Abstract
Alcohol consumption is a moderately heritable trait, but the genetic basis in humans is largely unknown, despite its clinical and societal importance. We report a genome-wide association study meta-analysis of ∼2.5 million directly genotyped or imputed SNPs with alcohol consumption (gram per day per kilogram body weight) among 12 population-based samples of European ancestry, comprising 26,316 individuals, with replication genotyping in an additional 21,185 individuals. SNP rs6943555 in autism susceptibility candidate 2 gene (AUTS2) was associated with alcohol consumption at genome-wide significance (P = 4 × 10(-8) to P = 4 × 10(-9)). We found a genotype-specific expression of AUTS2 in 96 human prefrontal cortex samples (P = 0.026) and significant (P < 0.017) differences in expression of AUTS2 in whole-brain extracts of mice selected for differences in voluntary alcohol consumption. Down-regulation of an AUTS2 homolog caused reduced alcohol sensitivity in Drosophila (P < 0.001). Our finding of a regulator of alcohol consumption adds knowledge to our understanding of genetic mechanisms influencing alcohol drinking behavior.
Original language | English |
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Pages (from-to) | 7119-7124 |
Number of pages | 6 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 108 |
Issue number | 17 |
DOIs | |
Publication status | Published - 26 Apr 2011 |
Keywords
- Alcohol Drinking
- Animals
- Drosophila melanogaster
- European Continental Ancestry Group
- Female
- Gene Expression Regulation
- Genome-Wide Association Study
- Genotype
- Humans
- Male
- Mice
- Nuclear Proteins
- Polymorphism, Single Nucleotide
- Proteins
- Quantitative Trait, Heritable
- Journal Article
- Research Support, Non-U.S. Gov't