RT Journal Article T1 Interaction between the FTO gene, body mass index and depression: meta-analysis of 13701 individuals. A1 Rivera, Margarita A1 Locke, Adam E A1 Corre, Tanguy A1 Czamara, Darina A1 Wolf, Christiane A1 Ching-Lopez, Ana A1 Milaneschi, Yuri A1 Kloiber, Stefan A1 Cohen-Woods, Sarah A1 Rucker, James A1 Aitchison, Katherine J A1 Bergmann, Sven A1 Boomsma, Dorret I A1 Craddock, Nick A1 Gill, Michael A1 Holsboer, Florian A1 Hottenga, Jouke-Jan A1 Korszun, Ania A1 Kutalik, Zoltan A1 Lucae, Susanne A1 Maier, Wolfgang A1 Mors, Ole A1 Müller-Myhsok, Bertram A1 Owen, Michael J A1 Penninx, Brenda W J H A1 Preisig, Martin A1 Rice, John A1 Rietschel, Marcella A1 Tozzi, Federica A1 Uher, Rudolf A1 Vollenweider, Peter A1 Waeber, Gerard A1 Willemsen, Gonneke A1 Craig, Ian W A1 Farmer, Anne E A1 Lewis, Cathryn M A1 Breen, Gerome A1 McGuffin, Peter AB BackgroundDepression and obesity are highly prevalent, and major impacts on public health frequently co-occur. Recently, we reported that having depression moderates the effect of the FTO gene, suggesting its implication in the association between depression and obesity.AimsTo confirm these findings by investigating the FTO polymorphism rs9939609 in new cohorts, and subsequently in a meta-analysis.MethodThe sample consists of 6902 individuals with depression and 6799 controls from three replication cohorts and two original discovery cohorts. Linear regression models were performed to test for association between rs9939609 and body mass index (BMI), and for the interaction between rs9939609 and depression status for an effect on BMI. Fixed and random effects meta-analyses were performed using METASOFT.ResultsIn the replication cohorts, we observed a significant interaction between FTO, BMI and depression with fixed effects meta-analysis (β = 0.12, P = 2.7 × 10-4) and with the Han/Eskin random effects method (P = 1.4 × 10-7) but not with traditional random effects (β = 0.1, P = 0.35). When combined with the discovery cohorts, random effects meta-analysis also supports the interaction (β = 0.12, P = 0.027) being highly significant based on the Han/Eskin model (P = 6.9 × 10-8). On average, carriers of the risk allele who have depression have a 2.2% higher BMI for each risk allele, over and above the main effect of FTOConclusionsThis meta-analysis provides additional support for a significant interaction between FTO, depression and BMI, indicating that depression increases the effect of FTO on BMI. The findings provide a useful starting point in understanding the biological mechanism involved in the association between obesity and depression. YR 2017 FD 2017-06-22 LK http://hdl.handle.net/10668/11335 UL http://hdl.handle.net/10668/11335 LA en DS RISalud RD Apr 19, 2025