Abstract
Background
Serum neurofilament light chain (sNfL) may be used as a biological marker of disease progression in multiple sclerosis (MS), although longitudinal studies correlating cognitive deficits to sNfL are limited.
Objective
To longitudinally investigate the relation between cognitive dysfunction, sNfL and MRI brain volume in a relapsing remitting MS patients.
Methods
18 MS patients (9 males and 9 females, mean age 45 years, mean education 12.6 years) all prescribed with interferon beta 1a (44 mcg 3 times per week), are longitudinally evaluated by means of annual clinical exam with EDSS, neuropsychological evaluation with Brief repeatable battery (BRB) and Delis Kaplan Executive function test (DKEFS), dosage of sNfL (SIMOA) and MRI.
Results
Here are reported the results of 1 year follow-up. A significantly higher sNfL in MS compared to healthy controls and higher sNfL in patients with greater cognitive impairment were found. Cognitive Impairment Index, memory, executive function tests correlated with sNfL. Gray matter volume resulted unchanged at 1-year follow-up; a weak correlation between some tests’ score and selective cortical brain areas was found.
Conclusion
Our longitudinal pilot study confirms that sNfL are related to cognitive abilities, confirming data of other authors from retrospective studies.
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Acknowledgements
We thank Fondazione Cesare Serono for editing support.
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The study received partial support from Fondazione Cesare Serono.
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FM: received compensation from Novartis for speaking and from Fondazione Cesare Serono for consultant fee; RC: received compensation from Biogen, Novartis and Merck Serono as a speaker and for attending scientific meetings; SM: received support for attending scientific meetings by Merck and Euroimmun.
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The research protocol has been approved by the Comitato Etico ASST Brescia; the study has been conducted according to the Declaration of Helsinki.
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Mattioli, F., Bellomi, F., Stampatori, C. et al. Longitudinal serum neurofilament light chain (sNfL) concentration relates to cognitive function in multiple sclerosis patients. J Neurol 267, 2245–2251 (2020). https://doi.org/10.1007/s00415-020-09832-1
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DOI: https://doi.org/10.1007/s00415-020-09832-1