Recurrent GBM Treated With Neurosurgical Resection and IORT Using the Xoft Axxent eBx System and Bevacizumab

The rationale for IORT, as the sole radiation therapy following surgical resection of recurrent GBM is to expand upon the favorable preliminary results in feasibility, safety and efficacy outcomes obtained at the European Medical Center Study Group (EMC Study Group). The rationale to add Bevacizumab as a systemic treatment is to target radio-resistant and highly tumorigenic cancer stem cells as well as to benefit from its radioprotective effects, i.e. reducing risk of radiation necrosis. Lastly, using Bevacizumab as a systemic therapy will enable the comparison of the results to the historic control arm, the EBRT arm of RTOG 1205.