In the United States, approximately 17,000 people per year are diagnosed with brain

tumors, the leading cause of death from cancers in children ages 1-15 year (1,2). Gliomas

are the most prevalent type of brain tumors in adults, affecting 3.2/100,000 persons/yr in

the United States (www.CBTRUS.org). In spite of advances in surgery, chemotherapy,

and radiotherapy, the mean survival time of patients post-diagnosis remains approximately

9-12 months.