In contrast, the engraftment of GFP+EpCAM+ cancer cells from MD/PD-SCCs gave rise to tumors with a variable percentage of GFP+EpCAM− cancer cells, and GFP+EpCAM− cancer cells from MD/PD-SCCs exclusively generated PD/S-SCCs (Fig. 1b). The gene discussed is EPCAM; the disease is Menkes disease.