CD34 and myelodysplastic syndrome: In the second cluster that we chose to highlight, multiple myelodysplastic syndrome (MDS) signatures from CD34+ cells (GSE4619, GSE19429) and ERBB2 overexpression signature from MCF10A cells (GSE14990) cluster together (Fig. 4c), suggesting that the up-regulation of ERBB2 may have a role in MDS.