A number of tyrosine kinase inhibitors (TKIs) are now available for the treatment of various types of non-small cell lung cancers (NSCLC), including epidermal growth factor receptor (EGFR)-mutated and anaplastic lymphoma kinase (ALK)-rearranged NSCLC. However, amplification of the MET gene, which codes for the hepatocyte growth factor receptor (HGFR), has been found to be one of the most prominent mechanisms of secondary resistance to EGFR TKIs. Similarly, the MET exon 14 (METex14) mutation has also emerged as a potential tumour driver due to its role in cancer proliferation, and thus also a promising target for NSCLC.