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The Reversion of cg05575921 Methylation in Smoking Cessation: A Potential Tool for Incentivizing Healthy Aging
Journal article   Open access   Peer reviewed

The Reversion of cg05575921 Methylation in Smoking Cessation: A Potential Tool for Incentivizing Healthy Aging

Robert Philibert, James A Mills, Jeffrey D Long, Sue Ellen Salisbury, Alejandro Comellas, Alicia Gerke, Kelsey Dawes, Mark Vander Weg and Eric A Hoffman
Genes, Vol.11(12), pp.1-12
11/27/2020
DOI: 10.3390/genes11121415
PMCID: PMC7760261
PMID: 33260961
url
https://doi.org/10.3390/genes11121415View
Published (Version of record) Open Access

Abstract

Smoking is the largest preventable cause of mortality and the largest environmental driver of epigenetic aging. Contingency management-based strategies can be used to treat smoking but require objective methods of verifying quitting status. Prior studies have suggested that cg05575921 methylation reverts as a function of smoking cessation, but that it can be used to verify the success of smoking cessation has not been unequivocally demonstrated. To test whether methylation can be used to verify cessation, we determined monthly cg05575921 levels in a group of 67 self-reported smokers undergoing biochemically monitored contingency management-based smoking cessation therapy, as part of a lung imaging protocol. A total of 20 subjects in this protocol completed three months of cotinine verified smoking cessation. In these 20 quitters, the reversion of cg05575921 methylation was dependent on their initial smoking intensity, with methylation levels in the heaviest smokers reverting to an average of 0.12% per day over the 3-month treatment period. In addition, we found suggestive evidence that some individuals may have embellished their smoking history to gain entry to the study. Given the prominent effect of smoking on longevity, we conclude that DNA methylation may be a useful tool for guiding and incentivizing contingency management-based approaches for smoking cessation.
DNA methylation AHRR cg05575921 contingency management smoking cessation

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