Treatment of Radiation-Induced Cognitive Decline in Adult Brain Tumor Patients

Author:

Cramer Christina K.,Cummings Tiffany L.,Andrews Rachel N.,Strowd Roy,Rapp Stephen R.,Shaw Edward G.,Chan Michael D.,Lesser Glenn J.

Publisher

Springer Science and Business Media LLC

Subject

Pharmacology (medical),Oncology

Reference96 articles.

1. Johnson DR, Sawyer AM, Meyers CA, O’Neill BP, Wefel JS. Early measures of cognitive function predict survival in patients with newly diagnosed glioblastoma. Neuro-Oncology. 2012;14(6):808–16.

2. Greene-Schloesser D, Robbins ME, Peiffer AM, Shaw EG, Wheeler KT, Chan MD. Radiation-induced brain injury: a review. Front Oncol. 2012;2:73.

3. Meyers CA, Smith JA, Bezjak A, Mehta MP, Liebmann J, Illidge T, et al. Neurocognitive function and progression in patients with brain metastases treated with whole-brain radiation and motexafin gadolinium: results of a randomized phase III trial. J Clin Oncol. 2004;22(1):157–65.

4. •• Brown PD, Pugh S, Laack NN, Wefel JS, Khuntia D, Meyers C, et al. Memantine for the prevention of cognitive dysfunction in patients receiving whole-brain radiotherapy: a randomized, double-blind, placebo-controlled trial. Neuro-Oncology. 2013;15(10):1429–37 This randomized, placebo-controlled study did not meet its pre-specified primary endpoint but did show that time to cognitive decline is longer in patients who receive memantine during and after WBRT.

5. •• Rapp SR, Case LD, Peiffer A, Naughton MM, Chan MD, Stieber VW, et al. Donepezil for irradiated brain tumor survivors: a phase III randomized placebo-controlled clinical trial. J Clin Oncol. 2015;33(15):1653–9 This was a seminal randomized, phase III, open-label, placebo-controlled trial enrolled irradiated brain tumor survivors (at least 6 months after RT) and evaluated cognition before treatment with donepezil or placebo and then after 24 weeks of medication. This study did not meet its pre-specified primary endpoint but patients randomized to donepezil performed better on measures of verbal and working memory (HVLT-DR and -IR). There was also an interaction effect between pre-randomization (baseline) cognitive performance and treatment group—patients with poorer initial cognitive functioning benefited more from donepezil. For this reason, donepezil continues to be used in the clinic.

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