The rs3129882/rs4248166 in HLA-DRA and rs34372695 in SYT11 are not associated with sporadic Parkinson's disease in Central Chinese population

Background: Parkinson's disease (PD) is a common progressive neurodegenerative disorder. Up to now, several single-nucleotide polymorphisms (SNPs) located in virulence gene sites have been reported linked to PD. Candidate gene association studies and genome-wide association studies have identified rs3129882, rs4248166 in HLA-DRA and rs34372695 in SYT11 as risk factors for familial or sporadic PD. However, the association between variants of HLA-DRA, SYT11 and PD are still controversial, especially in the Central Chinese population. We here performed a case-control study to investigate whether HLA-DRA and SYT11 genes could predispose to sporadic PD in the Chinese population. Methods: We investigate 486 PD patients and 457 age- and sex-matched controls from Central China to assess this association. Results: In the allele model, the odds ratio (OR) result of rs3129882 was 0.905 (p = 0.287). Moreover, no significant difference was observed in the association between rs424816 (OR = 0.864, p = 0.106) and rs34372695 (p = 1.0) with PD risk. Genotypic analysis in SNP rs3129882, rs4248166 and rs34372695 indicated no significant association with PD. Subgroup analysis of our data showed age-onset and gender were not associated with either genotype or minor allele frequencies of rs3129882 and rs4248166. Moreover, the negative results were also observed in a meta-analysis of studies of rs3129882 from mainland China and Taiwanese population. Conclusions: Our results reveal that rs3129882, rs4248166 and rs34372695 do not confer significant risks for sporadic PD in the Central Chinese population.