ODE-491

TREATMENT OF ADULT AND PEDIATRIC PATIENTS 12 YEARS AND OLDER WITH GRADE 2 ASTROCYTOMA OR OLIGODENDROGLIOMA WITH A SUSCEPTIBLE ISOCITRATE DEHYDROGENASE-1 (IDH1) OR ISOCITRATE DEHYDROGENASE-2 (IDH2) MUTATION FOLLOWING SURGERY INCLUDING BIOPSY, SUB-TOTAL RES