Author of

• 10801

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  P1.11 - Poster Session 1 - NSCLC Novel Therapies (ID 208)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track: Medical Oncology
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/28/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 10839

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    P1.11-039 - A randomized phase II trial of celecoxib combined with platinum-based chemotherapy as first-line and with icotinib as second-line treatment for advanced non-small cell lung cancer (ID 2820)

    09:30 - 09:30  |  Author(s): A. Gu
    • Abstract

    Background
    To evaluate the anti-tumor effect and safety of COX-2 inhibitors through a randomized controlled study by treating advanced non-small cell lung caner (NSCLC) with celecoxib + platinum-based chemotherapy as first-line treatment and celecoxib + icotinib as second-line treatment; to investigate the mechanism of action and efficacy predictors related to COX-2 inhibitors by detecting and monitoring serum VEGF, MMP-9 and E-cardrin in the course of treatment.

    Methods
    81 untreated patients with stage III-IV NSCLC were randomized into vinorelbine/cisplatin + celecoxib group and vinorelbine/cisplatin chemotherapy group. If disease progression was found in the followed-up visits in the middle or after the end of the 4[th] cycle, the patients would enter second-line icotinib + continued celecoxib group, while the mono-chemotherapy group became the second-line icotinib monotherapy group until the disease progressed. The patients’ serum VEGF, MMP-9 and E-cardrin were detected by ELISA assay at different time points before initial chemotherapy and after chemotherapy.

    Results
    First-line treatment and second-line celecoxib group showed significant differences in disease control rate (73.2% vs. 65.0%, P=0.036; 56.5% vs. 55.6%, p=0.078). PFS in the second-line celecoxib group was superior to that in the monotherapy group (5.3m vs. 5.0m, p=0.045). One case in the celecoxib group during second-line treatment experienced arrhythmia after continuous use of celecoxib, while the treatment was well tolerated in the other patients. After chemotherapy, serum VEGF, MMP-9 and E-cardrin were decreased, the decline in serum VEGF in the experimental group was significantly greater than that in the control group (p=0.027). Serum VEGF, MMP-9 and E-cardrin in the experimental group after chemotherapy were significantly lower than before chemotherapy (respectively: p=0.025, 0.035, 0.002). The efficacy of chemotherapy in patients with lower baseline serum VEGF and E-cardrin levels in the experimental group was better (p=0.033, 0.047). After chemotherapy, the efficacy of chemotherapy in patients with greater decline in VEGF and MMP-9 levels was better (p=0.038, 0.039). Only baseline serum VEGF was found to be related to the efficacy of chemotherapy in the control group (p=0.023). Baseline serum VEGF levels and the decline after chemotherapy were significantly associated with the patients’ PFS (p=0.019, 0.035).

    Conclusion
    COX-2 inhibitor celecoxib can improve disease control rate and be well tolerated by patients when combined with either chemotherapy for first-line treatment or targeted therapy for second-line treatment. Serum VEGF level is a good biomarker to predict efficacy and survivals, while serum MMP-9 and E-cardrin are potential biomarkers requiring large-sample studies.