Abstract
Milataxel is a novel taxane analog, with evidence of enhanced preclinical activity compared to paclitaxel and docetaxel, especially in cell lines that over express P-glycoprotein. Based on preclinical data that milataxel may be active in colorectal cancer (CRC), a phase II study was performed in patients with advanced previously treated CRC. Forty-four eligible patients were entered. Milataxel was administered intravenously every 3 weeks at the dose of 35 mg/m(2). No objective responses were noted, stable disease was seen in three patients. The median time to progression was 1.4 months (95% CI of 1.2-2.4 months). Three subjects developed neutropenic sepsis and two died. The most frequent grade 3/4 adverse events were neutropenia (57%), leukopenia (27%), dehydration (14%), neuropathy (16%), diarrhea (14%) and thrombocytopenia (14%). The pharmacokinetics of milataxel was assessed in five subjects. The mean milataxel elimination half-life was 64 h and the mean area under the plasma concentration-time curve was 1,708 ng h/ml. A syndrome of neutropenic sepsis and diarrhea can be life threatening and close surveillance is needed in patients treated with milataxel at the dose of 35 mg/m(2) every 3 weeks. Clinical activity was not demonstrated in patients with advanced previously treated CRC.
Published Version
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