTO rs9939609 A variant may be associated with a lower risk of depression independently of its effect on BMI. This study highlights the potential importance of obesity predisposing genes on depression.
Keywords: depression; FTO; rs9939609
Rights: © 2012 Macmillan Publishers Limited
RMID: 0020124299
DOI: 10.1038/mp.2012.160
Appears in Collections:Psychiatry publications

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