DOI: 10.1101/505917Dec 26, 2018Paper

Identification of novel risk loci with shared effects on alcoholism, heroin and methamphetamine dependence

BioRxiv : the Preprint Server for Biology
Yan SunJie Shi

Abstract

Different substance dependences have common effects on reward pathway and molecular adaptations, however little is known regarding their shared genetic factors. We aimed to identify the risk genetic variants that are shared for substance dependence (SD). First, promising genome-wide significant loci were identified from 3296 patients (521 alcoholic/1026 heroin/1749 methamphetamine) vs 2859 healthy controls and independently replicated using 1954 patients vs 1904 controls. Second, the functional effects of promising variants on gene expression, addiction characteristics, brain structure (gray and white matter) and addiction behaviors in addiction animal models (chronic administration and self-administration) were assessed. In addition, we assessed the genetic correlation among the three SDs using LD score regression. We identified and replicated three novel loci that were associated with the common risk of heroin, methamphetamine addiction and alcoholism: ANKS1B rs2133896 (Pmeta=3.60*10-9), AGBL4 rs147247472 (Pmeta=3.40*10-12) and CTNNA2 rs10196867 (Pmeta=4.73*10-9). Rs2133896 in ANKS1B was associated with ANKS1B gene expression and had effects on gray matter of the left calcarine and white matter of the right superior longitudi...Continue Reading

Related Concepts

Alcoholic Intoxication, Chronic
Brain
Heroin
Gene Expression
Genome
Gray Matter
Methamphetamine
Rewards
Self Administration
Addictive Behavior

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