Association of Serum IL-6 (Interleukin 6) With Functional Outcome After Intracerebral Hemorrhage
BACKGROUND AND OBJECTIVES: IL-6 (interleukin 6) is a proinflammatory cytokine and an established biomarker in acute brain injury. We sought to determine whether admission IL-6 levels are associated with severity and functional outcome after spontaneous intracerebral hemorrhage (ICH).
METHODS: We performed an exploratory analysis of the recombinant activated FAST trial (Factor VII for Acute ICH). Patients with admission serum IL-6 levels were included. Regression analyses were used to assess the associations between IL-6 and 90-day modified Rankin Scale. In secondary analyses, we used linear regression to evaluate the association between IL-6 and baseline ICH and perihematomal edema volumes.
RESULTS: Of 841 enrolled patients, we included 552 (66%) with available admission IL-6 levels (mean age 64 [SD 13], female sex 203 [37%]). IL-6 was associated with poor outcome (modified Rankin Scale, 4-6; per additional 1 ng/L, odds ratio, 1.30 [95% CI, 1.04-1.63];
CONCLUSIONS: In the FAST trial population, higher admission IL-6 levels were associated with worse 90-day functional outcome and larger ICH and perihematomal edema volumes.
Leasure, A. C., Kuohn, L. R., Vanent, K. N., Bevers, M. B., Kimberly, W. T., Steiner, T., Mayer, S. A., Matouk, C. C., Sansing, L. H., Falcone, G. J., & Sheth, K. N. (2021). Association of Serum IL-6 (Interleukin 6) With Functional Outcome After Intracerebral Hemorrhage. Stroke, 52 (5), 1733-1740. https://doi.org/10.1161/STROKEAHA.120.032888