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How do molecular and clinical factors guide personalized selection of HSRT dose fractionation regimens with bevacizumab in recurrent high-grade gliomas?

Multivariate analysis identified HSRT dose fractionation, tumor grade, IDH mutation, and 1p/19q codeletion as significant predictors of PFS- do these findings support moving toward a biomarker-driven stratification approach in future trials? This question is part of our collaboration with ASTRO 2025 to highlight impactful trial data from this year's meeting. This question is inspired by the Clinical Trials Session Presentation "Efficacy of Hypofractionated Stereotactic Radiotherapy with Different Dose Fractionation Regimens Combined with Concurrent Bevacizumab in Recurrent High-Grade Gliomas: A Randomized Controlled Trial" by Dr. Feng Liu.
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Radiation Oncology · Johns Hopkins
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Multivariate analysis identifying HSRT dose fractionation, tumor grade, IDH mutation, and 1p/19q codeletion as significant predictors of progression-free survival (PFS) in recurrent high-grade glioma strongly supports a shift toward biomarker-driven stratification in future trials. These findings un...

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Radiation Oncology · Renown Health Institute for Cancer
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Is there a size limitation to SRT for recurrent GBM? I traditionally have always done the 35/10 Fogh regimen for anything over 3 cm. However, now with this data, I'm feeling I need to be a bit more aggressive with fractionated radiosurgery. Anyone doing 30/5 for 5 cm+ recurrences with Avastin?

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