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Background: The data of sequential therapy of anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitors (TKIs) in clinical practice have been limited., Methods: We reviewed the clinical data of patients with ALK-rearranged non-small cell lung cancer who received crizotinib (CRZ) or alectinib (ALEC) between May 2012 and December 2016. Patients were divided into two groups based on the first-administered ALK-TKI, the CRZ or ALEC group. The combined time-to-treatment failure (TTF) was defined as the sum of the 'TTF of CRZ' plus the 'TTF of ALEC' if patients were treated with CRZ followed by ALEC in the CRZ group. The primary end-point is the comparison between the combined TTF and the TTF of ALEC in the ALEC group., Results: Of 864 patients enrolled from 61 institutions, 840 patients were analysed. There were 535 of 305 patients in the CRZ/ALEC groups. The combined TTF in the CRZ group was significantly longer than TTF in the ALEC group (median, 34.4 versus 27.2 months; hazard ratio [HR], 0.709; P = 0.0044). However, there was no significant difference in overall survival (OS) between the patients who received ALEC after CRZ in the CRZ group and the patients in the ALEC group (median, 88.4 months versus. not reached; HR, 1.048; P = 0.7770). In the whole population, the CRZ group had a significantly shorter OS than the ALEC group (median, 53.6 months versus not reached; HR, 1.821, P < 0.0001)., Conclusion: The combined TTF in the CRZ group was significantly longer than the TTF in the ALEC group; however, OS benefit of sequential therapy against ALEC as the first ALK-TKI was not shown., Competing Interests: Conflict of interest statement K.I. reported receiving personal fees from Boehringer Ingelheim, AstraZeneca, Pfizer, Eli Lilly, Chugai Pharmaceutical, Merck Sharp & Dohme (MSD), Ono Pharmaceutical and Taiho Pharmaceutical. T.Y. reported receiving grants from Takeda Pharmaceutical, Chugai Pharmaceutical, Boehringer Ingelheim, Taiho Pharmaceutical, Daiichi Sankyo, Ono Pharmaceutical, Bayer, Astellas and Eli Lilly and receiving personal fees from Takeda Pharmaceutical, Chugai Pharmaceutical, Boehringer Ingelheim, Taiho Pharmaceutical, Daiichi Sankyo, Bayer, Merck Serono, Pfizer, Huya Bioscience, Gilead Sciences and EP-CRSU. H.H. reported receiving grants from MSD, A2 Healthcare Corp., inVentiv Health Japan, Astellas, Daiichi Sankyo, Novartis, AbbVie, Quintiles/IQVIA Services, ICON Japan, Chugai Pharmaceutical, Takeda Pharmaceutical, EP-CRSU CO., GRITSTONE ONCOLOGY, Linical Co., Eli Lilly, Eisai Co., Bristol Myers Squibb company, Boehringer Ingelheim, Taiho Pharmaceutical, Pfizer, PAREXEL International Corp., SymBio Pharmaceuticals Limited, Ono Pharmaceutical, Merck Serono Co./Merck Biopharma, AstraZeneca, CMIC Shift Zero, Kissei Pharmaceutical, Kyowa Hakko Kirin, EPS Corporation, Bayer Yakuhin, Syneos Health, EPS International, Pfizer R&D Japan G.K and Otsuka Pharmaceutical and receiving personal fees from AstraZeneca, Boehringer Ingelheim, Bristol Myers Squibb, Chugai Pharmaceutical, Eli Lilly, Kyorin Pharmaceutical, MSD, Ono Pharmaceutical, Novartis, Pfizer, Shanghai Haihe Biopharm and Taiho Pharmaceutical. Y.H. reported receiving grants from Janssen Pharmaceutical, MSD and Ono Pharmaceutical and receiving personal fees from AstraZeneca, Boehringer Ingelheim, Chugai Pharmaceutical, Eli Lilly, MSD, Novartis, Ono Pharmaceutical and Taiho Pharmaceutical. K.N. reported receiving grants from Boehringer Ingelheim and receiving personal fees from Chugai Pharmaceutical, AstraZeneca, Boehringer Ingelheim, Eli Lilly, Novartis, Pfizer, Ono Pharmaceutical and Roche Diagnostics. H.K. reported receiving personal fees from Eli Lilly and Taiho Pharmaceutical. Y.O. reported no relevant conflicts of interests. T.Y. reported receiving personal fees from Boehringer Ingelheim, AstraZeneca, Taiho Pharmaceutical, Ono Pharmaceutical, Eli Lilly, Bristol Myers Squibb, Chugai Pharmaceutical, Novartis, Pfizer and MSD. T.S. reported receiving