C F Lorimer1, C Hanna2, F Saran3, A Chalmers2, J Brock4. 1. Brighton and Sussex Medical School, Brighton, UK. 2. NHS Greater Glasgow and Clyde, Glasgow, UK. 3. The Royal Marsden NHS Foundation Trust, London, UK. 4. Brighton and Sussex University Hospitals, Brighton, UK. Electronic address: juliet.brock@bsuh.nhs.uk.
Abstract
AIMS: There is now evidence to support giving single-agent chemotherapy, radiotherapy or hypofractionated concurrent chemoradiotherapy to older patients with glioblastoma (GBM). However, the clinical basis on which treatment decisions are made is under-researched and not standardised. This retrospective, multicentre study assessed whether pre-morbid characteristics or tumour imaging features could predict for overall survival in a cohort of older patients with GBM. MATERIALS AND METHODS: Patients aged > 70 years, diagnosed with GBM at three neuro-oncology centres from 2010 to 2015 were retrospectively analysed. Demographic, clinical, radiological and treatment details were included in a multivariate model to examine for predictors of overall survival. RESULTS: In total, 339 patients were included with a median overall survival of 3.8 months. One and 2 year overall survival rates were 13% and 4%, respectively. The median age at diagnosis was 75 years. Pre-treatment characteristics predicting for overall survival included Eastern Cooperative Oncology Group performance status over 0 (performance status 1, hazard ratio 1.66, P = 0.042; performance status 2, hazard ratio 1.78, P = 0.031; performance status 3, hazard ratio 2.20, P = 0.008; performance status 4, hazard ratio 2.40, P = 0.021), radiological evidence of mass effect (hazard ratio 1.31, P = 0.049), multifocal tumours (hazard ratio 3.419, P = 0.013), presenting with seizures (hazard ratio 0.63, P = 0.008) and tumours confined to the cerebral hemisphere (hazard ratio 0.59, P = 0.048). Subtotal resection decreased risk of death by 37% (P = 0.019) and total tumour resection by 44% (P = 0.019). Palliative radiotherapy decreased risk of death by 41% (P = 0.005), temozolomide alone by 60% (P = 0.004) and radical chemoradiotherapy by 81% (P < 0.001). CONCLUSION: Clinical presentation, performance status and imaging characteristics are independent prognostic indicators of overall survival in older GBM patients, irrespective of age or treatment received.
AIMS: There is now evidence to support giving single-agent chemotherapy, radiotherapy or hypofractionated concurrent chemoradiotherapy to older patients with glioblastoma (GBM). However, the clinical basis on which treatment decisions are made is under-researched and not standardised. This retrospective, multicentre study assessed whether pre-morbid characteristics or tumour imaging features could predict for overall survival in a cohort of older patients with GBM. MATERIALS AND METHODS:Patients aged > 70 years, diagnosed with GBM at three neuro-oncology centres from 2010 to 2015 were retrospectively analysed. Demographic, clinical, radiological and treatment details were included in a multivariate model to examine for predictors of overall survival. RESULTS: In total, 339 patients were included with a median overall survival of 3.8 months. One and 2 year overall survival rates were 13% and 4%, respectively. The median age at diagnosis was 75 years. Pre-treatment characteristics predicting for overall survival included Eastern Cooperative Oncology Group performance status over 0 (performance status 1, hazard ratio 1.66, P = 0.042; performance status 2, hazard ratio 1.78, P = 0.031; performance status 3, hazard ratio 2.20, P = 0.008; performance status 4, hazard ratio 2.40, P = 0.021), radiological evidence of mass effect (hazard ratio 1.31, P = 0.049), multifocal tumours (hazard ratio 3.419, P = 0.013), presenting with seizures (hazard ratio 0.63, P = 0.008) and tumours confined to the cerebral hemisphere (hazard ratio 0.59, P = 0.048). Subtotal resection decreased risk of death by 37% (P = 0.019) and total tumour resection by 44% (P = 0.019). Palliative radiotherapy decreased risk of death by 41% (P = 0.005), temozolomide alone by 60% (P = 0.004) and radical chemoradiotherapy by 81% (P < 0.001). CONCLUSION: Clinical presentation, performance status and imaging characteristics are independent prognostic indicators of overall survival in older GBM patients, irrespective of age or treatment received.
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