HOUT-21. REAL-WORD EVALUATION OF THE IMPACT OF RADIOTHERAPY AND CHEMOTHERAPY IN ELDERLY PATIENTS WITH GLIOBLASTOMA BASED ON AGE AND PERFORMANCE STATUS: A NATIONAL CANCER DATABASE ANALYSIS

OBJECTIVES: This retrospective study evaluates the impact of Karnofsky performance status (KPS) in addition to age on the management and outcomes of elderly patients with glioblastoma (GBM). METHODS: The National Cancer Database (NCDB) was queried between 2004–2015 for GBM patients with age 60 and reported KPS. Four groups were created: Age 60/ KPS