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Ref Type Journal Article
PMID (25724526)
Authors Gainor JF, Tan DS, De Pas T, Solomon BJ, Ahmad A, Lazzari C, de Marinis F, Spitaleri G, Schultz K, Friboulet L, Yeap BY, Engelman JA, Shaw AT
Title Progression-Free and Overall Survival in ALK-Positive NSCLC Patients Treated with Sequential Crizotinib and Ceritinib.
Journal Vol Issue Date Pages Journal Short Title
Clinical cancer research : an official journal of the American Association for Cancer Research 21 12 2015 Jun 15 2745-52 Clin Cancer Res
URL
Abstract Text Anaplastic lymphoma kinase (ALK) rearrangements are important therapeutic targets in non-small cell lung cancer (NSCLC) that confer sensitivity to the ALK inhibitors crizotinib and ceritinib. To determine the outcome of sequential treatment with crizotinb and ceritinib, we retrospectively evaluated a cohort of ALK-positive patients treated with both agents.We identified 73 ALK-positive NSCLC patients treated with crizotinib followed by ceritinib at four institutions. Medical records were reviewed to determine overall survival (OS) and progression-free survival (PFS) on crizotinib and ceritinib.Among 73 ALK-positive patients, the median PFS (mPFS) on crizotinib was 8.2 months [95% confidence interval (CI), 7.4-10.6]. The median interval from crizotinib discontinuation to initiation of ceritinib was 25 days (range, 1-694). The mPFS on ceritinib was 7.8 months (6.5-9.1). Among 53 patients with no interval therapies between crizotinib and ceritinib, the mPFS on ceritinib was similar at 7.8 months (5.4-9.8). The median combined PFS for sequential treatment with crizotinib and ceritinib was 17.4 months (15.5-19.4). Among 23 patients who underwent post-crizotinib/pre-ceritinib biopsies, there was no difference in PFS on ceritinib between patients with or without ALK resistance mutations (mPFS 5.8 vs. 6.5 months, respectively; P = 0.510). In the overall study population, median OS was 49.4 months (35.5-63.1).Ceritinib has significant antitumor activity in ALK-positive NSCLC-even when crizotinib immediately precedes treatment with ceritinib (median combined PFS 17.0 months). Additional studies are necessary to further define the impact of specific ALK resistance mutations on duration of response to ceritinib.

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