Rare SV2C coding variants in Parkinson's disease risk.

Genome-wide association studies have identified SV2C as a Parkinson's disease (PD) risk locus, with a common missense variant p.Asp543Asn in the synaptic vesicle glycoprotein 2C (SV2C) protein significantly associated with PD. We examined if other rare SV2C variants also influence PD risk. We analyzed sequencing data of 9810 East Asian individuals comprising 4298 patients and 5512 controls and identified 55 rare nonsynonymous variants. There was no significant association of rare nonsynonymous or loss-of-function variants with PD. Our findings show that besides p.Asp543Asn, other rare coding variants in SV2C do not play a major role in PD susceptibility in East Asia.