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Clinical studies with misonidazole.

C R Wiltshire, P Workman, J V Watson

    The British Journal of Cancer. Supplement
    |June 1, 1978
    PubMed
    Summary
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    This study explores misonidazole in radiotherapy for high-grade cerebral astrocytoma. It details plasma and tumor concentrations, crucial for understanding drug efficacy in brain tumor treatment.

    Area of Science:

    • Neuro-oncology
    • Radiation Oncology
    • Pharmacokinetics

    Background:

    • Cerebral astrocytomas (Grades 3 and 4) are aggressive brain tumors.
    • Radiotherapy is a standard treatment, but efficacy can be limited.
    • Misonidazole is an investigational radiosensitizer.

    Purpose of the Study:

    • To describe preliminary findings of a randomized clinical trial involving misonidazole.
    • To report plasma and tumor concentrations of misonidazole and its metabolite.
    • To evaluate misonidazole's pharmacokinetic profile in patients with brain tumors and other cancers.

    Main Methods:

    • Randomized clinical trial design.
    • High-performance liquid chromatography (HPLC) for drug analysis.
    • Measurement of plasma and tumor misonidazole concentrations in patients.

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    Main Results:

    • Preliminary data from a randomized trial of misonidazole for cerebral astrocytoma.
    • Plasma concentrations of misonidazole and its O-demethylated metabolite were determined.
    • Tumor concentrations were also reported for one patient with breast cancer.

    Conclusions:

    • Misonidazole is being investigated as a radiosensitizer for high-grade astrocytoma.
    • Pharmacokinetic data on misonidazole and its metabolite are presented.
    • Further research is needed to establish misonidazole's role in radiotherapy.