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Continuous epidermal growth factor receptor-tyrosine kinase inhibitor administration in primary lung adenocarcinoma patients harboring favorable mutations with controlled target lung tumors dose not hinder survival benefit despite small new lesions

Hsu PC  Chiu LC  Li SH  Chen CH  Wang CL  Kao KC  Chang JW  Wang CW  Yu CT  Chung FT  Yang CT  Liu CY  陳志弘  
【摘要】:BACKGROUND:In this study,we investigated the efficacy of continuous epidermal growth factor receptor(EGFR)tyrosine kinase inhibitors(TKIs)administration in lung adenocarcinoma patients harboring favorable mutations regarding the progressive disease(PD)status with appearance of indolent new lesions.METHODS:From June 2010 to October 2012,102 patients with lung adenocarcinoma,harboring favorable EGFR mutations and treated with EGFR-TKI were analyzed.Definite new lesions were detected during EGFR-TKI therapy,even though the primary target tumors were controlled.RESULTS:Of the 102 patients,57 continued and 45 discontinued EGFR-TKI therapy.The median overall survival was 529 days for the discontinuation group and 791 days for the continuation group(p=0.0197).Median survival time after the discontinuation of EGFR-TKI was 181 days and115 days in the discontinuation and continuation groups,respectively(p=0.1776),whereas median survival time after the appearance of indolent new lesions was 204 days and 262days,respectively(p=0.0237).CONCLUSION:Continuous EGFR-TKI administration in favorable EGFR-mutative lung adenocarcinoma patients with controlled primary tumors did not hinder the survival benefit,despite the appearance of new lesions.

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