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  • Title: A genetic link between CXCR5 and IL2RA gene polymorphisms and susceptibility to multiple sclerosis.
    Author: Xia ZL, Qin QM, Zhao QY.
    Journal: Neurol Res; 2018 Dec; 40(12):1040-1047. PubMed ID: 30352019.
    Abstract:
    OBJECTIVES: Multiple sclerosis (MS) is a T-cell-mediated disease of the central nervous system that develops in individuals possessing a complex susceptibility trait. We explored relationship between gene polymorphisms in MS. METHODS: To identify the associations of CXCR5 and IL2RA gene polymorphisms with susceptibility to MS, we recruited 263 MS patients from the Han nationality and 138 from the Hui nationality as MS group and 284 healthy volunteers from the Han nationality and 156 from the Hui nationality as controls. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was employed to test gene polymorphisms of IL2RA (rs2104286 and rs12722489). Sequenom MassARRAY system was applied to analyze genotyping of CXCR5 (rs3922). RESULTS: The genotypes and allele frequency distributions at the loci of IL2RA rs2104286 and rs12722489 showed significant differences between the MS and control groups. The gene polymorphisms at the loci of IL2RA rs2104286 and rs12722489 may increase the onset risk of MS. IL2RA-rs2104286 showed a positive relationship with CXCR5-rs3922. The same relationship was also observed between IL2RA-rs12722489 and CXCR5-rs3922. The genotypes and allele frequencies of loci of rs2104286 and rs12722489 were significantly different in MS clinical subtypes and severity (EDSS score). Additionally, CAC and TGC haplotype at rs3922-rs12722489-rs2104286 may reduce the risk of MS, while CGT and TGT haplotypes increase the risk. CONCLUSION: The gene polymorphisms at the loci of IL2RA rs2104286 and rs12722489 are closely associated with susceptibility to MS in the Han and Hui nationalities.
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