Notably, we identified one novel locus (10q23.33, index SNP: rs3121427, mapped gene: MARK2P9, Pmeta = 1.02 × 10–8) shared between AD and sleep duration and three novel loci (4q32.1, index SNP: rs11100203, mapped gene: C4orf45, Pmeta = 2.56 × 10–9; 6p22.3, index SNP: rs62402786, mapped gene: PRL, Pmeta = 7.99 × 10–9; and 1p31.3, index SNP: rs7514002, mapped gene: PATJ, Pmeta = 8.92 × 10–9) shared between AD and snoring. Here, MARK2P9 is linked to Alzheimer disease.