Abstract
Background
Irinotecan and cisplatin are one of active regimens for patients with extensive-stage small cell lung cancer (SCLC). To determine the efficacy and toxicity of irinotecan and cisplatin with concurrent split-course thoracic radiotherapy in limited-disease (LD) SCLC, we conducted a phase II study.
Patients and methods
Thirty-four patients fulfilling the following eligibility criteria were enrolled: chemotherapy-naïve, good performance status (PS 0–1), age ≤75, LD-SCLC, and adequate organ function. The patients received irinotecan 40 mg/m2 i.v. on days 1, 8, and 15, and cisplatin 60 mg/m2 i.v. on day 1. Four cycles of chemotherapy were repeated every 4 weeks. Split-course thoracic radiotherapy of once-daily 2 Gy/day commenced on day 2 of each chemotherapy cycle, with 26 and 24 Gy administered in the first and second cycles, respectively.
Results
Thirty-four patients were eligible and assessable for response, toxicity, and survival. Patients’ characteristics were as follows: male/female = 29/5; PS 0/1 = 18/16; median age (range) = 67 (50–73); and stage IB/IIA/IIB/IIIA/IIIB = 2/2/3/16/11. The overall response was 100 % (CR 8, PR 26). Grade 4 leukopenia, neutropenia, grade 3–5 pneumonitis, diarrhea, and esophagitis occurred in 24, 38, 6, 3, and 0 %, respectively. There were 2 treatment-related deaths from pneumonitis. The median time to tumor progression was 14.3 months. The median overall survival time and the 2- and 5-year survival rates were 44.5 months, 66.7 and 46.1 %, respectively. No tumor progression was observed in patients with CR.
Conclusion
Irinotecan plus cisplatin with concurrent split-course thoracic radiotherapy was effective and tolerable in untreated LD-SCLC.
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Fukuda, M., Nakamura, Y., Kinoshita, A. et al. Phase II study of irinotecan and cisplatin with concurrent split-course radiotherapy in limited-disease small cell lung cancer. Cancer Chemother Pharmacol 70, 645–651 (2012). https://doi.org/10.1007/s00280-012-1952-5
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DOI: https://doi.org/10.1007/s00280-012-1952-5