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Daily bibliographic review of the Neurosurgery Department. La Fe University Hospital. Valencia, Spain

A clinical trial of bevacizumab, temozolomide, and radiation for newly diagnosed glioblastoma

J Neurosurg 116:341–345, 2012.DOI: 10.3171/2011.9.JNS11656

The presence of angiogenesis is a hallmark of glioblastoma (GBM). Vascular endothelial growth factor (VEGF), which drives angiogenesis, provides an additional target for conventional therapy. The authors conducted a prospective clinical trial to test the effectiveness of bevacizumab, an inhibitor of VEGF, in newly diagnosed GBM.

Methods. From 2006 through 2010, 51 eligible patients with newly diagnosed GBM were treated with involvedfield radiation therapy and concomitant temozolomide (75 mg/m2 daily for 42 days) along with bevacizumab (10 mg/ kg every 2 weeks), starting 29 days after surgery. This was followed by 6 cycles of adjuvant temozolomide therapy (150 mg/m2 on Days 1–7 of a 28-day cycle) with bevacizumab administered at 10 mg/kg on Days 8 and 22 of each 28-day cycle.

Results. The 6- and 12-month progression-free survival (PFS) rates were 85.1% and 51%, respectively. The 12- and 24-month overall survival (OS) rates were 85.1% and 42.5%, respectively. Grade III/IV toxicities were noted in 10 patients (19.6%). No treatment-related deaths were observed. Asymptomatic intracranial bleeding was noted in 5 patients.

Conclusions. The addition of bevacizumab to conventional therapy in newly diagnosed GBM appears to improve both PFS and OS in patients with newly diagnosed GBM, with acceptable morbidity. A shift toward diffuse relapse was noted in a significant number of patients. Ongoing Phase III clinical trials will show the true benefit of this antiangiogenic approach.

Category: Clinical Trial, Oncology, Outcome

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