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Phase II trial of docetaxel (Taxotere) for untreated advanced colorectal carcinoma.

The antimicrotubule agent docetaxel (Taxotere), a semisynthetic taxoid, has demonstrated antitumor activity against colorectal cancer cell lines in vitro, and in murine tumor models. We sought to characterize its activity in a group of previously untreated patients with colorectal carcinoma. Eighteen previously untreated patients with advanced, measurable colorectal carcinoma were treated with a 60-min intravenous infusion of docetaxel with a dose of 100 mg/m2 administered every 21 days. Routine premedication with diphenhydramine was given. Patients were required to have normal organ function and a Karnofsky performance status (KPS) > or = 60%. No complete response (CR) or partial responses (PR) were observed. Median survival was 13 months, despite a median time to progression of only 1.3 months. Neutropenia was the most common dose-limiting toxicity, resulting in 5 episodes of febrile neutropenia requiring hospitalization and intravenous antibiotics. One patient experienced a grade 4 hypersensitivity reaction (HSR) requiring treatment termination. No toxic deaths occurred. Despite encouraging preclinical data, docetaxel is an inactive drug in advanced colorectal cancer when given in the dose and on the schedule examined in the present study, and has significant, although reversible, toxicities.