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RATIONALE: Photodynamic therapy uses light and photosensitizing drugs to kill tumor cells and may be an effective treatment for refractory brain tumors.
PURPOSE: This phase I trial is studying the side effects and best dose of photodynamic therapy using porfimer sodium in treating patients with refractory brain tumors, including astrocytoma, ependymoma, and medulloblastoma.
- Determine the maximum tolerated dose of benzoporphyrin monoacid ring A in patients with refractory brain tumors undergoing cavitary photoillumination photodynamic therapy.
- Determine the effect of this regimen on neurotoxicity, clinical state, imaging changes, and survival of these patients.
OUTLINE: This is a dose-escalation study. Patients are stratified according to tumor location (posterior fossa tumors vs all other brain tumors).
Patients receive benzoporphyrin monoacid ring A (BPD-MA) IV preoperatively. Approximately 3 hours after BPD-MA administration, patients undergo craniotomy with photoillumination of the tumor. Patients with tumors greater than 2 cm in diameter also undergo gross tumor resection.
Cohorts of 3-6 patients receive escalating doses of BPD-MA until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose immediately preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity. Three additional patients are treated at the MTD.
Patients are followed at 4 and 6 weeks, every 3 months for 1 year, every 6 months for 1 year, and then annually thereafter.
PROJECTED ACCRUAL: A minimum of 24 patients will be accrued for this study within 3 years.
Primary Purpose: Treatment
Brain and Central Nervous System Tumors
verteporfin, conventional surgery
Medical College of Wisconsin Cancer Center
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-08-27T03:59:02-0400
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Ependymomas are childhood brain tumors that occur throughout the central nervous system, but are most common in the hindbrain, also known as the posterior fossa (PF). Current standard therapy comprise...
Neoplasms of the intracranial components of the central nervous system, including the cerebral hemispheres, basal ganglia, hypothalamus, thalamus, brain stem, and cerebellum. Brain neoplasms are subdivided into primary (originating from brain tissue) and secondary (i.e., metastatic) forms. Primary neoplasms are subdivided into benign and malignant forms. In general, brain tumors may also be classified by age of onset, histologic type, or presenting location in the brain.
A group of malignant tumors of the nervous system that feature primitive cells with elements of neuronal and/or glial differentiation. Use of this term is limited by some authors to central nervous system tumors and others include neoplasms of similar origin which arise extracranially (i.e., NEUROECTODERMAL TUMORS, PRIMITIVE, PERIPHERAL). This term is also occasionally used as a synonym for MEDULLOBLASTOMA. In general, these tumors arise in the first decade of life and tend to be highly malignant. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2059)
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