Journal of Gambling Studies

, Volume 28, Issue 3, pp 481–491 | Cite as

Association Study on Pathological Gambling and Polymorphisms of Dopamine D1, D2, D3, and D4 Receptor Genes in a Korean Population

  • Sewon Lim
  • Juwon Ha
  • Sam-Wook Choi
  • Seung-Gul Kang
  • Young-Chul ShinEmail author
Original Paper


Several studies have reported that some dopaminergic receptor polymorphisms are associated with pathological gambling (PG). Considering that there are major race and ethnic group difference in dopaminergic polymorphisms, the result of genetic association studies should be confirmed in more homogeneous population to avoid problems of population stratification. The present study aimed to investigate whether selected polymorphisms in the dopamine receptors genes (DRD1, DRD2, DRD3, and DRD4) are associated with PG in Korean population which is consisted of only Korean ancestry. Subjects were 104 men with a diagnosis of PG and 114 unrelated age-matched normal control men. Genotyping was performed for the DRD1 gene –48 A/G, DRD2 gene TaqI A, DRD3 gene Ser9Gly, and DRD4 gene exon III variable number tandem repeat polymorphisms. The method of multifactor dimensionality reduction (MDR) was used to analyze gene–gene interactions. There were no differences in the frequencies of any studied polymorphisms between patients with PG and normal controls. MDR analysis did not show a significant effect of the 4 dopamine receptor gene polymorphisms on susceptibility to PG (P > 0.05). The present study suggests that the analyzed polymorphisms of the dopamine receptor genes might not be associated with PG in a Korean population.


Pathological gambling Dopamine receptor genes Polymorphism 


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Sewon Lim
    • 1
  • Juwon Ha
    • 1
  • Sam-Wook Choi
    • 2
  • Seung-Gul Kang
    • 3
  • Young-Chul Shin
    • 1
    Email author
  1. 1.Department of Psychiatry, Kangbuk Samsung HospitalSungkyunkwan University School of MedicineSeoulRepublic of Korea
  2. 2.Department of Addiction Rehabilitation and Social WelfareEulji UniversitySeongnam-siRepublic of Korea
  3. 3.Department of PsychiatryCatholic University of Daegu School of MedicineDaeguSouth Korea

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