FOXM1 and breast carcinoma: NB compounds have been shown to harbor similar activities in breast cancer cells (IC50 values ~ 1 μM) [29] and, consistent with earlier observations, the 1,1-diarylethylene diamine methiodide salts NB-73 and NB-115 were more potent FOXM1 inhibitors and suppressors of HGSOC cell viability than the 1,1-diarylethylene monoamine methiodide NB-55 [29].