Analysis of the genotype of diacylglycerol kinase delta single-nucleotide polymorphisms in Parkinson disease in the Han Chinese population.

Numerous Single-Nucleotide Polymorphisms (SNPs) of the Diacylglycerol Kinase Delta (DGKD) isoform 1 gene have been associated with Parkinson Disease (PD) in the genome-wide association studies of Caucasian population. This association has not been proven in the Han Chinese PD patients. This study included 376 unrelated Han Chinese PD patients from West China and 273 unrelated healthy controls from the same region. Five SNPs (rs2971859, rs1550532, rs2305539, rs2034762, and rs2242102) were genotyped using the Sequenom iPLEX Assay technology. No significant differences were observed in genotype frequencies and in the Minor Allele Frequency (MAF) in the five SNPs between PD patients and controls, early-onset PD and controls, late-onset PD and controls, and between early-onset and late-onset PD patients. The present study is the first to report on the lack of association of DGKD SNPs with PD in the Han Chinese population. More related studies involving larger numbers of participants are necessary to confirm the present finding.