This ethnicity- and sex-specific GWAS on PD in the Korean population suggests the pan-ethnic effect of SNCA, the standing out significance of PARK16 in East Asians, the East Asian-specific role of the LRRK2 G2385R variants, and the possible disproportionate effect of SNCA and PARK16 between sexes for PD susceptibility. The gene discussed is LRRK2; the disease is Parkinson disease.