A genome-wide association meta-analysis identifies new childhood obesity loci

Jonathan P Bradfield, H Rob Taal, Nicholas J Timpson, André Scherag, Cecile Lecoeur, Nicole M Warrington, Elina Hypponen, Claus Holst, Beatriz Valcarcel, Elisabeth Thiering, Rany M Salem, Fredrick R Schumacher, Diana L Cousminer, Patrick M A Sleiman, Jianhua Zhao, Robert I Berkowitz, Karani S Vimaleswaran, Ivonne Jarick, Craig E Pennell, David M EvansBeate St Pourcain, Diane J Berry, Dennis O Mook-Kanamori, Albert Hofman, Fernando Rivadeneira, André G Uitterlinden, Cornelia M van Duijn, Ralf J P van der Valk, Johan C de Jongste, Dirkje S Postma, Dorret I Boomsma, W James Gauderman, Mohamed T Hassanein, Cecilia M Lindgren, Reedik Mägi, Colin A G Boreham, Charlotte E Neville, Luis A Moreno, Paul Elliott, Anneli Pouta, Anna-Liisa Hartikainen, Mingyao Li, Olli Raitakari, Terho Lehtimäki, Johan G Eriksson, Aarno Palotie, Jean Dallongeville, Shikta Das, Hans Bisgaard, Thorkild I A Sørensen, Early Growth Genetics Consortium

240 Citations (Scopus)

Abstract

Multiple genetic variants have been associated with adult obesity and a few with severe obesity in childhood; however, less progress has been made in establishing genetic influences on common early-onset obesity. We performed a North American, Australian and European collaborative meta-analysis of 14 studies consisting of 5,530 cases (≥95th percentile of body mass index (BMI)) and 8,318 controls (<50th percentile of BMI) of European ancestry. Taking forward the eight newly discovered signals yielding association with P < 5 × 10 -6 in nine independent data sets (2,818 cases and 4,083 controls), we observed two loci that yielded genome-wide significant combined P values near OLFM4 at 13q14 (rs9568856; P = 1.82 × 10 -9; odds ratio (OR) = 1.22) and within HOXB5 at 17q21 (rs9299; P = 3.54 × 10 -9; OR = 1.14). Both loci continued to show association when two extreme childhood obesity cohorts were included (2,214 cases and 2,674 controls). These two loci also yielded directionally consistent associations in a previous meta-analysis of adult BMI.

Original languageEnglish
JournalNature Genetics
Volume44
Issue number5
Pages (from-to)526-31
Number of pages6
ISSN1061-4036
DOIs
Publication statusPublished - May 2012

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