NTRK fusions approximatively occur in 0.1 to 1% of NSCLC cases and the NTRK genes are NTRK1, NTRK2, and NTRK3, located on chromosomes 1q23.1, 9q21.33 and 15q25.3 respectively. Here, NTRK1 is linked to non-small cell lung carcinoma.