Abstract
Purpose
The impact of age on optimal management of glioblastoma remains unclear. A recent combined analysis of two randomised trials, GEINO14-01 and EX-TEM, found no benefit from extending post-radiation temozolomide in newly diagnosed glioblastoma. Here, we explore the impact of age.
Methods
Relevant intergroup statistics were used to identify differences in tumour, treatment and outcome characteristics based on age with elderly patients (EP) defined as age 65 years and over. Survival was estimated using the Kaplan Meier method.
Results
Of the combined 205 patients, 57 (28%) were EP. Of these, 95% were ECOG 0–1 and 65% underwent macroscopic resection compared with 97% and 61% of younger patients (YP) respectively. There were numerically less MGMT-methylated (56% vs. 63%, p = 0.4) and IDH-mutated (4% vs. 13%, p = 0.1) tumours in EP vs. YP. Following surgery, EP were more likely to receive short course chemoradiation (17.5% vs. 6%, p = 0.017). At recurrence, EP tended to receive or best supportive care (28.3% vs. 15.4%, p = 0.09) or non-surgical options (96.2% vs. 84.6%, p = 0.06), but were less likely to receive bevacizumab (23.1% vs. 49.5%, p < 0.01). Median PFS was similar at 9.3months in EP and 8.5months in YP, with similar median OS at 20months.
Conclusion
In this trial population of predominantly fit EP, survival was similar to YP despite a proportion receiving less aggressive therapy at diagnosis and recurrence. Advancing age does not appear to be an adverse prognostic factor for glioblastoma when patients are fit for treatment, and a less aggressive approach in selected patients may not compromise outcomes.
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Data availability
The data generated in this study are not publicly available as this would compromise patient consent but are available upon reasonable request from the corresponding author.
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Funding
The studies were supported financially by the Victoria Comprehensive Cancer Centre (EX-TEM) and a grant from the Spanish Institute Carlos III (ISCIII: PI13/01751 to Carmen Balana) (GEINO14-01). Analysis and manuscript preparation was made possible in part through the authors’ membership of the Brain Cancer Centre.
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All authors contributed to the study conception and design as well as data collection. Material preparation and analysis were performed by LG. The first draft of the manuscript was written by LG and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Gately, L., Mesía, C., Sepúlveda, J. et al. Exploring management and outcomes of elderly patients with glioblastoma using data from two randomised trials (GEINO1401/EX-TEM). J Neurooncol (2024). https://doi.org/10.1007/s11060-024-04668-5
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DOI: https://doi.org/10.1007/s11060-024-04668-5