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  • Title: Cisplatin vs. carboplatin-based chemoradiotherapy in patients >65 years of age with stage III non-small cell lung cancer.
    Author: Ezer N, Smith CB, Galsky MD, Mhango G, Gu F, Gomez J, Strauss GM, Wisnivesky J.
    Journal: Radiother Oncol; 2014 Aug; 112(2):272-8. PubMed ID: 25150635.
    Abstract:
    BACKGROUND AND PURPOSE: Combined chemoradiotherapy (CRT) is considered the standard care for unresectable stage III non-small cell lung cancer (NSCLC). There have been limited data comparing outcomes of carboplatin vs. cisplatin-based CRT, particularly in elderly. MATERIAL AND METHODS: From the Surveillance, Epidemiology and End Results-Medicare registry, we identified 1878 patients >65 years of age with unresected stage III NSCLC that received concurrent CRT between 2002 and 2009. We fitted a propensity score model predicting use of cisplatin-based therapy and compared adjusted overall and lung-cancer specific survival of carboplatin- vs. cisplatin-treated patients. Rates of severe toxicity requiring hospital admission were compared in propensity score adjusted analyses. RESULTS: Overall 1552 (83%) received carboplatin (77% in combination with paclitaxel) and 17% cisplatin (67% in combination with etoposide). Adjusted cox models showed similar overall (hazard ratio [HR]: 0.98; 95% confidence interval [CI]: 0.86-1.12) and lung cancer-specific (HR: 0.99; 95% CI: 0.84-1.17) survival among patients treated with carboplatin vs. cisplatin. Adjusted rates of neutropenia (odds ratio [OR]: 0.35; 95% CI: 0.21-0.61), anemia (OR: 0.67; 95% CI: 0.51-0.89), and thrombocytopenia (OR: 0.51; 95% CI: 0.31-0.85) were lower among carboplatin-treated patients; other toxicities were not different between groups. CONCLUSION: Carboplatin-based CRT is associated with similar long-term survival but lower rates of toxicity. These findings suggest carboplatin may be the most appropriate chemotherapeutic agent for elderly stage III patients.
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