The expression of markers of perivascular macrophages or bone marrow-derived cells (CD163,CCR2,CD34,CD59) correlated with Alzheimer’s disease severity, while we found no correlation with hematopoietic stem cell markers (KIT,MYB,ATXN1;Supplementary Table 2). This evidence concerns the gene CD59 and early-onset autosomal dominant Alzheimer disease.