Ketogenic Diet in Combination With Standard-of-care Radiation and Temozolomide for Patients With Glioblastoma

Enrolled subjects will be placed on a 16-week ketogenic diet (subject specific as prescribed by RD) while receiving standard of care cancer treatment (Radiation + Temozolomide). Study dietitians will create personalized meal plans for each patient with the goal of achieving and maintaining protocol defined metabolic ketosis. Subjects will be monitored for safety, nutrition, quality of life, and standard of care tumor assessments over the course of the study.