GWS associations were obtained for several known AD risk loci, including ABCA7 (rs73505251, p = 3.26 × 10−10), TREM2 (rs73427293, p = 2.95 × 10−9), and CD2AP (rs7738720, p = 1.14 × 10−9). This evidence concerns the gene TREM2 and Alzheimer disease.