grants from AstraZeneca, Chugai Pharmaceutical, Daiichi Sankyo, Eli Lilly, MSD, Boehringer Ingelheim, Novartis, Pfizer, Takeda Pharmaceutical, AbbVie, Bayer Yakuhin, Kissei Pharmaceutical, LOXO Oncology and Merck Serono and receiving personal fees from AstraZeneca, Chugai Pharmaceutical, Daiichi Sankyo, Eli Lilly, MSD, Boehringer Ingelheim, Novartis, Pfizer, Takeda Pharmaceutical, Astellas, Bristol Myers Squibb, Kyowa Hakko Kirin, Ono Pharmaceutical, Taiho Pharmaceutical, Thermo Fisher Scientific and Precision Medicine Asia Co. Ltd. K.A. reported receiving personal fees from Chugai Pharmaceutical, AstraZeneca, MSD, Bristol Myers Squibb and Ono Pharmaceutical. T.F. reported receiving personal fees from AstraZeneca, Boehringer Ingelheim, Chugai Pharmaceutical, MSD, Novartis, Ono Pharmaceutical, Pfizer and Taiho Pharmaceutical. T.K. reported receiving grants from Chugai Pharmaceutical, AstraZeneca, Eli Lilly, Taiho Pharmaceutical, Bristol Meyers Squibb and Merck Biopharma and receiving personal fees from Chugai Pharmaceutical, AstraZeneca, Eli Lilly, Taiho Pharmaceutical, Bristol Meyers Squibb, Ono Pharmaceutical, MSD, Pfizer, Kyowa Hakko Kirin, Boehringer Ingelheim, Nippon Kayaku and Novartis. A.N. reported receiving personal fees from MSD, Chugai Pharmaceutical, AstraZeneca, Eli Lilly, Taiho Pharmaceutical, Boehringer Ingelheim and Kyowa Kirin. K.T. reported receiving grants from Boehringer Ingelheim, Chugai Pharmaceutical and Ono Pharmaceutical and receiving personal fees from Eli Lilly, Boehringer Ingelheim, Chugai Pharmaceutical, Ono Pharmaceutical, Taiho Pharmaceutical, AbbVie, Pfizer, SRL, MSD, Novartis and Kyowa Kirin. K.H. reported receiving personal fees from AstraZeneca, Eli Lilly, Boehringer Ingelheim, Ono Pharmaceutical, Chugai Pharmaceutical, Pfizer and Taiho Pharmaceutical. T.Y. reported receiving grants from Ono Pharmaceutical and receiving personal fees from AstraZeneca, Chugai Pharmaceutical, Ono Pharmaceutical, Bristol Myers Squibb, MSD and Boehringer Ingelheim. H.D. reported receiving grants from Chugai Pharmaceutical, Pfizer and Eli Lilly and receiving personal fees from Chugai Pharmaceutical and Boehringer Ingelheim. S.S. reported no relevant conflicts of interests. D.F. reported receiving grants from AstraZeneca and Chugai Pharmaceutical and receiving personal fees from AstraZeneca, Ono Pharmaceutical, Bristol Myers Squibb, Taiho Pharmaceutical, Chugai Pharmaceutical, MSD, Boehringer Ingelheim, Eli Lilly and Novartis. M.M. reported receiving personal fees from AstraZeneca, MSD, Ono Pharmaceutical, Eli Lilly, Boehringer Ingelheim, Chugai Pharmaceutical, Shionogi, Taiho Pharmaceutical and Novartis. K.M. reported receiving grants from Boehringer Ingelheim and Eli Lilly and receiving personal fees from Chugai Pharmaceutical and Novartis. T.A. reported no relevant conflicts of interests. A.T. reported no relevant conflicts of interests. S.M. reported receiving personal fees from Chugai Pharmaceutical, Boehringer Ingelheim, MSD, Eli Lilly, AstraZeneca, Ono Pharmaceutical, Taiho Pharmaceutical, Novartis, Bristol Myers Squibb and Kyowa Hakko Kirin. S.W. reported receiving grants from Boehringer Ingelheim and receiving personal fees from Eli Lilly, Pfizer, Novartis Pharma, AstraZeneca, Chugai Pharma, Bristol Meyers Squibb, Boehringer Ingelheim, MSD, Ono Pharmaceutical, Daiichi Sankyo and Taiho Pharmaceutical. H.A. reported receiving grants from Chugai Pharmaceutical and receiving personal fees from Chugai Pharmaceutical, Pfizer and Novartis. O.H. reported receiving grants from GlaxoSmithKline, AstraZeneca, Novartis, Kyorin, Bayer Yakuhin, Boehringer Ingelheim and Daiichi Sankyo and receiving personal fees from GlaxoSmithKline, AstraZeneca, Novartis, Bayer Yakuhin and Boehringer Ingelheim. K.S. reported no relevant conflict of interests. S.H. reported no relevant conflict of interests. K.A. reported no relevant conflict of interests. A.B. reported receiving personal fees from Chugai Pharmaceutical, Pfizer and Novartis. A.K. reported receiving grants from the