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  • Title: Phase II study of consolidation paclitaxel after concurrent chemoradiation in poor-risk stage III non-small-cell lung cancer: SWOG S9712.
    Author: Davies AM, Chansky K, Lau DH, Leigh BR, Gaspar LE, Weiss GR, Wozniak AJ, Crowley JJ, Gandara DR, SWOG S9712.
    Journal: J Clin Oncol; 2006 Nov 20; 24(33):5242-6. PubMed ID: 17114656.
    Abstract:
    PURPOSE: A previous Southwest Oncology Group (SWOG) study (S9429) demonstrated efficacy and tolerability of concurrent chemoradiotherapy in poor-risk stage III non-small-cell lung cancer (NSCLC). This study evaluated adding consolidation paclitaxel after chemoradiotherapy for a similar patient cohort. PATIENTS AND METHODS: Patients with histologically/cytologically determined stage III NSCLC were eligible based on performance status (PS) 2 and either low albumin or weight loss more than 10%, poor pulmonary function, or comorbidities precluding cisplatin use. Treatment was carboplatin 200 mg/m2 days 1, 3, 29, and 31, and etoposide 50 mg/m2 days 1 through 4, and 29 to 32. Beginning day 1, thoracic radiation was delivered at 1.8 Gy in 25 fractions plus 16-Gy boost (total dose, 61 Gy). Patients without disease progression received paclitaxel 175 mg/m2 every 21 days for three cycles. RESULTS: Characteristics of 87 eligible patients were age 51 to 82 years; 57% PS 0 to 1, 43% PS 2; and 51% stage IIIA, 49% stage IIIB. Toxicities of concurrent chemoradiotherapy included grade 3 esophagitis (7%) and grade 3/4 neutropenia (43%). Fifty-four assessable patients received paclitaxel consolidation. Four treatment-related deaths occurred during chemoradiotherapy and four occurred during consolidation. Overall response rate was 53%. Median progression free- and overall survival were 6.1 and 10.2 months, respectively. One- and 2-year survival rates were 43% and 25%. CONCLUSION: Compared with a previous SWOG trial in a similar patient population, the addition of consolidation paclitaxel after chemoradiotherapy resulted in increased toxicity without a survival advantage. More PS 2 patients (43% v 18%) enrolled onto S9712, which may explain increased toxicity and lack of benefit. The optimal chemoradiotherapy approach for poor-risk patients remains to be defined.
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