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Meta-analysis of the association of the Taq1A polymorphism with the risk of alcohol dependency : a HuGE gene-disease association review
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Smith, Lesley, Watson, Marion, Gates, Simon, Ball, David M. and Foxcroft, David R. (2008) Meta-analysis of the association of the Taq1A polymorphism with the risk of alcohol dependency : a HuGE gene-disease association review. American Journal of Epidemiology, Vol.167 (No.2). pp. 125-138. doi:10.1093/aje/kwm281 ISSN 0002-9262.
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Official URL: http://dx.doi.org/10.1093/aje/kwm281
Abstract
The human dopamine 2 receptor Taq1A allele has been implicated as a vulnerability factor for alcohol dependence in a number of studies and reviews. To determine whether this allele is associated with alcoholism, the authors conducted a Human Genome Epidemiology review and meta-analysis. Forty-four studies with 9,382 participants were included. An odds ratio of 1.38 (95% confidence interval: 1.20, 1.58; heterogeneity, 50.5%) was found for the A1A1 + A1A2 versus the A2A2 genotype. Sensitivity analyses suggested lack of ethnic matching as a possible source of heterogeneity; a small, significant association was detected in studies with ethnic-matched controls (odds ratio = 1.26, 95% confidence interval: 1.02, 1.56; heterogeneity, 37%). Significant associations were also found in analyses restricted to studies reporting use of blinding and those with adequate screening of controls for alcohol dependency. For the A1A1 versus the A1A2 + A2A2 genotype, the odds ratio was 1.22 (95% confidence interval: 1.05, 1.43; heterogeneity, 0%). Sensitivity analyses on groups of studies reporting use of ethnic-matched controls and those that screened controls for alcohol dependency still showed significant associations. The relatively small effect for the association of the A1 allele, or another genetic variant linked to it, with alcohol dependence indicates a multigene causality for this complex disorder.
| Item Type: | Journal Article | ||||
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| Subjects: | R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine R Medicine > RB Pathology R Medicine > RC Internal medicine |
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| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Dependency (Psychology), Epidemiology, Meta-analysis, Alcoholism -- Research, Genetic disorders | ||||
| Journal or Publication Title: | American Journal of Epidemiology | ||||
| Publisher: | Oxford University Press | ||||
| ISSN: | 0002-9262 | ||||
| Official Date: | 15 January 2008 | ||||
| Dates: |
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| Volume: | Vol.167 | ||||
| Number: | No.2 | ||||
| Number of Pages: | 14 | ||||
| Page Range: | pp. 125-138 | ||||
| DOI: | 10.1093/aje/kwm281 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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