Genome-wide physical activity interactions in adiposity: A meta-analysis of 200,452 adults

Mariaelisa Graff (Lead / Corresponding author), Robert A. Scott, Anne E. Justice, Kristin L. Young, Mary F. Feitosa, Llilda Barata, Thomas W. Winkler, Audrey Y. Chu, Anubha Mahajan, David Hadley, Luting Xue, Tsegaselassie Workalemahu, Nancy L. Heard-Costa, Marcel Den Hoed, Tarunveer S. Ahluwalia, Qibin Qi, Julius S. Ngwa, Frida Renström, Lydia Quaye, John D EicherJames E. Hayes, Marilyn Cornelis, Zoltan Kutalik, Elise Lim, Jian’an Luan, Jennifer E. Huffman, Weihua Zhang, Wei Zhao, Paula J. Griffin, Toomas Haller, Shafqat Ahmad, Pedro Marques-Vidal, Stephanie Bien, Loic Yengo, Alexander Teumer, Albert Vernon Smith, Meena Kumari, Marie Neergaard Harder, Johanne Marie Justesen, Marcus E. Kleber, Mette Hollensted, Kurt Lohman, Natalia V. Rivera, John B. Whitfield, Jing Hua Zhao, Heather M. Stringham, Leo-Pekka Lyytikäinen, Charlotte Huppertz, Gonneke Willemsen, Blair H. Smith, CHARGE Consortium, EPIC-InterAct Consortium, PAGE Consortium

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    Abstract

    Physical activity (PA) may modify the genetic effects that give rise to increased risk of obesity. To identify adiposity loci whose effects are modified by PA, we performed genome-wide interaction meta-analyses of BMI and BMI-adjusted waist circumference and waist-hip ratio from up to 200,452 adults of European (n = 180,423) or other ancestry (n = 20,029). We standardized PA by categorizing it into a dichotomous variable where, on average, 23% of participants were categorized as inactive and 77% as physically active. While we replicate the interaction with PA for the strongest known obesity-risk locus in the FTO gene, of which the effect is attenuated by ~30% in physically active individuals compared to inactive individuals, we do not identify additional loci that are sensitive to PA. In additional genome-wide meta-analyses adjusting for PA and interaction with PA, we identify 11 novel adiposity loci, suggesting that accounting for PA or other environmental factors that contribute to variation in adiposity may facilitate gene discovery.
    Original languageEnglish
    Article numbere1006528
    Number of pages26
    JournalPLoS Genetics
    Volume13
    Issue number4
    DOIs
    Publication statusPublished - 27 Apr 2017

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