Evidence map›Paper›PMID 19246443›Full record

SynthesisNicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco2009

Association of the DRD2 gene Taq1A polymorphism and smoking behavior: a meta-analysis and new data.

Marcus R Munafò, Nicholas J Timpson, Sean P David, Shah Ebrahim, Debbie A Lawlor

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 5 pooled it
4.3field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 5 syntheses or guidelines pooled it, 95 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Marcus R MunafòDepartment of Experimental Psychology, University of Bristol, 12a Priory Road, Bristol BS8 1TU, UK. marcus.munafo@bristol.ac.uk
Nicholas J Timpson
Sean P David
Shah Ebrahim
Debbie A Lawlor
University of Bristol · GB

Funding

Psychobiological /Genetic Determinants-Smoking CessationK08DA014276 · NIDA · MEMORIAL HOSPITAL OF RHODE ISLAND · PI DAVID, SEAN P. · 2002 to 2006
$786k
Exploratory/Developmental Study of Pharmacogenetic Smoking Cessation TherapyR21DA027331 · NIDA · STANFORD UNIVERSITY · PI DAVID, SEAN P. · 2009 to 2010
$423k
British Heart FoundationDepartment of HealthMedical Research Council G0600705NIDA NIH HHS K08 DA014276NIDA NIH HHS R21 DA027331
6 · The paper itself

Abstract

introductionMany studies have investigated the association of the dopamine type-2 receptor (DRD2) Taq1A polymorphism with tobacco use and cigarette smoking behaviors, but findings remain equivocal. There is a biological basis for considering that this association differs by sex, and differences in subpopulations might explain some of the contradictory evidence.

methodsOur a priori hypothesis was that the association of the DRD2 Taq1A polymorphism with smoking behavior would be more prominent in females than males. We therefore investigated the strength of evidence for an association between the DRD2 Taq1A polymorphism and smoking behavior in a large sample of females and used meta-analytic techniques to synthesize existing published data and explore the role of sex in explaining any heterogeneity between studies.

resultsWe did not observe any strong evidence of association between the DRD2 Taq1A polymorphism and smoking behavior, including smoking initiation, smoking persistence, and smoking rate, either in our female sample or in our meta-analysis of 29 studies, comprising 28 published studies and the data from the present study. Metaregression suggested an association between the proportion of male participants in a study and the individual study effect size, indicating a larger effect size with a greater proportion of male participants for smoking initiation and smoking persistence. This effect did not appear to be due to the inclusion of the data from the present study. DISCUSSION: Available evidence does not support an association between the DRD2 Taq1A polymorphism and smoking behavior. Contrary to our a priori hypothesis, we found evidence of a stronger association in males than in females.

Indexed as

Polymorphism, Single NucleotideAllelesBehavior, AddictiveEvidence-Based MedicineFemaleGene FrequencyGenetic Predisposition to DiseaseHumansMaleRandomized Controlled Trials as TopicReceptors, Dopamine D2Sex FactorsSmokingReceptors, Dopamine D2

Identifiers

PMID19246443
PMCPMC3203402
OpenAlexW2114435510

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.