Japan Society for the Promotion of Science, Boehringer Ingelheim, Chugai Pharmaceutical, Lilly and Ono Pharmaceutical and receiving personal fees from Boehringer Ingelheim, Chugai Pharmaceutical, Lilly, Ono Pharmaceutical, Novartis, Taiho Pharmaceutical and Pfizer. M.O. reported no relevant conflict of interests. K.N. reported receiving grants from MSD, A2 Healthcare Corp., inVentiv Health Japan, Astellas, Daiichi Sankyo, Novartis, AbbVie, Quintiles/IQVIA Services, ICON Japan, Chugai Pharmaceutical, Takeda Pharmaceutical, EP-CRSU CO., GRITSTONE ONCOLOGY, Linical Co., Eli Lilly, Eisai Co., Bristol Myers Squibb company, Boehringer Ingelheim, Taiho Pharmaceutical, Pfizer, PAREXEL International Corp., SymBio Pharmaceuticals Limited, Ono Pharmaceutical, Merck Serono Co./Merck Biopharma, AstraZeneca, CMIC Shift Zero, Kissei Pharmaceutical, Kyowa Hakko Kirin, EPS Corporation, Bayer Yakuhin, Syneos Health, EPS International, Pfizer R&D Japan G.K and Otsuka Pharmaceutical; receiving personal fees from AstraZeneca, Nichi-Iko Pharmaceutical, Astellas, Takeda Pharmaceutical, MSD, Taiho Pharmaceutical, Ono Pharmaceutical, Bristol Myers Squibb company, Boehringer Ingelheim, Eli Lilly, Novartis, SymBio Pharmaceuticals Limited, Pfizer, Chugai Pharmaceutical, Clinical Trials Co., NANZANDO Co., MEDICUS SHUPPAN, Publishers Co., YODOSHA CO., Care Net, Nikkei Business Publications, Reno. Medical, Daiichi Sankyo, KYORIN Pharmaceutical, Thermo Fisher Scientific, Medical Review Co., YOMIURI TELECASTING CORPORATION, Roche Diagnostics, Nippon Kayaku Co., Bayer Yakuhin, Merck Biopharma Co., Medical Mobile Communications Co., AbbVie and 3H Clinical Trial Inc. and receiving consulting and advisor fees from Takeda Pharmaceutical, KYORIN Pharmaceutical, Ono Pharmaceutical, Pfizer and Eli Lilly. N.Y. reported receiving grants from Taiho Pharmaceutical, Chugai Pharmaceutical, Eli Lilly, Boehringer Ingelheim, Daiichi Sankyo, Ono Pharmaceutical, Astellas, MSD, Pfizer, Takeda, AstraZeneca, Terumo and Toppan and receiving personal fees from Chugai Pharmaceutical, Eli Lilly, MSD, AstraZeneca, Ono Pharmaceutical, Novartis, Pfizer and Boehringer Ingelheim., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

Background: MET-deregulated non-small cell lung cancer represents an urgent clinical need because of the lack of specific therapies. Although recent studies have suggested a potential role for crizotinib in patients harboring MET gene alterations, no conclusive data are currently available. Therefore, we designed the Co-MET study, a single-arm phase II study to assess the efficacy and safety of crizotinib in patients with advanced non-small cell lung cancers harboring MET gene alterations., Methods: Co-MET is an open-label, multi-center, single-arm, phase II trial to assess the safety and efficacy of oral crizotinib in patients with advanced non-small cell lung cancer harboring MET exon 14 skipping mutation (cohort 1) or a high MET gene copy number of ≥ 7 (cohort 2). We will identify MET gene alterations using RT-PCR and/or next-generation sequencing. Oral crizotinib 250 mg BID will be administered until disease progression or unacceptable toxicity. A radiology committee will review tumor scans according to the RECIST criteria. The primary endpoint is the objective response rate. Assuming a null hypothesis of 20% objective response rate and an alternative hypothesis of 50% objective response rate for cohort 1, and a one-sided alpha error of 0.05 and 80% power based on the exact binomial distribution, the required number of evaluable patients is 19. We set the exploratory sample size for cohort 2 at 10 patients., Discussion: The results of this study are expected to provide evidence regarding the usefulness of oral crizotinib for advanced MET exon 14 skipping mutation-positive or MET high gene copy number-positive non-small cell lung cancer., Trial Registration: This study was registered with the University Hospital Medical Information Network Clinical Trials Registry as UMIN000031623 on 3 March 2018.

