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Interleukin-6 is a stronger prognostic predictor than high-sensitive C-reactive protein in patients with chronic

Borut Jug1, Barbara Guzic Salobir, Nina Vene

  • 1Department of Vascular Diseases, Clinic of Internal Medicine, University Clinical Center Ljubljana, Zaloska 7/VI, Ljubljana SI-1000, Slovenia. borut.jug@gmail.com

Heart and Vessels
|July 24, 2009
PubMed

Insights

Interleukin-6 (IL-6) better predicts outcomes in chronic heart failure patients than high-sensitivity C-reactive protein (hsCRP). IL-6 levels indicate a higher risk of heart failure events, informing prognosis.

Area of Science:

  • Cardiology
  • Immunology
  • Biomarker Research

Background:

  • Immune system activation is linked to heart failure severity and prognosis.
  • Interleukin-6 (IL-6) and high-sensitivity C-reactive protein (hsCRP) are established inflammatory markers.
  • Prognostic value of these markers in chronic heart failure requires further comparison.

Purpose of the Study:

  • To compare the prognostic impact of IL-6 and hsCRP in stable chronic heart failure patients.
  • To determine which inflammatory marker, IL-6 or hsCRP, is a superior predictor of adverse events.

Main Methods:

  • Prospective study of 201 stable outpatients with chronic heart failure.
  • Baseline measurement of serum IL-6 and hsCRP levels.
  • Clinical follow-up to record heart failure-related deaths or hospitalizations.

Main Results:

  • Patients experiencing events had higher baseline hsCRP and IL-6 levels.
  • Cox multivariate analysis identified IL-6 as an independent predictor of prognosis (aHR 2.74, P=0.020).
  • hsCRP did not emerge as an independent predictor in the multivariate analysis.

Conclusions:

  • IL-6 is a more effective prognostic marker than hsCRP in chronic stable heart failure.
  • IL-6 levels can aid in risk stratification and management of heart failure patients.
  • Further research into immune markers for heart failure prognosis is warranted.

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