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Interstitial chemotherapy with carmustine-loaded polymers for high-grade gliomas: a randomized double-blind study
S Valtonen1, U Timonen, P Toivanen
1Department of Neurosurgery, Turku University Central Hospital, Finland.
Neurosurgery
|July 1, 1997
Summary
Local carmustine (bischloroethyl-nitrosourea) in a biodegradable polymer improved survival for high-grade glioma patients. This treatment offers a promising option for extending life spans in malignant brain tumor cases.
Area of Science:
- Neuro-oncology
- Biomaterials Science
Background:
- Malignant gliomas (Grades III and IV) have a poor prognosis.
- Current treatments often have limited efficacy.
Purpose of the Study:
- To evaluate the efficacy of locally applied carmustine (bischloroethyl-nitrosourea) in a biodegradable polymer for high-grade glioma treatment.
- To compare patient survival rates between active treatment and placebo groups.
Main Methods:
- Prospective, randomized, double-blind study comparing carmustine-polymer implant to placebo.
- 32 patients with high-grade gliomas were enrolled.
- Median survival time post-operation was the primary outcome measure.
Main Results:
- The active treatment group had a median survival of 58.1 weeks versus 39.9 weeks for the placebo group (P=0.012).
- For Grade IV tumors, median survival was 53.3 weeks for active treatment vs. 39.9 weeks for placebo (P=0.008).
- Five of six surviving patients received active treatment.
Conclusions:
- Local application of carmustine in a biodegradable polymer appears to improve survival in high-grade glioma patients.
- This localized drug delivery method shows potential as an effective adjuvant therapy.