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  • Title: Upfront gefitinib/erlotinib treatment followed by concomitant radiotherapy for advanced lung cancer: a mono-institutional experience.
    Author: Chang CC, Chi KH, Kao SJ, Hsu PS, Tsang YW, Chang HJ, Yeh YW, Hsieh YS, Jiang JS.
    Journal: Lung Cancer; 2011 Aug; 73(2):189-94. PubMed ID: 21247653.
    Abstract:
    BACKGROUND: Upfront tyrosine kinase inhibitor (TKI) has proved effective for selective advanced lung cancer patients in Taiwan. We hypothesized that early integration of radiotherapy during TKI treatment would decrease the chance of drug resistance and prolong progression-free survival (PFS). METHODS: This study included 25 patients with stage IIIb or IV non-squamous cell, non-small cell lung cancer (NSqCLC) who responded to upfront TKI treatment. Multi-target radiotherapy was administered during the TKI treatment course. Tomotherapy comprising a hypofractionated schedule with a dose of 40-50 Gy in 16-20 fractions was used for individual metastatic lesions. RESULTS: The patients' median follow-up duration was 30 months (range, 9-62 months). Of the 23 patients who had stage IV disease, 9 had oligometastases (≤5 gross target volumes) and 14 were in the more advanced stages of the disease. Twelve patients received more than 1 cycle of radiotherapy (median, 3; range, 2-6) with TKI being the only systemic treatment before they were salvaged with chemotherapy. The overall response rate after radiotherapy was 84.0%, and the median PFS was 16 months. The 3-year overall survival rate was 62.5% (95% confidence interval [CI], 39.1-85.8%). Toxicities were generally tolerated but it is necessary to prevent radiation-induced pneumonitis. CONCLUSION: We showed that combined first-line TKI therapy and early multi-target radiotherapy are very effective in selected patients that respond to TKI, when the status of mutations in the epidermal growth factor receptor (EGFR) are not known before the treatment. Our data may aid expansion of the effectiveness of TKI treatment through radiotherapy in Asian patients with stage IV NSqCLC.
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