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In their article in this issue of Neurology®, Lin and colleagues1 provide compelling evidence for the utility of a neurofilament light chain (NfL) blood test in predicting progression in Parkinson disease (PD) and in distinguishing PD from multisystem atrophy (MSA). If confirmed by independent studies, this would be a major advance for clinical and basic research. Such a test also may have complex consequences for clinical care.
Footnotes
Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the editorial.
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