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Sequential Use of Anaplastic Lymphoma Kinase Inhibitors in Japanese Patients With ALK-Rearranged Non-Small-Cell Lung Cancer: A Retrospective Analysis.
Clinical Lung Cancer 2017 July
BACKGROUND: Second-generation anaplastic lymphoma kinase (ALK) inhibitors, such as alectinib and ceritinib, have recently been approved for treatment of ALK-rearranged non-small-cell lung cancer (NSCLC). An optimal strategy for using 2 or more ALK inhibitors has not been established. We sought to investigate the clinical impact of sequential use of ALK inhibitors on these tumors in clinical practice.
PATIENTS AND METHODS: Patients with ALK-rearranged NSCLC treated from May 2010 to January 2016 at the National Cancer Center Hospital were identified, and their outcomes were evaluated retrospectively.
RESULTS: Fifty-nine patients with ALK-rearranged NSCLC had been treated and 37 cases were assessable. Twenty-six received crizotinib, 21 received alectinib, and 13 (35.1%) received crizotinib followed by alectinib. Response rates and median progression-free survival (PFS) on crizotinib and alectinib (after crizotinib failure) were 53.8% (95% confidence interval [CI], 26.7%-80.9%) and 38.4% (95% CI, 12.0%-64.9%), and 10.7 (95% CI, 5.3-14.7) months and 16.6 (95% CI, 2.9-not calculable), respectively. The median PFS of patients on sequential therapy was 35.2 months (95% CI, 12.7 months-not calculable). The 5-year survival rate of ALK-rearranged patients who received 2 sequential ALK inhibitors from diagnosis was 77.8% (95% CI, 36.5%-94.0%).
CONCLUSION: The combined PFS and 5-year survival rates in patients who received sequential ALK inhibitors were encouraging. Making full use of multiple ALK inhibitors might be important to prolonging survival in patients with ALK-rearranged NSCLC.
PATIENTS AND METHODS: Patients with ALK-rearranged NSCLC treated from May 2010 to January 2016 at the National Cancer Center Hospital were identified, and their outcomes were evaluated retrospectively.
RESULTS: Fifty-nine patients with ALK-rearranged NSCLC had been treated and 37 cases were assessable. Twenty-six received crizotinib, 21 received alectinib, and 13 (35.1%) received crizotinib followed by alectinib. Response rates and median progression-free survival (PFS) on crizotinib and alectinib (after crizotinib failure) were 53.8% (95% confidence interval [CI], 26.7%-80.9%) and 38.4% (95% CI, 12.0%-64.9%), and 10.7 (95% CI, 5.3-14.7) months and 16.6 (95% CI, 2.9-not calculable), respectively. The median PFS of patients on sequential therapy was 35.2 months (95% CI, 12.7 months-not calculable). The 5-year survival rate of ALK-rearranged patients who received 2 sequential ALK inhibitors from diagnosis was 77.8% (95% CI, 36.5%-94.0%).
CONCLUSION: The combined PFS and 5-year survival rates in patients who received sequential ALK inhibitors were encouraging. Making full use of multiple ALK inhibitors might be important to prolonging survival in patients with ALK-rearranged NSCLC.
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