A Phase 2 Study of the Ketogenic Diet Vs Standard Anti-cancer Diet Guidance for Patients with Glioblastoma in Combination with Standard-of-care Treatment

Open to people ages 18 years and up

• Adults 18 years or older
• Newly diagnosed glioblastoma (Within 2 months of initial diagnosis by histopathology)
• Not started standard of care chemotherapy and/or radiation therapy for glioblastoma
• Karnofsky Performance Status (KPS) ≥ 70
• Ability to read, write and understand either English OR Spanish
• Written informed consent obtained from subject and ability for subject to comply with the requirements of the study.

• Patients with recurrent glioblastoma
• Genetic disorders that affect lipid metabolism. Including but not limited to pyruvate carboxylase deficiency, porphyria, primary carnitine deficiency, carnitine palmitoyltransferase I or II deficiency, carnitine translocase deficiency, beta-oxidation defects
• Inability to wean steroids below 8mg dexamethasone / day or equivalent
• Body Mass Index (BMI) < 21kg/m2, unless the site Principal Investigator deems safe
• Currently pregnant or nursing
• Patients receiving other experimental therapy Note: Off-label therapy use is permitted
• Comorbidities that in the opinion of the investigator limit the patient's ability to complete the study
• Food preferences incompatible with keto diet
• Using a pacemaker, implantable cardiac defibrillator, neurostimulator, cochlear implants (removable hearing aids permitted), or other electronic medical equipment, unless the site Principal Investigator deems safe
• Inability to participant in standard of care MRIs