PreprintCited by 14Genetic Associations and EpidemiologySubstance Abuse Treatment and OutcomesAlcohol Consumption and Health Effects

Genome-wide association study meta-analysis of the Alcohol Use Disorder Identification Test (AUDIT) in two population-based cohorts (N=141,932)

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Sanchez-Roige, Sandra, Palmer, Abraham A., Fontanillas, Pierre, Elson, Sarah L., The 23andMe Research Team, Substance Use Disorder Working Group of the Psychiatric Genomics Consortium, Adams, Mark J., Howard, David M. +6 more·2018·bioRxiv (Cold Spring Harbor Laboratory)

Preprint — published as 10.1176/appi.ajp.2018.18040369 · Paper page

Abstract

Alcohol use disorders ( AUD ) are common conditions that have enormous social and economic consequences. We obtained quantitative measures using the Alcohol Use Disorder Identification Test ( AUDIT ) from two population-based cohorts of European ancestry: UK Biobank ( UKB ; N=121,604) and 23andMe (N=20,328) and performed a genome-wide association study (GWAS) meta-analysis. We also performed GWAS for AUDIT items 1-3, which focus on consumption ( AUDIT-C ), and for items 4-10, which focus on the problematic consequences of drinking ( AUDIT-P ). The GWAS meta-analysis of AUDIT total score identified 10 associated risk loci. Novel associations localized to genes including JCAD and SLC39A13; we also replicated previously identified signals in the genes ADH1B, ADH1C, KLB , and GCKR . The dimensions of AUDIT showed positive genetic correlations with alcohol consumption (r g =0.76-0.92) and Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) alcohol dependence (r g =0.33-0.63). AUDIT-P and AUDIT-C showed significantly different patterns of association across a number of traits, including psychiatric disorders. AUDIT-P was positively genetically correlated with schizophrenia (r g =0.22, p=3.0×10 −10 ), major depressive disorder (r g =0.26, p=5.6×10 −3 ), and attention-deficit/hyperactivity disorder (ADHD; r g =0.23, p=1.1×10 −5 ), whereas AUDIT-C was negatively genetically correlated with major depressive disorder (r g =−0.24, p=3.7×10 −3 ) and ADHD (rg=−0.10, p=1.8×10 −2 ). We also used the AUDIT data in the UKB to identify thresholds for dichotomizing AUDIT total score that optimize genetic correlations with DSM-IV alcohol dependence. Coding individuals with AUDIT total score of ≤4 as controls and ≥12 as cases produced a high genetic correlation with DSM-IV alcohol dependence (r g =0.82, p=3.2×10 −6 ) while retaining most subjects. We conclude that AUDIT scores ascertained in population-based cohorts can be used to explore the genetic basis of both alcohol consumption and AUD.

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  • Subsequent analyses suggest these genetic correlation estimates are sensitive to sample characteristics, with somewhat higher genetic correlations reported in analysis of alcohol consumption in the full UK Biobank (rg = 0.75) and of AUDIT in combined data from 23andMe participants and UK Biobank (rg = 0.39).

    “Subsequent analyses suggest these estimates are sensitive to sample characteristics, with somewhat higher genetic correlations reported in analysis of alcohol consumption in the full UK Biobank29 (rg = 0.75) and of AUDIT in combined data from 23andMe participants and UK Biobank30 (rg = 0.39).”
  • This distinction appears to be the case in studies that used specific cut-offs to harmonize AUDIT scores with AD data.

    “This appears to be the case in studies that used specific cut-offs to harmonize AUDIT scores with AD data30,34.”
  • That study also found that a score reflecting items related to problem drinking (AUDIT-P) resulted in a stronger genetic correlation (rg = 0.64) than a score related to alcohol consumption alone (rg = 0.33).

    “Interestingly, that study also found that a score reflecting items related to problem drinking (AUDIT-P) resulted in a stronger genetic correlation (rg = 0.64) than a score related to alcohol consumption alone (rg = 0.33).”
  • The larger of these studies reports that the genetic correlation between AD and AUDIT scores is maximized at an AUDIT cutoff ≥ 20 (with controls defined as those scoring ≤ 4; rg = 0.90).

    “The larger of these studies30 reports that the genetic correlation between AD and AUDIT scores is maximized at an AUDIT cutoff ≥ 20 (with controls defined as those scoring ≤ 4; rg = 0.90).”

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Research works printed but not linked: 5

  1. Jorgenson E, Thai KK, Hoffmann TJ, et al.: Genetic contributors to variation in alcohol consumption vary by race/ethnicity in a large multi-ethnic genome-wide association study. Mol Psychiatry 2017; 22:1359-1367 certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission.
  2. Saunders JB, Babor TF: AUDIT questionnaire. Addiction 1993; 88:1-2
  3. Barbeira A, Shah KP, Torres JM, et al.: MetaXcan: Summary Statistics Based Gene-Level Association Method Infers Accurate PrediXcan Results. bioRxiv 2016; 045260
  4. Hurley TD, Edenberg HJ: Genes encoding enzymes involved in ethanol metabolism. Alcohol Res Curr Rev 2012; 34:339-44
  5. certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission.

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Authors
Sanchez-Roige, S., Palmer, A. A., Fontanillas, P., Elson, S. L., The 23andMe Research Team, Substance Use Disorder Working Group of the Psychiatric Genomics Consortium, Adams, M. J., Howard, D. M., Edenberg, H. J., Davies, G., Crist, R. C., Deary, I. J., McIntosh, A. M., & Clarke, T.-K.
Affiliations
  • University of California San Diego (US)
  • 23andMe (United States) (US)
  • University of Edinburgh (GB)
  • Indiana University School of Medicine (US)
  • University of Pennsylvania (US)
Corresponding author
Clarke, Toni-Kim
Venue
bioRxiv (Cold Spring Harbor Laboratory)
Publisher
openRxiv
Published
2018-03-06
OpenAlex
W2794263701
Cited by
14
References
43
Citations by year
2022: 1 · 2019: 8 · 2018: 5
Type
posted content
Language
en
Open access
Locations
bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
  • Wellcome Trust (104036/Z/14/Z, 104036)
  • Centre for Cognitive Ageing and Cognitive Epidemiology (MR/K026992/1)
  • Directorate for Biological Sciences
  • Medical Research Council (MR/K026992/1, 104036/Z/14/Z)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
Keywords
alcoholism, Alcohol Use Disorders Identification Test, AUDIT-C, alcohol consumption, genetic correlation, schizophrenia, major depressive disorder, attention deficit hyperactivity disorder, ADH1B, ADH1C, KLB, GCKR, genetic susceptibility loci, population-based cohort

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