There were an estimated 22,000 new cases of brain cancers in 2015 in the United States, and 15,000 deaths (Howlader et al., 2014). Glioblastoma (WHO IV), and Anaplastic Astrocytoma (WHO III), are the most common brain cancers, respectively, representing over 70% of all malignant gliomas (ABTA, 2015).