title: [Current status of targeted therapy for anaplastic lymphoma kinase in non-small cell lung cancer].
abstract: The rate of the anaplastic lymphoma kinase (ALK) gene rearrangements in non-small cell lung cancer (NSCLC) tissues is 3%-5%. The first-in-class ALK tyrosine kinase inhibitor, crizotinib, can effectively target these tumors represent a significant advance in the evolution of personalized medicine for NSCLC. A randomized phase III clinical trial in which superiority of crizotinib over chemotherapy was seen in previously treated ALK-positive NSCLC patients demonstrated durable responses and well tolerance in the majority of ALK-positive NSCLC patients treated with crizotinib. However, despite the initial responses, most patients develop acquired resistance to crizotinib. Several novel therapeutic approaches targeting ALK-positive NSCLC are currently under evaluation in clinical trials, including second-generation ALK inhibitors, such as LDK378, CH5424802 (RO5424802), and AP26113, and new agents shock protein 90 inhibitors. This review aims to present the current knowledge on this fusion gene, the treatment advances, and novel drug clinical trials in ALK rearranged NSCLC.
authors.affiliation: Department of Medical Oncology, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor  Research Institute, Beijing 101149, China.
authors.forename: Li
authors.initials: L
authors.lastname: Ma
authors.affiliation: Department of Medical Oncology, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor  Research Institute, Beijing 101149, China.
authors.forename: Shucai
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000077548:Anaplastic Lymphoma Kinase; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000201:enzymology*; D000077547:Crizotinib; D006801:Humans; D047428:Protein Kinase Inhibitors / Q000627:therapeutic use; D011720:Pyrazoles / Q000627:therapeutic use; D011725:Pyridines / Q000627:therapeutic use; D020794:Receptor Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors / Q000378:metabolism*
chemical_list: D047428:Protein Kinase Inhibitors; D011720:Pyrazoles; D011725:Pyridines; D000077547:Crizotinib; C000626173:ALK protein, human; D000077548:Anaplastic Lymphoma Kinase; D020794:Receptor Protein-Tyrosine Kinases