Objective: Post-marketing surveillance (PMS) was performed in Japan to obtain information on the safety and efficacy of crizotinib., Methods: Target patients included almost all patients with anaplastic lymphoma kinase-positive non-small cell lung cancer who were administered crizotinib. The observation period was 52 weeks. In the present study, we focused on the treatment status and safety of crizotinib therapy and analyzed the real-world data obtained by this PMS (ClinicalTrials.gov: NCT01597258)., Results: The safety analysis set included 2028 Japanese patients, and more than half of the patients (56.4%) were nonsmokers. The incidence of adverse drug reactions (ADRs) was 91.6%, and common ADRs (incidence ≥15%) were nausea (32.2%), diarrhea (24.3%), photopsia (18.9%), vomiting (17.5%) and dysgeusia (16.8%). Many patients (623 patients) discontinued treatment of crizotinib because of adverse events within 12 weeks after therapy initiation, which tended to frequently occur in the following cases: (1) elderly, (2) body weight <40 kg, (3) body surface area <1.2 m2 (4) ECOG PS 2-4, (5) higher Brinkman index and (6) history of occupational/environmental exposure such as asbestos/pneumoconiosis. The proportions of patients remaining on crizotinib therapy were 68.2% for 3 months, 55.2% for 6 months and 36.1% for 12 months, with a median duration of 7.9 months. Multivariate analysis with a Cox proportional hazard model identified 10 statistically significant patient background factors influencing the duration of crizotinib therapy., Conclusions: No new safety concerns were observed in this PMS study. Our results provide useful information regarding the status of crizotinib therapy in the clinical setting., (© The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Introduction: The study objective was to determine the incidence and characteristics of drug-induced interstitial lung disease (ILD) associated with an orally available small-molecule tyrosine kinase inhibitor, crizotinib, in a real-world clinical setting., Methods: Post-marketing surveillance was performed in Japan to obtain information on the safety and efficacy of crizotinib. Target patients included all patients with anaplastic lymphoma kinase-positive NSCLC who received crizotinib during the enrollment period between May 2012 and December 2014. The observation period was 52 weeks. Expert analysis of the ILD incidence was performed by an ILD independent review committee composed of five medical specialists., Results: The safety analysis set included 2028 patients, and more than half of the patients (56.4%) were nonsmokers. The incidence of ILD associated with crizotinib therapy was 5.77%; and 3.45% patients showed grade 3 or greater. Pulmonary edema-like shadows with or without diffuse alveolar damage pattern were observed in crizotinib-associated ILD (incidence: 0.39%), but a causal relationship with the prognosis could not be identified. ILD developed within 4 weeks from initiation of crizotinib administration in 41.9% and within 8 weeks in 69.2% of the patients. Age 55 years or older, Eastern Cooperative Oncology Group performance status 2-4, smoking history, previous or concomitant ILD, and comorbid pleural effusion were statistically determined as significant risk factors for crizotinib-induced ILD., Conclusions: Crizotinib therapy should be applied to the NSCLC patients with any of above risk factors under a cautious monitoring for ILD occurrence, and clinicians should pay attention to the risks of severe ILD., (Copyright © 2018 International Association for the Study of Lung Cancer. Published by Elsevier Inc. All rights reserved.)