As shown in Supplementary Fig. 2, comparable percentage of YFP+/leukemia cells were detected in BM cells from both recipient mice transplanted with MA9-Foxm1fl/fl or MA9-Foxm1-CKO cells, suggesting that loss of Foxm1 does not affect the homing ability of MA9-induced leukemia cells. Here, FOXM1 is linked to leukemia.