QOLP-20. IMPACT OF GLIOBLASTOMA ON PATIENT-REPORTED SYMPTOM BURDEN AND PHYSICAL ACTIVITY ASSESSED BY CONVENTIONAL INSTRUMENTS AND A NOVEL DEVICE–BASED TECHNOLOGY

Abstract

Abstract Glioblastoma (GBM) is a rapidly progressing disease associated with significant deterioration in quality of life. This study evaluated clinical patient-reported outcomes (PROs) and the physical activity of patients with GBM. Adults with GBM (n=180) were stratified across 4 groups representing specific stages in the disease course: Group 1=newly diagnosed; 2=postradiation; 3=stable disease; 4=recurrence. Self-reported physical function (EORTC-QLQC30), motor dysfunction (BN20), symptom burden and interference (MDASI-BT), and objective physical activity level (via Fitbit®) were compared across groups by ANOVA. Associations between outcomes were assessed with a Pearson correlation (r) test. Patients were highly symptomatic, with overall mean (MDASI-BT) symptom severity (1.7–2.4; P=0.23) and interference (2.3–3.2; P=0.68) scores similar across groups. Patients with recurrent disease experienced the numerically greatest symptom severity and interference. Self-reported activity-related interference scores (2.7–3.6, P=0.48) were highest in patients with newly diagnosed or recurrent disease. Motor dysfunction (BN20) mean scores were highest in postradiation (22) and recurrent (22) disease groups (P=0.95). Mean physical function (EORTC-QLQC30) scores were worse in patients with recurrent disease (67) than in those with stable disease (79; P=0.38). Newly diagnosed patients and those with stable disease were the most active (≈4000 and ≈4500 mean steps/day, respectively), whereas those with recurrent disease were least active (≈2300 mean steps/day; P=0.032). Greater physical activity (via Fitbit®) correlated with better self-reported physical function (EORTC-QLQC30) for all groups (Group 1, r=0.0292; Group 2, r=0.0211; Group 3, r=0.0008; Group 4, r=0.0002). Greater motor dysfunction was correlated with lower physical activity in patients with stable (r=0.0003) and recurrent (r=0.0441) disease. Patients in this study were highly symptomatic throughout the disease stages with disease recurrence associated with worse motor and physical function. Future studies exploring these findings in a longitudinal cohort are needed to assess this relationship.