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Gene interaction analysis of psoriasis in Chinese Han population
Qiongqiong Xu1,2,3,4,5, Xiaodong Zheng1,2,3,4,5, Yiwen Mao1,2,3,4,5
1Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Hefei, China.
Background/Aims:
Psoriasis is a chronic immune-mediated inflammatory skin disease characterized by excessive proliferation of keratinocytes. It has a strong genetic predisposition; gene-gene interactions are important genetic models for common diseases. In this study, we explore pair-wise interactions among SNPs contributing to psoriasis susceptibility.
Methods:
We first performed gene interactions with exome-sequencing, next, we analyzed gene interactions combining the exome sequencing data with the targeted sequencing data. After we sequenced HLA region, we analyzed gene interactions including HLA regions and non-HLA regions.
Results:
We found interactions between HLA regions were significant. We observed significant interactions between HLA-C*06:02 and rs118179173 (snp31443520; p = 8.21 × 10-20 , OR = 0.22) and between HLA-C*06:02 and HLA-B:AA67 (p = 1.22 × 10-12 , OR = 0.45).
Conclusion:
This study provides evidence that HLA is the most important susceptibility region on the risk of psoriasis and interactions that occur in this region are still significant.
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