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Published in: BMC Psychiatry 1/2021

Open Access 01-12-2021 | Schizophrenia | Research

Association study between genetic variants and the risk of schizophrenia in the Chinese population based on GWAS-implicated 6p21.3–23.1 human genome region: a case-control study

Authors: Gangqin Li, Jie Dai, Hao Liu, Yushan Lin, Qiaoni Liu, Kaiyuan Zheng, Suyu Li, Siyu Chen, Yi Ye

Published in: BMC Psychiatry | Issue 1/2021

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Abstract

Background

Schizophrenia is a polygenic disease; however, the specific risk genetic variants of schizophrenia are still largely unknown. Single nucleotide polymorphism (SNP) is important genetic factor for the susceptibility of schizophrenia. Investigating individual candidate gene contributing to disease risk remains important.

Methods

In a case-control study, five SNPs located in 6p21.3-p23.1 including rs2021722 in human leukocyte antigen (HLA) locus and rs107822, rs383711, rs439205 and rs421446 within the upstream of microRNA-219a-1 were genotyped in 454 schizophrenia patients and 445 healthy controls to investigate the possible association between the loci and schizophrenia in a Han Chinese population.

Results

Our results showed significant associations between the rs2021722 and schizophrenia in allele (A vs. G: adjusted OR = 1.661, 95%CI = 1.196–2.308), co-dominant (AG vs. GG: OR = 1.760, 95%CI = 1.234–2.510) and dominant genetic model (AG + AA vs. GG: OR = 1.756, 95%CI = 1.237–2.492), respectively. Haplotype analysis showed that TGGT and CAAC were protective factor for schizophrenia compared with TAAC haplotype (OR = 0.324, 95% CI = 0.157–0.672; OR = 0.423, 95% CI = 0.199–0.900).

Conclusions

These findings indicate that rs2021722 in HLA locus might be involved in pathogenesis of schizophrenia and that genotypes AG and allele A of the locus are risk factors for schizophrenia in the Han Chinese population, confirming the association between immune system and schizophrenia.
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Metadata
Title
Association study between genetic variants and the risk of schizophrenia in the Chinese population based on GWAS-implicated 6p21.3–23.1 human genome region: a case-control study
Authors
Gangqin Li
Jie Dai
Hao Liu
Yushan Lin
Qiaoni Liu
Kaiyuan Zheng
Suyu Li
Siyu Chen
Yi Ye
Publication date
01-12-2021
Publisher
BioMed Central
Keyword
Schizophrenia
Published in
BMC Psychiatry / Issue 1/2021
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-021-03496-5

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