In addition, by analyzing five independently published gene expression data sets (GSE12417, GSE15434, GSE21261, GSE22845 and GSE37642), we found that the mRNA expression levels of KLF4 and DPYSL2 are positively correlated in primary AML cells (Fig. 3A, Supplementary Fig. S6). The gene discussed is DPYSL2; the disease is acute myeloid leukemia.