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). The gene discussed is CD34; the disease is early-onset autosomal dominant Alzheimer disease.