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R. Pillai



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    ORAL 20 - Chemoradiotherapy (ID 124)

    • Event: WCLC 2015
    • Type: Oral Session
    • Track: Treatment of Locoregional Disease – NSCLC
    • Presentations: 1
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      ORAL20.01 - A Systematic Review of Carboplatin-Paclitaxel versus Cisplatin-Etoposide Concurrent with Thoracic Radiation for Stage III NSCLC Patients (ID 600)

      10:45 - 10:56  |  Author(s): R. Pillai

      • Abstract
      • Presentation
      • Slides

      Background:
      The two most commonly used chemotherapy regimens deployed concurrently with thoracic radiation (RT) for patients with unresectable IIIA and IIIB non-small cell lung cancer (NSCLC) are carboplatin/paclitaxel (CP) and cisplatin/etoposide (CE). Because there are no prospective comparisons of these two regimens in this setting, we conducted a systematic review of published trials to compare outcomes and toxicities between CE and CP.

      Methods:
      Studies which enrolled stage III patients receiving RT with CP or CE were identified using electronic databases (MEDLINE, EMBASE, and Cochrane library) and meeting abstracts. Trials were excluded if they were phase I, enrolled less than 10 pts, or included surgical resection. A systematic analysis of extracted data was performed using Comprehensive Meta Analysis (Version 2.2) software using random and fixed effect models. Clinical outcomes were compared using point estimates for weighted values of median overall survival (OS), progression free survival (PFS), response rate (RR) and toxicities. Two-tailed T-test with a significance level of 0.05 was used for all comparisons.

      Results:
      3194 patients were included from 32 studies in the CE arm, and 3789 patients from 51 studies in CP. Baseline characteristics of patients on the CE arm versus CP arm were: median age 61 vs. 63 years, male 67.6% vs. 78%, squamous histology 39% vs. 40%, and median radiation dose 62 Gy vs. 63 Gy. There was no significant difference in response rates between CE and CP (65% vs. 56%, p =0.6), respectively. There was no significant difference in median progression free survival (11.5m vs. 9.3m p =0.2), overall survival (19.8m vs. 18.4m, p=0.48), 1-year survival rate (66% vs. 65%, p=0.8), or 3-year survival rate (31% vs. 25%, p=0.4) for CE vs. CP. CE was associated with higher grade 3/4 hematological toxicities than CP, such as neutropenia (53% vs. 23% p<0.0001), thrombocytopenia (14% vs. 6% p=0.001), anemia (16% vs. 8% p=0.06), as well as grade 3/4 nausea/vomiting (20% vs. 9% p=0.018), while rates of grade 3/4 pneumonitis and esophagitis were similar.

      Conclusion:
      CE and CP regimens were associated with comparable efficacy when used with concurrent radiotherapy for stage III unresectable NSCLC pts. The toxicity profile favored the CP regimen.

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