Clinical Research Directory

Inclusion Criteria: * Age ≥ 18 years with pathologic diagnosis of a supratentorial diffuse astrocytic or oligodendroglial tumor * Patients must be able to provide informed consent Exclusion Criteria: * A pre-existing seizure disorder or epilepsy syndrome prior to tumor diagnosis * Active maintenance therapy with an antiepileptic seizure drug (AED) prior to diagnosis of tumor * Patients who have experienced an epileptic seizure as the presenting symptom of their brain tumor * Predicted life expectancy of less than 6 months from the time of screening * Pregnancy * Patients with clinically significant hepatic disease (elevated aminotransferases \[bilirubin, alkaline phosphatase\] \> 3 times upper limit normal) * Patients with stage 4 or greater renal disease (GFR \<30 mL/min/1.73 m2) * Patients who are unable to swallow a tablet * Patients with active suicidal ideation or a history of suicide attempt or other serious psychiatric disorder having required hospitalization within the previous 2 years.