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Blood biomarkers on admission in acute traumatic brain injury: Relations to severity, CT findings and care path in the CENTER-TBI study
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2020 (Engelska)Ingår i: EBioMedicine, E-ISSN 2352-3964, Vol. 56, artikel-id 10275Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background: Serum biomarkers may inform and improve care in traumatic brain injury (TBI). We aimed to correlate serum biomarkers with clinical severity, care path and imaging abnormalities in TBI, and explore their incremental value over clinical characteristics in predicting computed tomographic (CT) abnormalities.

Methods: We analyzed six serum biomarkers (S100B, NSE, GFAP, UCH-L1, NFL and t-tau) obtained <24 h post-injury from 2867 patients with any severity of TBI in the Collaborative European NeuroTrauma Effectiveness Research (CENTER-TBI) Core Study, a prospective, multicenter, cohort study. Univariable and multivariable logistic regression analyses were performed. Discrimination was assessed by the area under the receiver operating characteristic curve (AUC) with 95% confidence intervals.

Findings: All biomarkers scaled with clinical severity and care path (ER only, ward admission, or ICU), and with presence of CT abnormalities. GFAP achieved the highest discrimination for predicting CT abnormalities (AUC 0•89 [95%CI: 0•87-0•90]), with a 99% likelihood of better discriminating CT-positive patients than clinical characteristics used in contemporary decision rules. In patients with mild TBI, GFAP also showed incremental diagnostic value: discrimination increased from 0•84 [95%CI: 0•83-0•86] to 0•89 [95%CI: 0•87-0•90] when GFAP was included. Results were consistent across strata, and injury severity. Combinations of biomarkers did not improve discrimination compared to GFAP alone.

Interpretation: Currently available biomarkers reflect injury severity, and serum GFAP, measured within 24 h after injury, outperforms clinical characteristics in predicting CT abnormalities. Our results support the further development of serum GFAP assays towards implementation in clinical practice, for which robust clinical assay platforms are required.

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Elsevier, 2020. Vol. 56, artikel-id 10275
Nyckelord [en]
Traumatic brain injury; Biomarkers, GFAP, Serum, Diagnostic, Computerized tomography, Clinical decision rule, Injury severity
Nationell ämneskategori
Neurologi
Identifikatorer
URN: urn:nbn:se:umu:diva-179920DOI: 10.1016/j.ebiom.2020.102785ISI: 000549929200009PubMedID: 32464528Scopus ID: 2-s2.0-85085195748OAI: oai:DiVA.org:umu-179920DiVA, id: diva2:1528665
Tillgänglig från: 2021-02-16 Skapad: 2021-02-16 Senast uppdaterad: 2023-05-02Bibliografiskt granskad

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Brorsson, CamillaKoskinen, Lars-OweSundström, Nina

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