Repository logo
 

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

Published version
Peer-reviewed

Type

Article

Change log

Authors

Scott, Robert A 
Justice, Anne E 
Feitosa, Mary F 

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.

Description

Keywords

Adiposity, Alpha-Ketoglutarate-Dependent Dioxygenase FTO, Body Mass Index, Epigenomics, Exercise, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Genotype, Humans, Male, Obesity, Waist Circumference, Waist-Hip Ratio

Journal Title

PLoS Genet

Conference Name

Journal ISSN

1553-7390
1553-7404

Volume Title

13

Publisher

Public Library of Science (PLoS)
Sponsorship
Medical Research Council (MC_UU_12015/2)
Medical Research Council (MC_UU_12015/1)
Department of Health (via National Institute for Health Research (NIHR)) (NF-SI-0512-10135)
MRC (MC_PC_13048)
MRC (MC_PC_13046)
Medical Research Council (MC_UU_12015/3)
Wellcome Trust (091551/Z/10/A)
Medical Research Council (G0701863)
Medical Research Council (MC_U106179471)
TCC (None)
Medical Research Council (MC_U106179473)
Medical Research Council (G0701863/1)
Medical Research Council (MC_PC_13048)
Medical Research Council (MC_PC_13046)