Many signalling pathways have been implicated in such cancer cell migration and epithelial-to-mesenchymal transition (EMT) at the early stages of cancer cell dissemination [5,6], such as the TGFβ pathway, the poly(ADP-ribose) polymerase pathway, and the receptor tyrosine kinase (RTK) pathway [8]. The gene discussed is NTRK1; the disease is cancer.