A Common Variant in the FTO Gene Is Associated with Body Mass Index and Predisposes to Childhood and Adult Obesity

Author:

Frayling Timothy M.12345,Timpson Nicholas J.12345,Weedon Michael N.12345,Zeggini Eleftheria12345,Freathy Rachel M.12345,Lindgren Cecilia M.12345,Perry John R. B.12345,Elliott Katherine S.12345,Lango Hana12345,Rayner Nigel W.12345,Shields Beverley12345,Harries Lorna W.12345,Barrett Jeffrey C.12345,Ellard Sian12345,Groves Christopher J.12345,Knight Bridget12345,Patch Ann-Marie12345,Ness Andrew R.12345,Ebrahim Shah12345,Lawlor Debbie A.12345,Ring Susan M.12345,Ben-Shlomo Yoav12345,Jarvelin Marjo-Riitta12345,Sovio Ulla12345,Bennett Amanda J.12345,Melzer David12345,Ferrucci Luigi12345,Loos Ruth J. F.12345,Barroso Inês12345,Wareham Nicholas J.12345,Karpe Fredrik12345,Owen Katharine R.12345,Cardon Lon R.12345,Walker Mark12345,Hitman Graham A.12345,Palmer Colin N. A.12345,Doney Alex S. F.12345,Morris Andrew D.12345,Smith George Davey12345,Hattersley Andrew T.12345,McCarthy Mark I.12345

Affiliation:

1. Genetics of Complex Traits, Institute of Biomedical and Clinical Science, Peninsula Medical School, Magdalen Road, Exeter, UK.

2. Diabetes Genetics, Institute of Biomedical and Clinical Science, Peninsula Medical School, Barrack Road, Exeter, UK.

3. Wellcome Trust Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, UK.

4. MRC Centre for Causal Analyses in Translational Epidemiology, Bristol University, Canynge Hall, Whiteladies Road, Bristol, UK.

5. Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital, Oxford, UK.

Abstract

Obesity is a serious international health problem that increases the risk of several common diseases. The genetic factors predisposing to obesity are poorly understood. A genome-wide search for type 2 diabetes–susceptibility genes identified a common variant in the FTO (fat mass and obesity associated) gene that predisposes to diabetes through an effect on body mass index (BMI). An additive association of the variant with BMI was replicated in 13 cohorts with 38,759 participants. The 16% of adults who are homozygous for the risk allele weighed about 3 kilograms more and had 1.67-fold increased odds of obesity when compared with those not inheriting a risk allele. This association was observed from age 7 years upward and reflects a specific increase in fat mass.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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