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BACKGROUND Growth differentiation factor-15 (GDF-15) is a promising biomarker of cardiac remodeling. The purpose of this study was to explore the diagnostic value of plasma GDF-15 levels in different stages of heart failure (HF) and to assess the relationship with ventricular remodeling. MATERIAL AND METHODS We enrolled 219 HF patients from the Department of Cardiology in Tianjin Union Medical Center as the HF group and 32 healthy subjects as the control group. Circulating GDF-15, NT-proBNP, procollagen I C-terminal propeptide (PICP), and N-terminal procollagen III propeptide (PIIINP) levels were measured using ELISA. Associations between GDF-15 and clinical indicators in cardiac remodeling were assessed using receiver operating characteristic (ROC) curves and Spearman correlation. All the patients were followed up for 1 year. RESULTS The level of plasma GDF-15 in HF patients was higher than in the control group (P&lt;0.05) and increased with higher ACCF/AHA and NYHA classification (P&lt;0.05). Patients with HFrEF had higher GDF-15 levels compared to patients with HFmrEF (P&lt;0.05). GDF-15 and left ventricular mass index (LVMI) were significantly increased as early as the pre-clinical HF stage. Also, GDF-15 levels were positively correlated to LVMI (r=0.433, P&lt;0.05), PICP (r=0.378, P&lt;0.001) and PIIINP (r=0.382, P&lt;0.001). ROC curves were constructed and GDF-15 plus NT-proBNP (AUC=0.905, 95%CI: 0.868-0.942, P&lt;0.001) was superior to NT-proBNP (AUC=0.869, 95%CI: 0.825-0.913, P&lt;0.001) in identifying HF. GDF-15 levels did not predict prognosis after a 1-year follow-up period. CONCLUSIONS GDF-15 combined with NT-proBNP significantly improves the accuracy of diagnosing HF. Plasma GDF-15 levels can indirectly reflect the degree of cardiac remodeling and fibrosis.

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Additional Diagnostic Value of Growth Differentiation Factor-15 (GDF-15) to N-Terminal B-Type Natriuretic Peptide (NT-proBNP) in Patients with Different Stages of Heart Failure