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C. Chen



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    OA 16 - Treatment Strategies and Follow Up (ID 686)

    • Event: WCLC 2017
    • Type: Oral
    • Track: Early Stage NSCLC
    • Presentations: 1
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      OA 16.04 - Efficacy and Safety of Erlotinib vs Vinorelbine/Cisplatin as Adjuvant Therapy for Stage IIIA EGFR Mutant NSCLC Patients (ID 8717)

      15:00 - 15:10  |  Author(s): C. Chen

      • Abstract
      • Presentation
      • Slides

      Background:
      Adjuvant chemotherapy remains the most important treatment for stage IIIA non-small cell lung cancer (NSCLC) after radical operation, but its benefits has reached plateau and high risk of recurrence. Previous studies SELECT and RADIANT have suggested a trend of improving DFS of erlotinib as adjuvant therapy for patients with activating mutations. This study is designed as prospective, open-label, randomized, multicenter phase II trial to investigate the efficacy and safety of erlotinib (E) as adjuvant therapy in comparison with vinorelbine/cisplatin (NP) chemotherapy in completely resected stage IIIA EGFR mutant patients.

      Method:
      Patients aged between 18 – 75 with ECOG PS 0–1, stage IIIA, EGFR-activating mutation (exon 19 or exon 21 L858R), reached R0 resection NSCLC were eligible. And patients were randomized(1:1) into either erlotinib (orally 150mg/day for 2 years, util relapse or unacceptable toxicity) or NP (vinorelbine 25mg/m[2] i.v. day 1, 8 and cisplatin 75mg/m[2] i.v. day 1, every 3 weeks for 4 cycles) group. Random assignment was stratified by EGFR mutation type (exon 19 vs exon 21), histology (adenocarcinoma vs non- ) and smoking status (smoker vs non-). The primary endpoint was 2-year disease free survival rate (DFSR), secondary endpoints include disease free survival (DFS), overall survival (OS), safety (NCI CTCAE 4.0) and quality of life (QoL), and exploratory biomarker analysis.

      Result:
      From Sep, 2012 to May, 2015, in total 102 patients from 16 centers across China were randomized to receive E (N=51) or NP (N=51). Median follow-up time was 33 months for E and 28 months for NP. Baseline characteristics of age, sex, PS, histology, smoking status, EGFR mutation subtypes were well balanced in each arm. Two-year DFSR was 81.35% (95%CI: 69.63-93.08) in E arm and 44.62% (95%CI: 26.86-62.38) in NP arm respectively (P<0.001) in ITT population. DFS was significantly prolonged with E vs NP (median, 42.41 vs 20.96 months, HR 0.271, 95% CI: 0.137-0.535; P<0.001). OS data from our trial are still immature. In current, the number of death events were 2 (E) and 13 (NP) arm. Safety profile was similar to previous studies of each agent in NSCLC, no new unexpected AE were observed in each arms.

      Conclusion:
      As compared with NP, E showed superior efficacy and should be considered therapeutic option for patients with R0 resected stage IIIA NSCLC with EGFR-activating mutation. (EVAN, NCT01683175).

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