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October 24, 2025Frontiers in Cardiovascular MedicineOpen Access

High interleukin-8 serum levels (>5.3 pg/ml) independently predicted a 2.57-fold increased risk of 10-year all-cause mortality in patients with chronic heart failure.

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Why the study?

Inflammation is increasingly recognized in chronic heart failure progression, but the association of cytokine and chemokine profiles with mild cognitive impairment and long-term mortality required investigation.

Do high interleukin-8 serum levels predict all-cause mortality and mild cognitive impairment in patients with chronic heart failure?

Population

145 patients with chronic HF from the Cognition.Matters-HF baseline cohort

Comparison

Cytokine and chemokine profiles, including high vs lower IL-8 levels

Design

Cohort study

Follow-up

10 years

Key result

High interleukin-8 serum levels (>5.3 pg/ml) independently predicted a 2.57-fold increased risk of 10-year all-cause mortality in patients with chronic heart failure.

Authors

JTJan TraubMSMichael K. SchuhmannUHUlrich Hofmann

Discussion

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Member takes

Overview

May refine risk stratification in chronic HF; hypothesis-generating for IL-8 as therapeutic target.

Study Design

Type

Cohort (n=145)

Multicenter

No

Structured PICO

Do high interleukin-8 serum levels predict all-cause mortality and mild cognitive impairment in patients with chronic heart failure?

P
Population
145 adult patients (median age 64, 15% female) with chronic heart failure, free of recent decompensation or clinical stroke, followed for 10 years.
E
Exposure
High interleukin-8 (IL-8) serum levels (>5.3 pg/ml)
C
Comparator
Low interleukin-8 (IL-8) serum levels (≤5.3 pg/ml)
O
Outcome
All-cause mortality over 10 yearshard clinical

Main Result

Hazard Ratio: 2.57 (95% CI 1.44–4.57)

p-value: p=0.001

High serum IL-8 levels independently predict long-term all-cause mortality in patients with chronic heart failure, suggesting its potential as a prognostic biomarker.

Limitations

  • Cross-sectional design for cytokine measurement at a single time point, preventing assessment of temporal fluctuations.
  • Relatively small cohort size (n=145) and small number of patients with IL-8 >5.3 pg/ml (n=21).
  • High proportion of cytokine values below detection limits in the multiplex assay.
  • Cohort recruited before the widespread clinical uptake of ARNI, SGLT2 inhibitors, and GLP-1 receptor agonists.
  • Exclusion criteria did not account for inflammatory comorbidities, recent infections, or trauma.
  • Not powered to answer MCI hypothesis (type II error)
  • Subclinical conditions (silent strokes, subtle vascular changes) not fully accounted for
  • Cross-sectional design of cognitive assessment
  • Detection limitations for cytokines
  • Cohort recruited before widespread clinical uptake of ARNI, SGLT2 inhibitors, and GLP-1 receptor agonists

Cite This Study

Traub et al. (2025) conducted a cohort in Chronic heart failure (n=145). High interleukin-8 (IL-8) serum levels (>5.3 pg/ml) vs. IL-8 levels ≤ 5.3 pg/ml was evaluated on 10-year all-cause mortality (Adj. HR 2.57, 95% CI 1.44-4.57, p=0.001). High interleukin-8 serum levels (>5.3 pg/ml) independently predicted a 2.57-fold increased risk of 10-year all-cause mortality in patients with chronic heart failure.

synapsesocial.com/papers/6a6c8448e36a167817df95c6https://doi.org/10.3389/fcvm.2025.1677503
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1High interleukin-8 serum levels independently predict long-term all-cause mortality in chronic heart failure2025
  2. 2Inflammatory Cytokines in Chronic Heart Failure: Interleukin-8 is Associated with Adverse Outcome. Results from CORONA2013 · 94 citations
  3. 3Serum inflammatory factors as predictors of severity and prognosis in heart failure: A cohort study.2026
  4. 4Soluble interleukin-2 receptor combined with interleukin-8 is a powerful predictor of future adverse cardiovascular events in patients with acute myocardial infarction2023 · 15 citations
  5. 5Inflammatory Cytokines as Risk Factors for Mortality After Acute Cardiac Events2016 · 34 citations