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- W2570843762 abstract "After failure of epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI), re-biopsy may be helpful to understand resistance mechanism and guide further treatment decision. However, re-biopsy is still challenging due to several hurdles, such as tissue availability, procedural feasibility, and limited new drugs. The aim of this study was to assess the feasibility of re-biopsy in advanced non-small cell lung cancer (NSCLC) in a real-practice. We retrospectively reviewed the clinical and pathologic data of advanced NSCLC patients who had disease progression after previous EGFR-TKI at single institution between January 2015 and February 2016. Ninety-one patients had disease progression after using EGFR-TKI. Among them, thirty-three patients (36.3%) underwent re-biopsy. Re-biopsy was successfully completed for thirty-two patients (97.0%) and only one patient didn’t get malignant cell. Three patients (9.1%) experienced a pneumothorax, however only one patient required closed thoracostomy. After re-biopsy, 27 patients were performed EGFR mutation test. Among 21 patients who had active mutation, the initial mutation was again found in 9 cases (42.9%) while the T790M mutation was found in 6 cases (28.6%). In 4 cases the initial EGFR mutation was no longer found. The patients who had re-biopsy were younger (61.2±9.7 vs. 66.1±10.8 years, p=0.03) and longer response duration (429±383 vs. 265±284 days, p=0.022) than the patients who didn’t. Re-biopsy in advanced NSCLC is feasible in the real practice especially in younger patient and patients with longer response duration of EGFR-TKI." @default.
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- W2570843762 date "2017-01-01" @default.
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- W2570843762 title "P3.02b-112 Feasibility of Re-Biopsy in Patients with Non-Small Cell Lung Cancer after Failure of Epidermal Growth Factor Receptor Targeted Therapy" @default.
- W2570843762 doi "https://doi.org/10.1016/j.jtho.2016.11.1780" @default.
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