Assessment of Optune Therapy for Patients With Newly Diagnosed Glioblastoma Using Advanced MRI

Protocol Summary: Optune therapy is a newly approved treatment for patients with glioblastoma. This therapy demonstrated comparable outcomes for patients with recurrent GBM, in comparison to standard therapies, but better quality of life. More recently, in an interim analysis of 315 patients with GBM, adding Tumor Treating Fields (TTFields) to maintenance temozolomide chemotherapy significantly prolonged progression-free and overall survival. It also has demonstrated promise in other cancers such as pancreas, mesothelioma, ovarian and lung. However, in order to optimize the treatment regimen, and potentially predict which patients are most likely to respond, reliable ways of evaluation are necessary. Advanced perfusion and diffusion MRI methods have shown utility with other treatments such as bevacizumab. Preliminary data suggests the same might be true for the evaluation of Optune therapy. The team therefore proposes to determine the utility of these methods to predict response to Optune therapy. A successful result will have wide-ranging implications not only for the optimization of Optune treatment of brain cancer but also other cancers shown to benefit from this novel therapy.