We obtained complete GWAS results in the form of summary statistics from the PD International Parkinson’s Disease Genetics Consortium (IPDGC) and AD Alzheimer’s Disease Genetics Consortium (ADGC). The PD GWAS summary statistic results from IPDGC consisted of 5,333 cases and 12,019 controls obtained from 5 studies with genotyped and imputed data at 7,689,524 SNPs (Table 1a, for additional details see reference 11). The AD GWAS summary statistic data from ADGC consisted of 11,840 cases and 10,931 controls obtained from 15 studies with genotyped and imputed data at 2,324,889 SNPs (Table 1a, for additional details see reference 12). The ADGC GWAS summary statistic data were co-varied for age, sex and number of APOE alleles. There was no overlap between the ADGC and the IPDGC cases/controls.
