NTRK1 and lung carcinoma: The tyrosine kinase receptor DDR1, which regulates various cell functions such as migration, adhesion, proliferation, cytokine secretion, and ECM homeostasis/remodeling (reviewed in [6,7]), has been discussed as a possible new target for cancer treatment given that it is not only overexpressed in lung cancer [12] but also associated with poor prognosis in patients with NSCLC [5,16].