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Journal Article
Research Support, Non-U.S. Gov't
Characteristics, treatment patterns, and survival among ALK+ non-small cell lung cancer (NSCLC) patients treated with crizotinib: A chart review study.
OBJECTIVES: Second-generation ALK inhibitors are recently available for ALK+ non-small cell lung cancer (NSCLC) patients previously treated with crizotinib. This study described characteristics, treatment sequencing, and outcomes among locally advanced/metastatic crizotinib-experienced ALK+ NSCLC patients.
MATERIALS AND METHODS: From July 2014 to June 2015, a retrospective patient chart review was conducted among physicians from the US, EU, Korea, and Latin America. Participating clinicians identified their ALK+ NSCLC patients who received crizotinib and reported on their clinical characteristics, treatments, and survival using a pre-defined case report form. Kaplan-Meier analyses were used to describe overall survival (OS) and clinician-defined progression-free survival (PFS).
RESULTS: Participating clinicians reviewed charts of 158 ALK+ NSCLC patients treated with crizotinib during the study period. Crizotinib was most commonly received in the second-line setting (41% of patients), though this varied across geographical regions. Roughly half (53%) of the patients who discontinued crizotinib received further antineoplastic therapy; second-generation ALK inhibitors (44%) and chemotherapy (42%) regimens were used most frequently. Following crizotinib discontinuation, median OS was 8.2 months. Among patients who did not initiate a second-generation ALK inhibitor following crizotinib, median OS was 4.9 months; among those who did, median OS was not reached. Among patients who received chemotherapy immediately following crizotinib discontinuation, time to clinician-defined PFS from post-crizotinib chemotherapy initiation was 3.6 months.
CONCLUSION: Following crizotinib discontinuation, many patients received no further antineoplastic therapy, and OS was poor among patients who did not receive a second-generation ALK inhibitor. Recently available second-generation ALK inhibitors may provide important treatment options for ALK+ NSCLC patients.
MATERIALS AND METHODS: From July 2014 to June 2015, a retrospective patient chart review was conducted among physicians from the US, EU, Korea, and Latin America. Participating clinicians identified their ALK+ NSCLC patients who received crizotinib and reported on their clinical characteristics, treatments, and survival using a pre-defined case report form. Kaplan-Meier analyses were used to describe overall survival (OS) and clinician-defined progression-free survival (PFS).
RESULTS: Participating clinicians reviewed charts of 158 ALK+ NSCLC patients treated with crizotinib during the study period. Crizotinib was most commonly received in the second-line setting (41% of patients), though this varied across geographical regions. Roughly half (53%) of the patients who discontinued crizotinib received further antineoplastic therapy; second-generation ALK inhibitors (44%) and chemotherapy (42%) regimens were used most frequently. Following crizotinib discontinuation, median OS was 8.2 months. Among patients who did not initiate a second-generation ALK inhibitor following crizotinib, median OS was 4.9 months; among those who did, median OS was not reached. Among patients who received chemotherapy immediately following crizotinib discontinuation, time to clinician-defined PFS from post-crizotinib chemotherapy initiation was 3.6 months.
CONCLUSION: Following crizotinib discontinuation, many patients received no further antineoplastic therapy, and OS was poor among patients who did not receive a second-generation ALK inhibitor. Recently available second-generation ALK inhibitors may provide important treatment options for ALK+ NSCLC patients.
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