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Serum neurofilament light levels are correlated to long-term neurocognitive outcome measures after cardiac arrest

Blennow Nordström, Erik; Lilja, Gisela; Ullén, Susann; Blennow, Kaj; Friberg, Hans; Hassager, Christian; Kjærgaard, Jesper; ... Cronberg, Tobias; + view all (2022) Serum neurofilament light levels are correlated to long-term neurocognitive outcome measures after cardiac arrest. Brain Injury , 36 (6) pp. 800-809. 10.1080/02699052.2022.2048693. Green open access

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Abstract

OBJECTIVE: To explore associations between four methods assessing long-term neurocognitive outcome after out-of-hospital cardiac arrest and early hypoxic-ischemic neuronal brain injury assessed by the biomarker serum neurofilament light (NFL), and to compare the agreement for the outcome methods. METHODS: An explorative post-hoc study was conducted on survivor data from the international Target Temperature Management after Out-of-hospital Cardiac Arrest trial, investigating serum NFL sampled 48/72-hours post-arrest and neurocognitive outcome 6 months post-arrest. RESULTS: Among the long-term surviving participants (N = 457), serum NFL (n = 384) was associated to all outcome instruments, also when controlling for demographic and cardiovascular risk factors. Associations between NFL and the patient-reported Two Simple Questions (TSQ) were however attenuated when adjusting for vitality and mental health. NFL predicted results on the outcome instruments to varying degrees, with an excellent area under the curve for the clinician-report Cerebral Performance Category (CPC 1-2: 0.90). Most participants were classified as CPC 1 (79%). Outcome instrument correlations ranged from small (Mini-Mental State Examination [MMSE]-TSQ) to strong (CPC-MMSE). CONCLUSIONS: The clinician-reported CPC was mostly related to hypoxic-ischemic brain injury, but with a ceiling effect. These results may be useful when selecting methods and instruments for clinical follow-up models.

Type: Article
Title: Serum neurofilament light levels are correlated to long-term neurocognitive outcome measures after cardiac arrest
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1080/02699052.2022.2048693
Publisher version: https://doi.org/10.1080/02699052.2022.2048693
Language: English
Additional information: © 2022 The Author(s). Published with license by Taylor & Francis Group, LLC. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way
Keywords: Hypoxic-ischemic encephalopathy, biomarker, cardiovascular disease, cognitive impairment, heart arrest
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
URI: https://discovery.ucl.ac.uk/id/eprint/10145586
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