IRAG1 and Alzheimer disease: Multiple associations (GALNT18, CTR9, EIF4G2, ZBED5-AS1, LOC101928053, and MRVI1) specific to astrocyte and oligodendrocyte cell-types are coregulated in chromosome 11p15.4, and the strongest signal, GALNT18, has been connected to AD in more than one study [40, 41].