• C J A Punt, M J A de Jonge, S Monfardini, G Daugaard, W Fiedler, B Baron, D Lacombe, P Fumoleau, and EORTC New Drug Development Group.
• Department of Medical Oncology, University Medical Center St. Radboud, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands. c.punt@onco.umcn.nl
• Eur. J. Cancer. 2004 Jun 1; 40 (9): 1332-4.

AbstractCamptothecins have shown efficacy in terms of response rate in patients with small cell lung cancer (SCLC). RFS2000 is a new camptothecin derivative, which has shown objective responses in various tumour types. The aim of this phase II study was to determine the objective response rate of RFS2000 in patients with sensitive and refractory SCLC. RFS2000 was given orally at 1.5 mg/m(2) per day for five consecutive days (five days on - two days off) on a continuous basis. Patients were evaluated weekly for toxicity and every six weeks for response. Thirty seven patients were included, 36 patients (14 with sensitive and 22 with refractory SCLC) were evaluable for toxicity, and 35 patients were evaluable for response. No objective responses were observed. Toxicity was acceptable, with myelosuppression, nausea/vomiting, and diarrhoea as the main toxicities. RFS2000 therefore has an acceptable toxicity profile but is not active as a single agent in SCLC.

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