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. 2019 Sep;83(5):367-372.
doi: 10.1111/ahg.12322. Epub 2019 Apr 26.

Significant association of DRD2 enhancer variant rs12364283 with heroin addiction in a Pakistani population

Shagufta Jabeen  1 , Julia K Pinsonneault  2 , Wolfgang Sadee  2 , Sung-Ha Lee  2 , Muhammad Mobeen Zafar  1 , Muhammad Saqlain Raja  1 , Ghazala Kaukab Raja  1
Affiliations

Significant association of DRD2 enhancer variant rs12364283 with heroin addiction in a Pakistani population

Shagufta Jabeen et al. Ann Hum Genet. 2019 Sep.

Abstract

The dopamine D2 receptor encoded by DRD2 has been implicated in multiple psychiatric disorders, mediated at least in part by two intronic variants affecting mRNA splicing, rs1076560 and rs2283265, and a less frequent enhancer variant, rs12364283, which increases DRD2 mRNA expression. This study tests whether these functionally validated variants confer susceptibility toward heroin addiction in a Pakistani population. A total of 540 heroin addicts and 467 healthy controls were genotyped, basic allele and genotype tests were performed. Neither rs1076560 nor rs2283265 significantly associated with heroin addiction. The enhancer rs12364283 occurs more frequently in heroin-dependent cases than controls (MAF 13% vs. 7%, respectively), revealing significant association with heroin addiction (p = 3.0E-06, OR 2.1). This study identifies rs12364283 of DRD2 as a potential risk factor for heroin addiction in the Pakistani study population. This enhancer variant had been shown to increase DRD2 mRNA expression, a possible factor in increased vulnerability to heroin addiction. Further studies are needed to validate this association of rs12364283.

Keywords: DRD2; addiction; enhancer variant; genetics; opioids.

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Conflict of interest statement

CONFLICT OF INTEREST

There are no conflicts of interest.

References

    1. Corradin O & Scacheri PC 2014. Enhancer variants: evaluating functions in common disease. Genome medicine 6: 85. - PMC - PubMed
    1. Doehring A, Von Hentig N, Graff J, Salamat S, Schmidt M, Geisslinger G, Harder S & Lötsch J 2009. Genetic variants altering dopamine D2 receptor expression or function modulate the risk of opiate addiction and the dosage requirements of methadone substitution. Pharmacogenetics and genomics 19: 407–414. - PubMed
    1. Frank MJ & Hutchison K 2009. Genetic contributions to avoidance-based decisions: striatal D2 receptor polymorphisms. Neuroscience 164(1):131–40. - PMC - PubMed
    1. Hamidovic A, Dlugos A, Skol A, Palmer AA & de Wit H 2009. Evaluation of genetic variability in the dopamine receptor D2 in relation to behavioral inhibition and impulsivity/sensation seeking: an exploratory study with d-amphetamine in healthy participants. Experimental Clinical Psychopharmacology 17(6):374–83. - PMC - PubMed
    1. Kaalund S, Newburn E, Ye T, Tao R, Li C, Deep-Soboslay A, Herman M, Hyde T, Weinberger D & Lipska B 2014. Contrasting changes in DRD1 and DRD2 splice variant expression in schizophrenia and affective disorders, and associations with SNPs in postmortem brain. Molecular psychiatry 19: 1258. - PubMed

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