serval:BIB_3012FE323A7B
Association of genetic risk scores with body mass index in Swiss psychiatric cohorts.
10.1097/FPC.0000000000000210
000374885000002
26918956
Saigi-Morgui
N.
author
Vandenberghe
F.
author
Delacrétaz
A.
author
Quteineh
L.
author
Gholamrezaee
M.
author
Aubry
J.M.
author
von Gunten
A.
author
Kutalik
Z.
author
Conus
P.
author
Eap
C.B.
author
article
2016
Pharmacogenetics and Genomics
1744-6880
1744-6872
journal
26
5
208-217
OBJECTIVE: Weight gain is associated with psychiatric disorders and/or with psychotropic drug treatments. We analyzed in three psychiatric cohorts under psychotropic treatment the association of weighted genetic risk scores (w-GRSs) with BMI by integrating BMI-related polymorphisms from the candidate-gene approach and Genome-Wide Association Studies (GWAS).
MATERIALS AND METHODS: w-GRS of 32 polymorphisms associated previously with BMI in general population GWAS and 20 polymorphisms associated with antipsychotics-induced weight gain were investigated in three independent psychiatric samples.
RESULTS: w-GRS of 32 polymorphisms were significantly associated with BMI in the psychiatric sample 1 (n=425) and were replicated in another sample (n=177). Those at the percentile 95 (p95) of the score had 2.26 and 2.99 kg/m higher predicted BMI compared with individuals at the percentile 5 (p5) in sample 1 and in sample 3 (P=0.009 and 0.04, respectively). When combining all samples together (n=750), a significant difference of 1.89 kg/m predicted BMI was found between p95 and p5 individuals at 12 months of treatment. Stronger associations were found among men (difference: 2.91 kg/m of predicted BMI between p95 and p5, P=0.0002), whereas no association was found among women. w-GRS of 20 polymorphisms was not associated with BMI. The w-GRS of 52 polymorphisms and the clinical variables (age, sex, treatment) explained 1.99 and 3.15%, respectively, of BMI variability.
CONCLUSION: The present study replicated in psychiatric cohorts previously identified BMI risk variants obtained in GWAS analyses from population-based samples. Sex-specific analysis should be considered in further analysis.
eng
60_published
true
peer-reviewed
Publication types: Journal Article Publication Status: ppublish
University of Lausanne
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