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  • Title: A phase I study of cranial radiation therapy with concomitant continuous infusion paclitaxel in children with brain tumors.
    Author: Liu L, Vapiwala N, Munoz LK, Winick NJ, Weitman S, Strauss LC, Frankel LS, Rosenthal DI.
    Journal: Med Pediatr Oncol; 2001 Oct; 37(4):390-2. PubMed ID: 11568904.
    Abstract:
    BACKGROUND: The prognosis of children with high-grade astrocytomas of the central nervous system is grim and has not been substantially improved by conventional chemoradiotherapy. We performed a multi-institutional phase I study to determine the toxicities and tolerance of concurrent external beam radiation of the brain and a unique dose-schedule of paclitaxel as a radiation sensitizer. PROCEDURE: Paclitaxel was delivered intravenously as a continuous 24 h/day, 7 days/week infusion during the entire 6-week course of fixed schedule standard radiation therapy. The dose of paclitaxel was escalated in patient cohorts in standard phase I design. RESULTS: Eleven patients (eight brain stem gliomas, one glioblastoma multiforme, and two gliomatosis cerebri) were treated. Dose-limiting toxicity was encountered in the two patients treated at 6 mg/(m(2)/24 h), both of whom developed severe obstipation requiring prolonged hospitalization. CONCLUSIONS: We have shown in this first study of its kind that paclitaxel can be administered safely to children as a 6-week continuous infusion concurrent with cranial irradiation. The maximally tolerated and recommended phase II dose is 4 mg/(m(2)/day). The benefits of taxanes as clinical radiation sensitizers for children with high-grade gliomas, if any, remain to be determined.
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