TY - JOUR
T1 - The relationship between alcohol- and sleep-related traits
T2 - Results from polygenic risk score and Mendelian randomization analyses
AU - Chakravorty, Subhajit
AU - Kember, Rachel L.
AU - Mazzotti, Diego R.
AU - Dashti, Hassan S.
AU - Toikumo, Sylvanus
AU - Gehrman, Philip R.
AU - Kranzler, Henry R.
N1 - Publisher Copyright:
© 2023
PY - 2023/10/1
Y1 - 2023/10/1
N2 - Study objectives: We investigated whether genetic risk for insomnia and sleep duration abnormalities are associated with AUD and alcohol consumption. We also evaluated the causal relationships between sleep- and alcohol-related traits. Methods: Individual-level phenotype and genotype data from the Million Veteran Program were used. Polygenic risk scores (PRS) were computed using summary statistics from two recent discovery GWAS of insomnia (N= 453,379 European-ancestry (EA) individuals) and sleep duration (N= 446,118 EAs) and tested for association with lifetime AUD diagnosis (N= 34,658 EA cases) and past-year Alcohol Use Disorders Identification Test-Consumption scale scores (AUDIT-C, N= 200,680 EAs). Bi-directional two-sample Mendelian Randomization (MR) analyses assessed causal associations between the two sleep traits and the two alcohol-related traits. Results: The insomnia PRS was positively associated with AUD at 2/9 PRS thresholds, with p<0.01 being the most significant (OR = 1.02, p = 3.48 × 10−5). Conversely, insomnia PRS was negatively associated with AUDIT-C at 6/9 PRS thresholds (most significant threshold being p = 0.001 (β = −0.02, p = 5.6 × 10−8). Sleep duration PRS was positively associated with AUDIT-C at 2/9 PRS thresholds, with the most significant threshold being p = 1 × 10−6 (β = 0.01, p = 0.0009). MR analyses supported a significant positive causal effect of insomnia on AUD (14 SNPs; β = 104.14; SE = 16.19; p = 2.22 × 10−5), although with significant heterogeneity. MR analyses also showed that shorter sleep duration had a causal effect on the risk of AUD (27 SNPs; β = −63.05; SE = 3.54; p = 4.55 × 10−16), which was robust to sensitivity analyses. Conclusion: The genetic risk for insomnia shows pleiotropy with AUD, and sleep continuity abnormalities have a causal influence on the development of AUD.
AB - Study objectives: We investigated whether genetic risk for insomnia and sleep duration abnormalities are associated with AUD and alcohol consumption. We also evaluated the causal relationships between sleep- and alcohol-related traits. Methods: Individual-level phenotype and genotype data from the Million Veteran Program were used. Polygenic risk scores (PRS) were computed using summary statistics from two recent discovery GWAS of insomnia (N= 453,379 European-ancestry (EA) individuals) and sleep duration (N= 446,118 EAs) and tested for association with lifetime AUD diagnosis (N= 34,658 EA cases) and past-year Alcohol Use Disorders Identification Test-Consumption scale scores (AUDIT-C, N= 200,680 EAs). Bi-directional two-sample Mendelian Randomization (MR) analyses assessed causal associations between the two sleep traits and the two alcohol-related traits. Results: The insomnia PRS was positively associated with AUD at 2/9 PRS thresholds, with p<0.01 being the most significant (OR = 1.02, p = 3.48 × 10−5). Conversely, insomnia PRS was negatively associated with AUDIT-C at 6/9 PRS thresholds (most significant threshold being p = 0.001 (β = −0.02, p = 5.6 × 10−8). Sleep duration PRS was positively associated with AUDIT-C at 2/9 PRS thresholds, with the most significant threshold being p = 1 × 10−6 (β = 0.01, p = 0.0009). MR analyses supported a significant positive causal effect of insomnia on AUD (14 SNPs; β = 104.14; SE = 16.19; p = 2.22 × 10−5), although with significant heterogeneity. MR analyses also showed that shorter sleep duration had a causal effect on the risk of AUD (27 SNPs; β = −63.05; SE = 3.54; p = 4.55 × 10−16), which was robust to sensitivity analyses. Conclusion: The genetic risk for insomnia shows pleiotropy with AUD, and sleep continuity abnormalities have a causal influence on the development of AUD.
KW - Alcohol drinking
KW - Alcohol use disorder
KW - And mendelian randomization analysis
KW - Sleep duration
KW - Sleep initiation and maintenance disorders
UR - https://www.scopus.com/pages/publications/85168272257
U2 - 10.1016/j.drugalcdep.2023.110912
DO - 10.1016/j.drugalcdep.2023.110912
M3 - Article
C2 - 37591043
AN - SCOPUS:85168272257
SN - 0376-8716
VL - 251
JO - Drug and Alcohol Dependence
JF - Drug and Alcohol Dependence
M1 - 110912
ER -