A joint view on genetic variants for adiposity differentiates subtypes with distinct metabolic implications

Winkler, Thomas W. and Guenther, Felix and Hoellerer, Simon and Zimmermann, Martina and Loos, Ruth J. F. and Kutalik, Zoltan and Heid, Iris M. (2018) A joint view on genetic variants for adiposity differentiates subtypes with distinct metabolic implications. NATURE COMMUNICATIONS, 9: 1946. ISSN 2041-1723,

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Abstract

The problem of the genetics of related phenotypes is often addressed by analyzing adjusted-model traits, but such traits warrant cautious interpretation. Here, we adopt a joint view of adiposity traits in similar to 322,154 subjects (GIANT consortium). We classify 159 signals associated with body mass index (BMI), waist-to-hip ratio (WHR), or WHR adjusted for BMI (WHRadjBMI) at P < 5 x 10(-8), into four classes based on the direction of their effects on BMI and WHR. Our classes help differentiate adiposity genetics with respect to anthropometry, fat depots, and metabolic health. Class-specific Mendelian randomization reveals that variants associated with both WHR-decrease and BMI increase are linked to metabolically rather favorable adiposity through beneficial hip fat. Class-specific enrichment analyses implicate digestive systems as a pathway in adiposity genetics. Our results demonstrate that WHRadjBMI variants capture relevant effects of "unexpected fat distribution given the BMI" and that a joint view of the genetics underlying related phenotypes can inform on important biology.

Item Type: Article
Uncontrolled Keywords: GENOME-WIDE ASSOCIATION; BODY-MASS INDEX; FAT; TISSUE; RISK; ARCHITECTURE; METAANALYSIS; INSIGHTS; DISEASE; BIOLOGY;
Subjects: 500 Science > 570 Life sciences
Divisions: Medicine > Institut für Epidemiologie und Präventivmedizin > Lehrstuhl für Genetische Epidemiologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 23 Mar 2020 08:31
Last Modified: 23 Mar 2020 08:31
URI: https://pred.uni-regensburg.de/id/eprint/14575

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