However, inhibitors of MAPK (Mitogen activated protein kinase) (Figure 1), EGFR(Epidermal growth factor receptor), TGFβRI (Transforming growth factor receptor 1), and the CXCR4 (C-X-C chemokine receptor) (Figure S3) did not inhibit conditioned medium-induced cancer cell scattering. This evidence concerns the gene CXCR4 and cancer.