We found eleven AD GWAS genes (ALCAM, APP, COX7C, EGFR, GPC6, MYO15A, PLCG2, RTN1, SEC61G, SORL1, and TMEM106B) to be differentially expressed between the ancestries in the iOPC cluster (Fig. 3A, Table 3). Here, RTN1 is linked to Alzheimer disease.