Assessment of RIT2 rs12456492 association with Parkinson's disease in Mainland China.

A recent meta-analysis of genome-wide association studies in Parkinson's disease (PD) has identified the rs12456492 variant in RIT2 as a new susceptibility loci. Because the characteristics of this locus in a Han Chinese population from mainland China was still unknown, we performed a case-control replication study in this population and investigated RIT2 rs12456492 variant in a large cohort of Chinese Han individuals. In total, 933 subjects comprising 460 PD patients and 473 control subjects were genotyped. We found a significant difference in the distributions of genotype and allele between PD and control groups (genotype p = 0.008, allele p = 0.007, odds ratio = 1.296, 95% confidence interval = 1.075-1.563). This study replicates the association between rs12456492 variant and risk of developing PD in a Han Chinese population.