Two SNAP-25 genetic variants in the binding site of multiple microRNAs and susceptibility of ADHD: A meta-analysis

Abstract The aim of this meta-analysis is to assess the associations between two most widely investigated polymorphisms (rs3746544 and rs1051312) in the 3′UTR of the SNAP-25 gene and susceptibility of ADHD. Two investigators selected related studies and assessed methodological quality independently....

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Bibliographic Details
Published in:Journal of psychiatric research 2016-10, Vol.81, p.56-62
Main Authors: Ye, Chuanzhong, Hu, Zhijian, Wu, Evan, Yang, Xiaolu, Buford, Ushimbra J, Guo, Zhihong, Saveanu, Radu V
Format: Article
Language:English
Subjects:
ADHD
Attention Deficit Disorder with Hyperactivity - genetics
Binding Sites - genetics
Databases, Bibliographic - statistics & numerical data
Genetic Predisposition to Disease - genetics
Genotype
Humans
microRNAs
MicroRNAs - metabolism
Polymorphism, Single Nucleotide - genetics
Psychiatry
rs1051312
rs3746544
SNP
Synaptosomal-Associated Protein 25 - genetics
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Summary:Abstract The aim of this meta-analysis is to assess the associations between two most widely investigated polymorphisms (rs3746544 and rs1051312) in the 3′UTR of the SNAP-25 gene and susceptibility of ADHD. Two investigators selected related studies and assessed methodological quality independently. Six studies were included in this meta-analysis for a total of 715 cases and 655 controls. There is no apparent association between rs3746544 polymorphisms and risk of ADHD. However, subgroup analysis based on ethnicity demonstrated a strong association between rs3746544 polymorphism and ADHD in the subset of Asian participants, but not among Caucasians. Compared to the T allele, the allele G was associated with a significantly decreased risk of developing ADHD in the Asian population (odds ratio (OR) = 0.70, 95% confidence interval (CI) = 0.52–0.95, p = 0.02). The association between the TT genotype and ADHD risk was also significantly increased as compared to G/T (OR = 1.56, 95% CI = 1.00–2.44, p = 0.05) and the dominant genetic model (GG + GT vs. TT: OR = 1.51, 95% CI = 1.07–2.13, p = 0.02). For the rs1051312 SNP, being homozygous for the minor allele (C/C) was associated with a 3.66 higher odds of ADHD as compared to cases homozygous for the major allele (T/T) (95% CI = 1.64–8.13, p = 0.001), and 3.57 higher odds as compared to heterozygous (C/T) carriers (95% CI = 2.01–12.90, p 
ISSN:0022-3956
1879-1379
DOI:10.1016/j.jpsychires.2016.06.007