Genetic studies of body mass index yield new insights for obesity biology

Adam E. Locke, Bratati Kahali, Sonja I. Berndt, Anne E. Justice, Tune H. Pers, Felix R. Day, Corey Powell, Sailaja Vedantam, Martin L. Buchkovich, Jian Yang, Damien C. Croteau-Chonka, Tonu Esko, Tove Fall, Teresa Ferreira, Stefan Gustafsson, Zoltan Kutalik, Jian'an Luan, Reedik Maegi, Joshua C. Randall, Thomas W. WinklerAndrew R. Wood, Tsegaselassie Workalemahu, Jessica D. Faul, Jennifer A. Smith, Jing Hua Zhao, Wei Zhao, Jin Chen, Rudolf Fehrmann, Asa K. Hedman, Juha Karjalainen, Ellen M. Schmidt, Devin Absher, Najaf Amin, Denise Anderson, Sander W. van der Laan, Jessica van Setten, Hae-Won Uh, Hester M. den Ruijter, Frans L. Moll, Gerard Pasterkamp, Folkert W. Asselbergs, Paul I. W. de Bakker, Pieter Zanen, , , , , , , , , , , , , ,

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Obesity is heritable and predisposes to many diseases. To understand the genetic basis of obesity better, here we conduct a genome-wide association study and Metabochip meta-analysis of body mass index (BMI), a measure commonly used to define obesity and assess adiposity, in upto 339,224 individuals. This analysis identifies 97 BMI-associated loci (P <5 x 10(-8)), 56 of which are novel. Five loci demonstrate clear evidence of several independent association signals, and many loci have significant effects on other metabolic phenotypes. The 97 loci account for similar to 2.7% of BMI variation, and genome-wide estimates suggest that common variation accounts for >20% of BMI variation. Pathway analyses provide strong support for a role of the central nervous systemin obesity susceptibility and implicate new genes and pathways, including those related to synaptic function, glutamate signalling, insulin secretion/action, energy metabolism, lipid biology and adipogenesis.

Original languageEnglish
Pages (from-to)197-U401
Number of pages23
JournalNature
Volume518
Issue number7538
DOIs
Publication statusPublished - 12 Feb 2015

Keywords

  • GENOME-WIDE ASSOCIATION
  • PROVIDES INSIGHTS
  • GLYCEMIC TRAITS
  • HUMAN HEIGHT
  • LOCI
  • METAANALYSIS
  • VARIANTS
  • EXPRESSION
  • PATHWAYS
  • ARCHITECTURE

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