FOXM1 and cancer: 22 Thiostrepton interacts directly with forkhead box M1 (FOXM1) and inhibits binding with genomic target sites.23 Thiostrepton also inhibits growth and induces apoptosis in human cancer cells by inhibiting FOXM1 expression.24 Based on CMap analysis, we identified thiostrepton as a candidate to be an anti‐CSC agent.