As shown in Fig. 7a, b, the thiazole antibiotic Siomycin A, a known FOXM1 inhibitor in human cancer cells51–54, significantly inhibited colony-forming ability and induced apoptosis of MV4-11, THP-1, and NOMO-1 but not that of K-562, Kasumi-3, HL-60, and U-937 (Fig. 7a, b). Here, FOXM1 is linked to cancer.