QOL-05. Cardiorespiratory fitness and health-related quality of life amongst survivors of childhood central nervous system tumours.

INTRODUCTION: Due to recent advancements in surgical techniques, imaging and adjuvant therapies, survival rates for children with central nervous system (CNS) tumours have improved. Research priorities have now shifted to focus on late-effects and quality of survivorship amongst childhood CNS tumour survivors. Our study aimed to assess levels of cardiorespiratory fitness and health-related quality of life (HRQoL) amongst survivors of childhood CNS tumours. A secondary aim was to investigate potential relationships between cardiorespiratory fitness and HRQoL. METHODS: Participants were recruited from the National Children’s Cancer Service in CHI Crumlin. Inclusion criteria included: diagnosis of a primary CNS tumour, aged between 6-17 years, between 3 months and 5 years post completion of oncology treatment, independent mobility, deemed clinically appropriate to participate by treating oncologist. Cardiorespiratory fitness was assessed using the six-minute walk test. HRQoL was assessed with the PedsQL Generic Core Scales, Version 4.0, both self-report and parent proxy report forms were used. RESULTS: 20 participants (n=9 male) were recruited with a mean age of 12.34 (SD = 3.46) years. Mean time since completion of oncology treatment was 2.31 (SD = 1.38) years. Mean 6-minute walk distance (6MWD) was 482.75 (SD = 50.04) metres, equating to the 5.55th (SD = 6.83th) percentile overall. 6MWD was significantly reduced compared to predicted 6MWD (t = -12.52, p <.001, 95% CI [-163.52, -116.68]). Parent proxy-reported HRQoL was significantly reduced compared to healthy population norms (t = -5.82, p <0.001, 95% CI [-25.76, -12.17]). A strong positive correlation exists between 6MWD and both parent-proxy (Pearson’s r = 0.533, p = 0.015) and child-reported HRQoL (r = 0.580, p = 0.007). CONCLUSION: Survivors of childhood CNS tumours present with impaired levels of cardiorespiratory fitness and HRQoL compared to healthy population norms. Higher levels of cardiorespiratory fitness are associated with higher levels of HRQoL.