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The genetic aetiology of cannabis use initiation: a meta-analysis of genome-wide association studies and a SNP-based heritability estimation.

Verweij KJ, Vinkhuyzen AA, Benyamin B et al.

22823124 PubMed ID
GWAS Study Type
10091 Participants
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Chapter I

Publication Details

Comprehensive information about this research publication

Authors

VK
Verweij KJ
VA
Vinkhuyzen AA
BB
Benyamin B
LM
Lynskey MT
QL
Quaye L
AA
Agrawal A
GS
Gordon SD
MG
Montgomery GW
MP
Madden PA
HA
Heath AC
ST
Spector TD
MN
Martin NG
MS
Medland SE
Chapter II

Abstract

Summary of the research findings

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.

10,091 individuals from 4,622 families

Chapter III

Study Statistics

Key metrics and study information

10091
Total Participants
GWAS
Study Type
No
Replicated
Australia, U.K.
Recruitment Country
Chapter IV

AI-Generated Summary

AI-generated by DNAGENICS

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