Cited by 82Substance Abuse Treatment and OutcomesGenetic Associations and EpidemiologyNeurotransmitter Receptor Influence on Behavior

Evidence for an interaction between age at first drink and genetic influences on DSM-IV alcohol dependence symptoms

Open access
Agrawal, Arpana, Sartor, Carolyn E., Lynskey, Michael T., Grant, Julia D., Pergadia, Michele L., Grucza, Richard, Bucholz, Kathleen K., Nelson, Elliot C. +3 more·2009·Alcoholism: Clinical and Experimental Research

Abstract

BACKGROUND: Research suggests that individuals who start drinking at an early age are more likely to subsequently develop alcohol dependence. Twin studies have demonstrated that the liability to age at first drink and to alcohol dependence are influenced by common genetic and environmental factors, however, age at first drink may also environmentally mediate increased risk for alcohol dependence. In this study, we examine whether age at first drink moderates genetic and environmental influences, via gene x environment interactions, on DSM-IV alcohol dependence symptoms. METHODS: Using data on 6,257 adult monozygotic and dizygotic male and female twins from Australia, we examined the extent to which age at first drink (i) increased mean alcohol dependence symptoms and (ii) whether the magnitude of additive genetic, shared, and nonshared environmental influences on alcohol dependence symptoms varied as a function of decreasing age. Twin models were fitted in Mx. RESULTS: Risk for alcohol dependence symptoms increased with decreasing age at first drink. Heritable influences on alcohol dependence symptoms were considerably larger in those who reported an age at first drink prior to 13 years of age. In those with later onset of alcohol use, variance in alcohol dependence was largely attributable to nonshared environmental variance (and measurement error). This evidence for unmeasured gene x measured environment interaction persisted even when controlling for the genetic influences that overlapped between age at first drink and alcohol dependence symptoms. CONCLUSIONS: Early age at first drink may facilitate the expression of genes associated with vulnerability to alcohol dependence symptoms. This is important to consider, not only from a public health standpoint, but also in future genomic studies of alcohol dependence.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/j.1530-0277.2009.01044.x

Cites

64 of 64 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Agrawal, A., Sartor, C. E., Lynskey, M. T., Grant, J. D., Pergadia, M. L., Grucza, R., Bucholz, K. K., Nelson, E. C., Madden, P. A. F., Martin, N. G., & Heath, A. C.
Affiliations
Washington University in St. Louis (US)
Venue
Alcoholism: Clinical and Experimental Research
Publisher
Wiley
Published
2009-11-19
Volume
33
Issue
12
Pages
2047-2056
ISSN
  • 0145-6008 (ISSN-L)
  • 1530-0277
OpenAlex
W2122394002
Cited by
82
References
64
Citations by year
2026: 1 · 2024: 1 · 2023: 3 · 2021: 4 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 6 · 2016: 4 · 2015: 5 · 2014: 13 · 2013: 12 · 2012: 8
FWCI
5.40
Type
journal article
Language
en
Open access
Locations
  • Alcoholism Clinical and Experimental Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • ABMRF/The Foundation for Alcohol Research
  • National Institute on Alcohol Abuse and Alcoholism (AA11998, F32AA013221, R37AA007728, R01AA013321, AA13221, P50AA011998, P60AA011998, R01AA007728, AA-07728)
  • National Institute on Drug Abuse (R01DA018660, DA018660)
Topics
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
age at first drink, alcoholism, gene-environment interaction, heritability, nonshared environment, shared environment, monozygotic twins, dizygotic twins, alcohol dependence symptoms, alcohol use onset, genetic susceptibility
MeSH terms
Adult, Alcohol Drinking, Alcoholism, Australia, Female, Humans, Individuality, Male, Models, Genetic, Psychiatric Status Rating Scales, Risk Factors, Social Environment, Survival Analysis, Age of Onset, Genetic Predisposition to Disease, Young Adult

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review