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Updated: Mar 19, 2026

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Published on: August 6, 2013
Meta-analysis update of association between dopamine transporter SLC6A3 gene polymorphism and smoking cessation
Hye Duck Choi1, Wan Gyoon Shin2
11 Yeungnam University, Republic of Korea.
Abstract:
The SLC6A3 gene is involved in the dopamine pathway, which influences smoking behavior. This study was conducted to present updated results of a meta-analysis to evaluate the association between SLC6A3 polymorphism and smoking cessation. In total, eight studies were assessed, and 9-repeat alleles and no 9-repeat alleles were compared by smoking cessation outcomes. No significant association between SLC6A3 genotype and smoking cessation was observed for the main analysis (odds ratio = 1.128; 95% confidence interval = 0.981-1.298). In conclusion, the genetic variations in SLC6A3 are not associated with smoking cessation, which is not consistent with the results of the previous meta-analysis.
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