Performance status • Karnofsky performance status (KPS) • Eastern Cooperative Oncology Group (ECOG) Symptom assessment • MD Anderson Symptom Inventory Brain Tumor module (MDASI-BT) Quality of life assessment • European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire C30 (EORTC QLQ-C30) • EORTC QLQ-BN20 (specifically for brain tumor patients) • Functional Assessment of Cancer Therapy–Brain (FACT-Br) Neurocognitive assessment • Mini-Mental State Examination (MMSE) • Wechsler Adult Intelligence Scale–Revised (WAIS-R) • Hopkins Verbal Learning Test–Revised (HVLT-R) • Trail Making Tests (TMT) • Controlled Oral Word Association (COWA)