FOXM1 and osteosarcoma: Kalinichenko et al. (2004) demonstrated that a p19ARF peptide containing nine D-Arg was sufficient for inhibition of both Foxm1 transcription and Foxm1-dependent growth of osteosarcoma cells, rendering the (D-Arg)9-p19ARF 26–44 peptide a potential FOXM1 inhibitor in tumorigenesis [70].