S100B Serum Level as a Mortality Predictor for Traumatic Brain Injury: A Meta-Analysis


  • Nyoman Golden Department of Neurosurgery, Faculty of Medicine, Udayana University, Sanglah General Hospital, Bali
  • Tjokorda Gde Bagus Mahadewa Department of Neurosurgery, Faculty of Medicine, Udayana University, Sanglah General Hospital, Bali
  • Citra Aryanti Department of Neurosurgery, Faculty of Medicine, Udayana University, Sanglah General Hospital, Bali
  • I Putu Eka Widyadharma Department of Neurology, Faculty of Medicine, Udayana University, Sanglah General Hospital, Bali http://orcid.org/0000-0002-4554-0348




traumatic brain injury, S100B serum level, mortality



BACKGROUND: The pathogenesis of inflammatory neuronal cell damage will continue after traumatic brain injury in which contributed to subsequent mortality. Serum S100B levels were shown to be an early predictor of mortality due to traumatic brain injury.

AIM: This Meta-Analysis will analyse the mean and diagnostic strength of serum S100B levels between survived and died subjects with head injuries based on the various follow-up times of nine studies.

METHODS: We conducted a meta-anelysis in accordance with PRISMA guidelines and adhering to Cochrane Handbook for Systematic Review of Interventions. Literature search was conducted on March 16, 2018 from Medline and Scopus in the past 10 years, using various keywords related to S100, brain injury, and outcome. Duplicate journals were sorted out via EndNote. Included articles were as follows: original data from the group, clinical trials, case series, patients undergoing serum S100B levels with both short- and long-term follow-up mortality. Data were collected for mortality, serum S100B levels, and its diagnostic strength. All data were analyzed using Review Manager 5.3 (Cochrane, Denmark).

RESULTS: The results of the meta-analysis showed a significant difference in S100B levels between survived and died subjects with head injuries on overall follow-up timeline (0.91, 95.9% CI 0.7-1.12, I2 = 98%, p < 0.001), during treatment (1.43, 95% CI 0.97 to 1.89, I2 = 98%, p < 0.001), or 6 months (0.19; 95%CI 0.1-0.29, I2 = 76%, p < 0.001) with an average threshold value that varies according to the study method used. The mean diagnostic strength was also promising to predict early mortality (sensitivity of 77.18% and 92.33%, specificity of 78.35% and 50.6%, respectively).

CONCLUSION: S100B serum levels in the future will be potential biomarkers, and it is expected that there will be standardised guidelines for their application.


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How to Cite

Golden N, Mahadewa TGB, Aryanti C, Widyadharma IPE. S100B Serum Level as a Mortality Predictor for Traumatic Brain Injury: A Meta-Analysis. Open Access Maced J Med Sci [Internet]. 2018 Nov. 15 [cited 2022 May 19];6(11):2239-44. Available from: https://oamjms.eu/index.php/mjms/article/view/oamjms.2018.432



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