In addition to MDA-MB-231 BM Luc+ cells, we previously demonstrated antagonist activity of PTH(7-33)-CBD and [W2]PTH(1-33)-CBD in SaOS-2 osteosarcoma cells, where [W2]PTH(1-33)-CBD showed superior efficacy in blocking PTHR1 signaling [13]. The gene discussed is PTH1R; the disease is osteosarcoma.