Thelin, EP;
Al Nimer, F;
Frostell, A;
Zetterberg, H;
Blennow, K;
Nyström, H;
Svensson, M;
... Nelson, DW; + view all
(2019)
A serum protein biomarker panel improves outcome prediction in human traumatic brain injury.
Journal of Neurotrauma
, 23
(20)
2850-2862..
10.1089/neu.2019.6375.
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Abstract
Brain-enriched protein biomarkers of tissue fate are being introduced clinically to aid in traumatic brain injury (TBI) management. The aim of this study was to determine how concentrations of six different protein biomarkers, measured in samples collected during the first weeks after TBI, relate to injury severity and outcome. We included neuro-critical care TBI patients that were prospectively enrolled from 2007 to 2013, all having 1 to 3 blood samples drawn during the first two weeks. The biomarkers analyzed were S100B, neuron-specific enolase (NSE), glial fibrillary acidic protein (GFAP), ubiquitin carboxy-terminal hydrolase-L1 (UCH-L1), tau and neurofilament-Light (NF-L). Glasgow Outcome Score (GOS) was assessed at 12 months. In total, 172 patients were included. All serum markers were associated with injury severity as classified on computed tomography scans at admission. Almost all biomarkers outperformed other known outcome predictors with higher levels the first five days, correlating with unfavorable outcomes, and UCH-L1 (0.260 pseduo-R2) displaying the best discrimination in univariate analyses. After adjusting for acknowledged TBI outcome predictors, GFAP and NF-L added most independent information to predict favorable/unfavorable GOS, improving the model from 0.38 to 0.51 pseudo-R2. A correlation matrix indicated substantial co-variance, with the strongest correlation between UCH-L1, GFAP and tau (r=0.827 to 0.880). Additionally, the principal component analysis exhibited clustering of UCH-L1 and tau, as well as GFAP, S100B and NSE, which was separate from NF-L. In summary, a panel of several different protein biomarkers, all associated with injury severity, with different cellular origin and temporal trajectories, improve outcome prediction models.
| Type: | Article |
|---|---|
| Title: | A serum protein biomarker panel improves outcome prediction in human traumatic brain injury |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1089/neu.2019.6375 |
| Publisher version: | https://doi.org/10.1089/neu.2019.6375 |
| Language: | English |
| Additional information: | This Open Access article is distributed under the terms of the Creative Commons License ( http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. |
| Keywords: | Traumatic brain injury, Serum analysis, Protein biomarkers, Functional outcome, Injury severity assessment, Neuroradiology |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences 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 UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10074964 |
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