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Preliminary Findings on the Use of Targeted Therapy with Pazopanib and Other Agents in Combination with Sodium Phenylbutyrate in the Treatment of Glioblastoma Multiforme

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The most common and aggressive type of brain tumor is glioblastoma multiforme (GBM). The prognosis for GBM remains poor with a five-year survival rate between 1% and 2%. The prospects for patients with recurrent GBM (RGBM) are much worse, with the majority dying within 6 months. This publication provides a brief description of the treatment of 11 GBM patients treated with sodium phenylbutyrate (PB) in combination with pazopanib, m-TOR inhibitors, and other agents. The treatment was associated with tolerable side effects and resulted in objective responses in 54.5% of cases (complete response 18.2%, partial response 36.3%) and 27.3% cases of stable disease. The preferable treatment regimen consisted of PB, pazopanib, dasatinib, everolimus, and bevacizumab (BVZ). For various reasons not all patients were compliant with the treatment regimen. In patients who strictly complied with the treatment plan, all responded as CR or PR. Based on preliminary findings, the authors propose further phase I/II clinical trials with PB in combination with pazopanib, dasatinib, everolimus, and BVZ in patients with RGBM who failed standard surgery, radiation therapy and chemotherapy. With proper dose reductions, the treatment appears to be well-tolerated. Molecular profiling of patient subgroups with favorable genomic signatures may help to select patients for future studies.
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Burzynski, S. , Janicki, T. , Burzynski, G. and Brookman, S. (2014) Preliminary Findings on the Use of Targeted Therapy with Pazopanib and Other Agents in Combination with Sodium Phenylbutyrate in the Treatment of Glioblastoma Multiforme. Journal of Cancer Therapy, 5, 1423-1437. doi: 10.4236/jct.2014.514144. 
 

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