ALK and non-small cell lung carcinoma: In two NSCLC patients with ALK rearrangement, their disease was stable even after cessation of ALK-TKI, suggesting that ALK-TKI for ALK-rearranged NSCLC has more potential to suppress the disease for a longer time like immunotherapy in patients with advanced stage disease, and is effective at improving OS in the adjuvant setting than EGFR-TKI for EGFR-mutated NSCLC.