CTNI-51. FEASIBILITY AND SAFETY OF NEUROSURGICAL RESECTION AND INTRA-OPERATIVE RADIATION THERAPY USING THE XOFT AXXENT ELECTRONIC BRACHYTHERAPY SYSTEM AND BEVACIZUMAB IN RECURRENT GLIOBLASTOMA

Naveed Wagle, Pacific Neuroscience Institute, Santa Monica, California, USA; Department of Translational Neurosciences, Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, California, USAFollow
Garni Barkhoudarian, Saint John's Cancer Institute, Providence Saint John's Health Center, Santa Monica, California, USA.Follow
Lisa Chaiken, Pacific Neuroscience Institute, John Wayne Cancer Institute, Providence Saint John's Health Center, Santa Monica, CaliforniaFollow
Robert Wollman, Department of Radiation Oncology, Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Akanksha Sharma, Department of Translational Neurosciences, Pacific Neuroscience Institute at Saint John Cancer Institute, Santa Monica, CA, USAFollow
Jose Carrillo, Pacific Neuroscience Institute, Santa Monica, California, USA; Department of Translational Neurosciences, Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, California, USAFollow
Minhdan Nguyen, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Judy D Truong, Department of Translational Neurosciences and Neurotherapeutics, Pacific Neuroscience Institute, John Wayne Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA, USAFollow
Jared Chow, Providence Saint John Cancer Institute, Santa Monica, CA, USAFollow
Emma Chacon, Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA 90404, USA.Follow
Santosh Kesari, Department of Translational Neurosciences and Neurotherapeutics, John Wayne Cancer Institute/Pacific Neuroscience Institute, 2200 Santa Monica Boulevard, Santa Monica, CA, 90404, USAFollow

Document Type

Article

Publication Date

11-2022

Publication Title

Neuro-Oncology

Keywords

california; sjci

Abstract

Glioblastoma (GBM) is the most common and aggressive primary brain tumor. External beam radiation therapy (EBRT) is widely recognized as an effective treatment for primary GBM. EBRT applied after GBM resection is associated with an increase in overall survival. Beyond upfront therapy with radiation and temozolomide chemotherapy, there is no standard therapy that has been proven effective. Re-irradiation with ERBT is minimally effective and with significant comorbidities. Our study uses IORT at the time of re-resection in patients who have recurrent, operable GBM after failure of who received primary EBRT and temozolamide in their first course of treatment. IORT allows the delivery of a large effective radiation dose applied directly to the tumor bed at the time of resection. This affords direct radiation to be delivered to the micro- and macroscopic tumor remnants in the vicinity of the resection cavity immediately following gross resection. In contrast, the more distant, surrounding brain tissue does not receive high radiation exposure. This Phase II study continues to accrue subjects with the primary endpoint of overall survival and several secondary endpoints that includes progression free survival, quality of life, and adverse events/safety. To date, five patients have been treated on this protocol. The technical feasibility and safety of administering intraoperative radiation with the Xoft System has been established in this cohort. Preliminary GLIOX Trial findings demonstrate the safety and feasibility of using the Xoft Axxent® Electronic Brachytherapy System to administer intracranial radiation during resection of recurrent glioblastomas. We will report new and expansive study results to include these early findings.

Clinical Institute

Neurosciences (Brain & Spine)

Clinical Institute

Cancer

Department

Neurosciences

Department

Oncology

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