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  • Title: Pemetrexed-carboplatin adjuvant chemotherapy with or without gefitinib in resected stage IIIA-N2 non-small cell lung cancer harbouring EGFR mutations: a randomized, phase II study.
    Author: Li N, Ou W, Ye X, Sun HB, Zhang L, Fang Q, Zhang SL, Wang BX, Wang SY.
    Journal: Ann Surg Oncol; 2014 Jun; 21(6):2091-6. PubMed ID: 24585406.
    Abstract:
    BACKGROUND: Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) show great efficacy in patients with advanced non-small cell lung cancer (NSCLC) with EGFR mutations. The efficacy and safety of gefitinib following adjuvant chemotherapy in patients with EGFR mutation are unknown. METHODS: In this open-label, phase II study, patients with resected stage IIIA-N2 NSCLC harbouring EGFR mutations (either exon 19 deletion or L858R point mutation) were assigned randomly to receive pemetrexed (500 mg/m(2)) and carboplatin (AUC = 5), administered every 21 days for 4 cycles, followed with or without gefitinib (250 mg/day) for 6 months. The primary end point was disease-free survival (DFS). RESULTS: From August 2008 to September 2011, 60 patients were included in our center. DFS was significantly longer among those who received pemetrexed and carboplatin (PC)-gefitinib than among those who received PC alone [hazard ratio (HR), 0.37; 95 % confidence interval (CI) 0.16-0.85; P = 0.014; median, 39.8 vs. 27.0 months]. The rates of 2-year DFS were 78.9 % in the PC-gefitinib group and 54.2 % in the PC alone group. The rates of 2-year overall survival (OS) were 92.4 % in the PC-gefitinib group and 77.4 % in the PC alone group (HR, 0.37; 95 % CI 0.12-1.11, P = 0.076). The most common adverse event was rash (43.3 %, 13/30) in the PC-gefitinib group and the administration of gefitinib following chemotherapy was well tolerated. CONCLUSIONS: The administration of gefitinib following PC adjuvant therapy shows significant improvement in DFS in patients with resected stage IIIA-N2 NSCLC harbouring EGFR mutations.
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