NCT07459101 UNIty-Based MR-Linac Guided Adaptive RadioThErapy for High GraDe Glioma-4

Trial Parameters

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Brief Summary

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

Inclusion Criteria: * 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 * ECOG performance status of 0, 1 or 2 * Sufficient estimated glomerular filtration rate (eGFR) of ≥ 30 mL/ min/1.73 m2 to allow administration of gadolinium-based contrast agent; patients with eGFR \< 30 mL/min/1.73 m2 not on dialysis may be allowed on the study after discussion of risks and benefits and approval by study neuroradiologist(s) * Completed written informed consent * Patient must be accessible for treatment and follow-up * Patients with multifocal or multicentric disease will be allowed per the discretion of the radiation oncologist Exclusion Criteria: * Contraindications to MRI examination as per sta

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