GABA transporter SLC6A11 gene polymorphism associated with tardive dyskinesia
- Authors
- Son, Woo-Young; Lee, Heon-Jeong; Yoon, Ho-Kyoung; Kang, Seung-Gul; Park, Young-Min; Yang, Hee Jung; Choi, Jung-Eun; An, Hyonggin; Seo, Han-Kyu; Kim, Leen
- Issue Date
- Feb-2014
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- GABA; Polymorphism; Tardive dyskinesia
- Citation
- NORDIC JOURNAL OF PSYCHIATRY, v.68, no.2, pp.123 - 128
- Journal Title
- NORDIC JOURNAL OF PSYCHIATRY
- Volume
- 68
- Number
- 2
- Start Page
- 123
- End Page
- 128
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12848
- DOI
- 10.3109/08039488.2013.780260
- ISSN
- 0803-9488
- Abstract
- Background: Gamma-aminobutyric acid (GABA) insufficiency has been reported to be related to the tardive dyskinesia (TD) susceptibility. Inada et al. (Pharmacogenet Genomics 2008; 18: 317-23) identified eight genes belonging to GABA receptor signaling pathway that may be involved in TD susceptibility by genome-wide screening and they replicated associations in an independent sample for polymorphisms in SLC6A11 (GABA transporter 3), GABRG3 (c-3 subunit of GABA-A receptor) and GABRB2 (beta-2 subunit of GABA-A receptor). In this study, we tried to replicate their finding in a larger Korean sample and find if any of the genes was associated with the susceptibility to TD. Methods: We selected three polymorphisms in SLC6A11 (rs4684742), GABRG3 (rs2061051) and GABRB2 (rs918528) from the previous study. We carried out a case-control study (105 TD and 175 non-TD schizophrenic patients) to identify the association between the three candidate polymorphisms and susceptibility to TD and their epistatic interactions by using the multifactor dimensionality reduction (MDR) algorithm. Results: Among the three variants, SCL6A11 genotypes distribution showed a significant difference between the TD and non-TD patients (P = 0.049). However, GABRG3 and GABRB2 genotype distributions were not associated with TD (P = 0.268 and P = 0.976, respectively). Further, our analyses provided signifi cant evidence for gene-gene interactions (SCL6A11, GABRG 3 and GABRB2) in the development of TD. The odds ratio increased to 2.53 (CI = 1.515-4.217, P = 0.0003) when the genetic susceptibility to TD was analyzed with the three genes considered altogether through MDR approach. Conclusion: These results suggest that GABA receptor signaling pathway was associated with the increased susceptibility to TD in Korean schizophrenic patients.
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