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2006: Tang P; Roldan G; Brasher P M A; Fulton D; Roa W; Murtha A; Cairncross J G; Forsyth P A
A phase II study of carboplatin and chronic high-dose tamoxifen in patients with recurrent malignant glioma.
Journal of neuro-oncology 2006;78(3):311-6.
PURPOSE: To determine the response rate, time to disease progression, survival, and toxicity of intravenous carboplatin and chronic oral high-dose tamoxifen in patients with recurrent malignant gliomas. PATIENTS AND METHODS: Patients with histological confirmation of recurrent malignant gliomas were eligible for this multicenter phase II trial. Treatment consisted of 400 mg/m2 carboplatin intravenously every 4 weeks and oral high dose chronic tamoxifen (80 mg bid in women and 100 mg bid in men). RESULTS: Twenty seven patients met the eligibility criteria and were evaluable for response. The histological subtypes were: 16 (59%) glioblastoma multiforme (GBM), malignant astrocytoma (5 patients), malignant mixed glioma (5 patients), and glioblastoma/gliosarcoma (1 patient). Twenty-two patients (82%) had an ECOG performance status of 0 or 1. No complete responses were observed, 4 patients (15%) achieved a partial response, and 14 patients (52%) had stable disease. Median time to progression was 3.65 months (95%CI 2.56, 4.83). Median overall survival was 14.09 months (95%CI 7.06, 19.91). One patient with a recurrent GBM had a sustained partial response and is progression free 81 months since starting treatment. Another patient with mixed malignant oligoastrocytoma also had a prolonged partial response (lasting 63 months) and is alive 84 months after treatment for recurrence. The most frequently reported grade 3 or 4 toxicities were fatigue (19%), nausea (11%) and anorexia (11%). CONCLUSIONS: Carboplatin and high dose tamoxifen has similar response rates to other regimens for recurrent malignant gliomas and are probably equivalent to those found using tamoxifen as monotherapy. Long-lasting periods of disease free survival in some patients (particularly those with malignant mixed oligo astrocytomas) were found.

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