CD34 and myelodysplastic syndrome: In addition, gene expression microarray analysis of primary BM CD34 + cells from 183 MDS patients and 17 healthy controls (GSE19429), and 55 MDS patients and 11 healthy controls (GSE4619), revealed elevated NCOA4 expression in the RA and RAEB1 subtypes of MDS compared to healthy controls (Fig S10 A).