• L C Pronk, P Vasey, A Sparreboom, B Reigner, A S Planting, R J Gordon, B Osterwalder, J Verweij, and C Twelves.
• Rotterdam Cancer Institute (Daniel den Hoed Kliniek) and University Hospital, The Netherlands.
• Br. J. Cancer. 2000 Jul 1; 83 (1): 22-9.

AbstractCapecitabine and docetaxel are both active against a variety of solid tumours, while their toxicity profiles only partly overlap. This phase I study was performed to determine the maximum tolerated dose (MTD) and side-effects of the combination, and to establish whether there is any pharmacokinetic interaction between the two compounds. Thirty-three patients were treated with capecitabine administered orally twice daily on days 1-14, and docetaxel given as a 1 h intravenous infusion on day 1. Treatment was repeated every 3 weeks. The dose of capecitabine ranged from 825 to 1250 mg m(-2) twice a day and of docetaxel from 75 to 100 mg m(-2). The dose-limiting toxicity (DLT) was asthenia grade 2-3 at a dose of 1000 mg m(-2) bid of capecitabine combined with docetaxel 100 mg m(-2). Neutropenia grade 3-4 was common (68% of courses), but complicated by fever in only 2.4% of courses. Other non-haematological toxicities were mild to moderate. There was no pharmacokinetic interaction between the two drugs. Tumour responses included two complete responses and three partial responses. Capecitabine 825 mg m(-2) twice a day plus docetaxel 100 mg m(-2) was tolerable, as was capecitabine 1250 mg m(-2) twice a day plus docetaxel 75 mg m(-2).

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