Obesity-susceptibility loci have a limited influence on birth weight: A meta-analysis of up to 28,219 individuals

Tuomas O. Kilpeläinen, Marcel Den Hoed, Ken K. Ong, Anders Grøntved, Soren Brage, Karen Jameson, Cyrus Cooper, Kay Tee Khaw, Ulf Ekelund, Nicholas J. Wareham, Ruth J F Loos, Rachel M. Freathy, Dennis O. Mook-Kanamori, Ulla Sovio, Inga Prokopenko, Nicholas J. Timpson, Diane J. Berry, Nicole M. Warrington, Elisabeth Widen, Jouke Jan HottengaMarika Kaakinen, Leslie A. Lange, Jonathan P. Bradfield, Marjan Kerkhof, Julie A. Marsh, Reedik Mägi, Chih Mei Chen, Helen N. Lyon, Mirna Kirin, Linda S. Adair, Yurii S. Aulchenko, Amanda J. Bennett, Judith B. Borja, Nabila Bouatia-Naji, Pimphen Charoen, Lachlan J M Coin, Diana L. Cousminer, Eco J C De Geus, Panos Deloukas, Paul Elliott, David M. Evans, Philippe Froguel, Beate Glaser, Christopher J. Groves, Anna Liisa Hartikainen, Neelam Hassanali, Joel N. Hirschhorn, Albert Hofman, Jeff M P Holly, Elina Hyppönen, Stavroula Kanoni, Bridget A. Knight, Jaana Laitinen, Cecilia M. Lindgren, Wendy L. McArdle, Paul F. O'Reilly, Craig E. Pennell, Dirkje S. Postma, Anneli Pouta, Adaikalavan Ramasamy, Nigel W. Rayner, Susan M. Ring, Fernando Rivadeneira, Beverley M. Shields, David P. Strachan, Ida Surakka, Anja Taanila, Carla Tiesler, Andre G. Uitterlinden, Cornelia M. Van Duijn, Alet H. Wijga, Gonneke Willemsen, Haitao Zhang, Jianhua Zhao, James F. Wilson, Eric A P Steegers, Andrew T. Hattersley, Johan G. Eriksson, Leena Peltonen, Karen L. Mohlke, Struan F A Grant, Hakon Hakonarson, Gerard H. Koppelman, George V. Dedoussis, Joachim Heinrich, Matthew W. Gillman, Lyle J. Palmer, Timothy M. Frayling, Dorret I. Boomsma, George Davey Smith, Chris Power, Vincent W V Jaddoe, Marjo Riitta Jarvelin, Mark I. McCarthy

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    Abstract

    Background: High birth weight is associated with adult body mass index (BMI). We hypothesized that birth weight and BMI may partly share a common genetic background. Objective: The objective was to examine the associations of 12 established BMI variants in or near the NEGR1, SEC16B, TMEM18, ETV5, GNPDA2, BDNF, MTCH2, BCDIN3D, SH2B1, FTO, MC4R, and KCTD15 genes and their additive score with birth weight. Design: A meta-analysis was conducted with the use of 1) the European Prospective Investigation into Cancer and Nutrition (EPIC)-Norfolk, Hertfordshire, Fenland, and European Youth Heart Study cohorts (nmax = 14,060); 2) data extracted from the Early Growth Genetics Consortium meta-analysis of 6 genome-wide association studies for birth weight (nmax = 10,623); and 3) all published data (nmax = 14,837). Results: Only the MTCH2 and FTO loci showed a nominally significant association with birth weight. The BMI-increasing allele of the MTCH2 variant (rs10838738) was associated with a lower birth weight (β ± SE: -13 ± 5 g/allele; P = 0.012; n = 23,680), and the BMI-increasing allele of the FTO variant (rs1121980) was associated with a higher birth weight (β ± SE: 11 ± 4 g/allele; P = 0.013; n = 28,219). These results were not significant after correction for multiple testing. Conclusions: Obesity-susceptibility loci have a small or no effect on weight at birth. Some evidence of an association was found for the MTCH2 and FTO loci, ie, lower and higher birth weight, respectively. These findings may provide new insights into the underlying mechanisms by which these loci confer an increased risk of obesity.

    Original languageEnglish
    Pages (from-to)851-860
    Number of pages10
    JournalAmerican Journal of Clinical Nutrition
    Volume93
    Issue number4
    DOIs
    Publication statusPublished or Issued - 1 Apr 2011

    ASJC Scopus subject areas

    • Medicine (miscellaneous)
    • Nutrition and Dietetics

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