| Literature DB >> 22823124 |
Karin J H Verweij1, Anna A E Vinkhuyzen, Beben Benyamin, Michael T Lynskey, Lydia Quaye, Arpana Agrawal, Scott D Gordon, Grant W Montgomery, Pamela A F Madden, Andrew C Heath, Timothy D Spector, Nicholas G Martin, Sarah E Medland.
Abstract
While initiation of cannabis use is around 40% heritable, not much is known about the underlying genetic aetiology. Here, we meta-analysed two genome-wide association studies of initiation of cannabis use with > 10 000 individuals. None of the genetic variants reached genome-wide significance. We also performed a gene-based association test, which also revealed no significant effects of individual genes. Finally, we estimated that only approximately 6% of the variation in cannabis initiation is due to common genetic variants. Future genetic studies using larger sample sizes and different methodologies (including sequencing) might provide more insight in the complex genetic aetiology of cannabis use.Entities:
Keywords: Association; cannabis; genetics; heritability
Mesh:
Year: 2012 PMID: 22823124 PMCID: PMC3548058 DOI: 10.1111/j.1369-1600.2012.00478.x
Source DB: PubMed Journal: Addict Biol ISSN: 1355-6215 Impact factor: 4.280