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Genome-Wide Association Study of Opioid Cessation.

Cox JW, Sherva RM, Lunetta KL, Johnson EC, Martin NG, Degenhardt L, Agrawal A, Nelson EC, Kranzler HR, Gelernter J, Farrer LA. Genome-Wide Association Study of Opioid Cessation. Journal of clinical medicine. 2020 Jan 9; 9(1).

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Abstract:

The United States is experiencing an epidemic of opioid use disorder (OUD) and overdose-related deaths. However, the genetic basis for the ability to discontinue opioid use has not been investigated. We performed a genome-wide association study (GWAS) of opioid cessation (defined as abstinence from illicit opioids for > 1 year or < 6 months before the interview date) in 1130 African American (AA) and 2919 European ancestry (EA) participants recruited for genetic studies of substance use disorders and who met lifetime Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria for OUD. Association tests performed separately within each ethnic group were combined by meta-analysis with results obtained from the Comorbidity and Trauma Study. Although there were no genome-wide significant associations, we found suggestive associations with nine independent loci, including three which are biologically relevant: rs4740988 in ( = 2.24 × 10), rs36098404 in ( = 2.24 × 10), and rs592026 in ( = 6.53 × 10). Significant pathways identified in persons of European ancestry (EA) are related to vitamin D metabolism ( = 3.79 × 10) and fibroblast growth factor (FGF) signaling ( = 2.39 × 10). UK Biobank traits including smoking and drinking cessation and chronic back pain were significantly associated with opioid cessation using GWAS-derived polygenic risk scores. These results provide evidence for genetic influences on opioid cessation, suggest genetic overlap with other relevant traits, and may indicate potential novel therapeutic targets for OUD.





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