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Updated: Apr 12, 2026

Cigarette Smoke Exposure in Mice using a Whole-Body Inhalation System
Published on: October 22, 2020
Effect of the rs1051730-rs16969968 variant and smoking cessation treatment: a meta-analysis
Tiffany Leung1, Andrew Bergen2, Marcus Robert Munafò3
11CAMH, Department of Psychiatry, University of Toronto, 250 College St, M5T1R8, Toronto, Canada.
Objective:
To assess if the allelic variations of rs16969968/rs1051730 in the CHRNA5-CHRNA3-CHRNB4 gene cluster are associated with smoking cessation after nicotine replacement therapy (NRT).
Methods:
We searched for NRT studies published from 2000-2013 that reported counts for allelic variation of rs16969968/rs1051730 and measured abstinence rates at the end of NRT treatment. We identified four studies which met the criteria, giving us a test sample of 2036 participants.
Results:
There was no effect of rs16969968/rs1051730 in influencing the success rate at the end of NRT (n = 6, effect size [ES]: 0.969, 95% CI: 0.77 to 1.23, z = 0.27, p = 0.791).
Conclusion:
There is no robust evidence that allelic variations of rs16969968 or rs1051730 are associated with smoking cessation after NRT. Original submitted 26 November 2014; Revision submitted 9 March 2015.
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