ArticleNeuro-oncology advances
Prediction of early distant brain failure after stereotactic radiotherapy for brain metastases.
Article in Neuro-oncology advances. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
Background: Stereotactic radiotherapy (SRT) is the main treatment for patients with 1 to 3-5 brain metastases (BMs) but with the compromise of a higher risk of distant brain failure (DBF) in comparison with whole brain radiotherapy. Early DBF has a significant negative impact on overall survival (OS). We propose to build and validate a prediction model of early DBF. Methods: Early DBF was defined as the appearance of unknown BMs on the first post-SRT magnetic resonance imaging (MRI). A nomogram was built for the prediction of early DBF using patients from a cohort of 537 SRT courses. The nomogram was evaluated for early DBF classification using the chi-squared test. Prediction of DBF-free survival and OS was tested using Kaplan-Meier curves and the log-rank test. The model was validated on an external cohort of 160 subsequently delivered SRT courses. Results: In the cohort of 537 SRT courses, early DBF occurred in 17% cases. The number of BMs and the DS-GPA score were significant predictors of early DBF. The nomogram demonstrated robust performances for early DBF classification (χ Conclusion: Our study provides a robust predictive model for early DBF, validated in an independent cohort. This nomogram could improve clinical outcomes and treatment personalization.
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