A Phase I Study of Mebendazole for the Treatment of Pediatric Gliomas

Study Summary

This is a study to determine the safety and efficacy of the drug, mebendazole, when used in combination with standard chemotherapy drugs for the treatment of pediatric brain tumors. Mebendazole is a drug used to treat infections with intestinal parasites and has a long track record of safety in humans. Recently, it was discovered that mebendazole may be effective in treating cancer as well, in particular brain tumors. Studies using both cell cultures and mouse models demonstrated that mebendazole was effective in decreasing the growth of brain tumor cells. This study focuses on the treatment of a category of brain tumors called gliomas. Low-grade gliomas are tumors arising from the glial cells of the central nervous system and are characterized by slower, less aggressive growth than that of high-grade gliomas. Some low-grade gliomas have a more aggressive biology and an increased likelihood of resistance or recurrence. Low-grade gliomas are often able to be treated by observation alone if they receive a total surgical resection. However, tumors which are only partially resected and continue to grow or cause symptoms, or those which recur following total resection require additional treatment, such as chemotherapy. Due to their more aggressive nature, pilomyxoid astrocytomas, even when totally resected, will often be treated with chemotherapy. The current first-line treatment at our institution for these low-grade gliomas involves a three-drug chemotherapy regimen of vincristine, carboplatin, and temozolomide. However, based on our data from our own historical controls, over 50% of patients with pilomyxoid astrocytomas will continue to have disease progression while on this treatment. We believe that mebendazole in combination with vincristine, carboplatin, and temozolomide may provide an additional therapeutic benefit with increased progression-free and overall survival for low-grade glioma patients, particularly for those with pilomyxoid astrocytomas. High grade

Primary Outcome

Low-grade glioma patients will receive an assigned dose of mebendazole twice daily in combination with vincristine, carboplatin and temozolomide. During a 10 week induction period, patients will be assessed for dose-limiting toxicity that is beyond the expected toxicity from the standard regimen of vincristine, carboplatin, and temozolomide alone. This outcome measure will use a standard 3+3 design to dose-escalate mebendazole in three dose cohorts of 50 mg/kg/day, 100 mg/kg/day, and 200 mg/kg/d

Conditions Studied

Interventions

• DRUG Bevacizumab
• DRUG Carboplatin
• DRUG Temozolomide
• DRUG Vincristine
• DRUG Mebendazole

Study Locations (1)