About this trial
This study builds on the results of prior studies (UNITED and UNITED-3). The goal of UNITED-4 is to test whether an adaptive radiation therapy (RT) therapy approach ('dose painting'), with reduced margins, impacts approach in participants with glioblastoma impacts local control compared to standard non-adaptive RT approach. The main questions of the study are to see how this adaptive RT approach with reduced margins compares to standard RT in terms of:
* Local control * Overall and progression-free survival * Patterns of failure * Toxicity, Neurological Function, and Quality of Life * Longitudinal imaging features
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Histopathologically confirmed, based on biopsy or surgical resection, glioblastoma or WHO grade 4 astrocytoma (IDH wild type or mutant)
Deemed clinically appropriate for concurrent chemoradiotherapy (with temozolomide) with definitive/radical intent
Biopsy or surgical resection performed ≤ 12 weeks prior to study entry
Expected survival ≥ 12 weeks
Disqualifiers
Contraindications to MRI examination as per standard MRI screening policy
Contraindication to Gadolinium-based contrast media
Enhancing disease involving any part of the brainstem on post-gadolinium T1-weighted MRI imaging for patients being treated using the short-course 15-fraction regimen
Inability to lie flat in a supine position for at least 30 minutes
Trial design
Single group
Treatments tested in this trial
Dose painting + Reduced Margins
RadiationReduced margins using a dose painting approach
Treatment groups
Trial outcomes
Primary outcomes
Disease worsening at 6 months
Secondary outcomes
Overall survival
Type of progression
Whether the progression occurred at local, marginal, or distant location
Number of participants with RT-related adverse events as assessed by CTCAE v5.0
Acute (within 3 months of RT completion) and late (\> 3 months of RT completion) effects will be assessed
Neurological Function
Will be assessed by your treating doctor, using the Neurological Assessment in Neuro-Oncology (NANO) scale
Sponsors and contacts
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