Genome-wide association study of phenotypes measuring progression from first cocaine or opioid use to dependence reveals novel risk genes.
Sherva R, Zhu C, Wetherill L et al.
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Aim: Substance use disorders (SUD) result in substantial morbidity and mortality worldwide. Opioids, and to a lesser extent cocaine, contribute to a large percentage of this health burden. Despite their high heritability, few genetic risk loci have been identified for either opioid or cocaine dependence (OD or CD, respectively). A genome-wide association study of OD and CD related phenotypes reflecting the time between first self-reported use of these substances and a first DSM-IV dependence diagnosis was conducted.
3,554 African American cases, 478 African American controls, 2,712 European ancestry cases, 915 European ancestry controls
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