ROS1 and non-small cell lung carcinoma: Non-small cell lungcancer (NSCLC) contributes to 80–85% of all lung cancer cases [1, 2, 3].Rearrangements in the genes encoding for anaplastic lymphoma kinase (ALK) andv-ros UR2 sarcoma virus oncogene homolog 1 (ROS1) are observed in 2–7% and1–2% of NSCLC samples, respectively [4, 5].