The ADC9 sample set was genotyped by the Center for Applied Genomics at the Children’s Hospital of Philadelphia using the Illumina Infinium GSAMD-24v1-0_20011747_A1 BeadChip which captures genotype data on 700,078 genomic SNPs. The standard Alzheimer’s Disease Genetics Consortium (ADGC) quality control pipeline (Naj et al. 2011) was applied to this GWAS dataset.