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Published on: January 28, 2020
Serum YKL-40 predicts long-term mortality in patients with stable coronary disease: a prognostic study within the
Marina Harutyunyan1, Jens P Gøtze, Per Winkel
1Department of Medicine B, The Heart Centre, Rigshospitalet, Copenhagen University Hospital and Faculty of Health Sciences, Copenhagen, Denmark. marinah@dadlnet.dk
Insights
The inflammatory biomarker YKL-40 improves long-term mortality prediction in stable coronary artery disease (CAD) patients. It offers prognostic value independent of traditional risk factors and other biomarkers like hs-CRP and NT-proBNP.
Area of Science:
- Cardiology
- Biomarkers
- Prognostics
Background:
- Stable coronary artery disease (CAD) patients managed in general practice require prognostic biomarkers.
- Elevated serum YKL-40 is a known short-term predictor of adverse outcomes in stable CAD.
- Current risk stratification may benefit from additional predictive markers.
Purpose of the Study:
- To evaluate if the inflammatory biomarker YKL-40 enhances long-term mortality prediction in stable CAD patients.
- To assess YKL-40's predictive power beyond established risk factors, high-sensitivity C-reactive protein (hs-CRP), and N-terminal-pro-B natriuretic peptide (NT-proBNP).
Main Methods:
- Serum YKL-40, hs-CRP, and NT-proBNP levels were measured in 4265 patients with stable CAD.
- A 6-year follow-up period was used to register all-cause mortality.
- Statistical analysis involved adjusting for clinical risk factors, medical treatments, and other biomarkers.
Main Results:
- During 6 years, 923 (21.1%) patients died.
- Serum YKL-40 was significantly associated with all-cause mortality after adjusting for risk factors (HR=1.55).
- YKL-40 remained a significant predictor even after additional adjustment for hs-CRP and NT-proBNP (HR=1.38).
Conclusions:
- Serum YKL-40 independently predicts long-term mortality in stable CAD patients.
- YKL-40 provides prognostic information beyond common risk factors, hs-CRP, and NT-proBNP.
- YKL-40 is a valuable biomarker for prognostication in stable CAD.
Objective:
We investigated whether the inflammatory biomarker YKL-40 could improve the long-term prediction of death made by common risk factors plus high-sensitivity C-reactive protein (hs-CRP) and N-terminal-pro-B natriuretic peptide (NT-proBNP) in patients with stable coronary artery disease (CAD).
Background:
Non-hospitalized CAD patients are usually followed in general practice. There is a need for identify biomarkers which could help to foresee the prognoses of these patients. Elevated serum YKL-40 is a short-term predictor for myocardial infarction, cardiovascular mortality and all-cause mortality in patients with stable CAD.
Methods:
Serum YKL-40, hs-CRP, and NT-proBNP were measured in 4265 (97.6%) of the 4372 patients with stable CAD included in the CLARICOR trial, and death was registered in a 6-years follow-up period.
Results:
The median serum YKL-40 was 110 μg/L [IQR=93], hs-CRP 2.8 mg/L [IQR=4.74], and NT-proBNP 203 ng/L [IQR=407]. During 6 years follow-up period 923 (21.1%) patients died. After adjustment for type of intervention, risk factors (age, sex, hypertension, diabetes, smoking status, and previous myocardial infarction) and medical treatment (diuretics, digoxin, and statin) serum YKL-40 (transformed as ln(max(82, YKL-40/μg/L)) was significantly associated with all-cause mortality [hazard ratio (HR)=1.55, 95% CI=1.39-1.73, p<0.001]. After additional adjustment for ln(hs-CRP) and ln(NT-proBNP) this was still true [HR=1.38, 95% CI=1.21-1.53, p<0.001].
Conclusions:
Serum YKL-40 is a predictor of long-term mortality in patients with stable CAD independent of common risk factors and ln(hs-CRP) and ln(NT-proBNP). Serum YKL-40 can be used for prognostication in these patients.
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