Background Despite optimum treatment with surgery, radiation therapy, and chemotherapy, most patients with malignant glioma have a poor prognosis. Malignant gliomas are vascular tumours that produce vascular endothelial growth factor (VEGF), which is an important mediator of angiogenesis. Preclinical data indicate that angiogenesis is essential for the proliferation and survival of malignant glioma cells, which suggests that inhibition of angiogenesis might be an effective therapeutic strategy. Anti-angiogenic therapies that target VEGF and the VEGF receptor (VEGFR) are effective adjuncts to the treatment of solid tumours. Normalisation of dilated and leaky tumour vasculature might also enable anti-angiogenic therapy to increase the efficacy of radiation therapy and cytotoxic chemotherapy.
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