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Association of norepinephrine transporter gene polymorphisms in attention-deficit/hyperactivity disorder in Korean population

Authors
Oh, So-YoungKim, Yong-Ku
Issue Date
6-2월-2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
ADHD; SLC6A2; NET; Polymorphism
Citation
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY, v.73, pp.56 - 63
Indexed
SCIE
SCOPUS
Journal Title
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY
Volume
73
Start Page
56
End Page
63
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/84465
DOI
10.1016/j.pnpbp.2016.10.006
ISSN
0278-5846
Abstract
We investigated the association of three single nucleotide polymorphisms(SNP) of the norepinephrine transporter (NET) gene SLC6A2, T-182C (rs2242446), A-3081T (rs28386840), and G-1287A (rs5569) with the prevalence of attention-deficit/hyperactivity disorder (ADHD), its clinical severity, and other disease-related characteristics in a Korean population. The genotype, allele frequency and haplotype of 103 ADHD patients and 173 controls were analyzed for these three SNPs. All participants completed the Korean version of the ADHD Rating Scale (K-ARS). The ADHD group also completed the Korean Educational Development Institute-Wechsler Intelligence Scale for Children (KEDI-WISC) and the Continuous Performance Test (CPT) in a drug-naive state. The chi(2) test and logistic regression analysis revealed no significant differences in the genotype distribution or allele frequencies of each SNP between the ADHD group and the control. In the haplotype analysis, the most common T-A-G haplotype was related to an increased risk of ADHD in females (P = 0.002). There was no statistical significance between clinical features of ADHD and any specific allele of each SNP after multiple test correction except lower omission error in non-A girl carriers (GG type) of G-1287A (carrier 76.75 +/- 18.74, non-carrier 55.00 +/- 9.26, t = 3.026, P = 0.007, Bonferroni-corrected P = 0.042). Some values related A-3081 and G-1287A showed a trend approaching the significance level when analyzed separately by gender. Even though it was not statistically meaningful after multiple test correction, G allele might have some protective effect against development of ADHD symptoms and this finding was consistent with previous studies. (C) 2016 Elsevier Inc. All rights reserved.
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