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- W4308889600 abstract "Proton beam radiation therapy reduces dose to healthy brain tissue and thereby decreases the risk of treatment-related decline in neurocognition. Considering the paucity of prospective data, this study aimed to evaluate neurocognitive performance in an adult patient population with intracranial tumors.Between 2017 and 2021, patients enrolled in the MedAustron registry study and irradiated for intracranial tumors were eligible for neurocognitive assessment. Patients with available 1-year follow-up data were included in the analysis. The test battery consisted of a variety of standardized tests commonly used in European Organization for Research and Treatment of Cancer trials. Scores were transformed into z scores to account for demographic effects, and clinically relevant change was defined as a change of ≥1.5 standard deviations. Binary logistic regression analysis and the χ2 test were conducted for clinical parameters and dosimetric hippocampal parameters to evaluate the relationship with overall cognitive decline and changes in memory.One hundred twenty-three patients with mostly nonprogressive, extra-axial tumors and neurocognitive assessment at baseline and treatment end as well as 3, 6, and 12 months after completion of proton beam radiation therapy were analyzed. Overall, 7 test scores revealed stability in neurocognitive function with minimal positive changes 1 year after treatment completion (statistically significant in 6 of 7 tests), whereas the majority had no or minimal baseline deficits. At 1-year follow-up, 89.4% of all patients remained stable in their overall cognitive functioning without clinically relevant deterioration in 2 or more tests. None of them showed disease progression. Of the patients, 8.1% presented with radiation-induced brain lesions and exhibited a higher percentage of overall cognitive deterioration without reaching statistical significance. Multivariate binary logistic regression analysis revealed higher age at baseline as the only independent parameter to be associated with an overall clinically relevant cognitive decline. There was no significant correlation of hippocampal doses and memory functioning.One year after proton therapy, we observed preservation of cognitive functioning in the vast majority of our patients with intracranial tumors." @default.
- W4308889600 created "2022-11-18" @default.
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- W4308889600 date "2023-04-01" @default.
- W4308889600 modified "2023-10-16" @default.
- W4308889600 title "Preservation of Neurocognition after Proton Beam Radiation Therapy for Intracranial Tumors: First Results from REGI-MA-002015" @default.
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- W4308889600 doi "https://doi.org/10.1016/j.ijrobp.2022.09.081" @default.
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