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- W4253759212 endingPage "294" @default.
- W4253759212 startingPage "284" @default.
- W4253759212 abstract "Multiple sclerosis (MS) is a chronic disease of the CNS that most commonly affects young adults. It is usually characterized in the early years by acute relapses followed by partial or complete remission; in later years progressive and irreversible disability develops. Because of the protracted and unpredictable clinical course, biological surrogate markers are much needed to make clinical trials of potential disease-modifying treatments more efficient. Magnetic resonance (MR) outcome measures are now widely used to monitor treatment outcome in MS trials. Areas of multifocal inflammation are detected with a high sensitivity as new areas of gadolinium enhancement and T2 abnormality, and these may be considered as surrogate markers for clinical relapses. However, progressive disability is not clearly related to inflammatory lesions but rather to a progressive and diffuse process with increasing neuroaxonal loss. MR surrogate measures for neuroaxonal loss include atrophy (tissue loss in brain and spinal cord), N-acetyl aspartate, and T1 hypointense lesions. Diffuse abnormality in normal appearing brain tissue may also be monitored using magnetization transfer ratio and other quantitative MR measures. For treatment trials of new agents aimed at preventing disability, measures of neuroaxonal damage should be acquired, especially atrophy, which occurs at all stages of MS and which can be quantified in a sensitive and reproducible manner. Because the MR surrogates for neuroaxonal loss are not yet validated as predicting future disability, definitive trials should continue to monitor an appropriate disability endpoint." @default.
- W4253759212 created "2022-05-12" @default.
- W4253759212 creator A5083168810 @default.
- W4253759212 date "2004-04-01" @default.
- W4253759212 modified "2023-10-18" @default.
- W4253759212 title "Biomarkers and surrogate outcomes in neurodegenerative disease: Lessons from multiple sclerosis" @default.
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