Growth differentiation factor-15 predicts mortality and morbidity after cardiac resynchronization therapy

Paul W. X. Foley, Berthold Stegemann, Kelvin Ng, Selvakumar Ramachandran, Anthony Proudler, Michael Frenneaux, Leong L. Ng, Francisco Leyva

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Abstract

The aim of this study was to determine whether growth differentiation factor-15 (GDF-15) predicts mortality and morbidity after cardiac resynchronization therapy (CRT). Growth differentiation factor-15, a transforming growth factor-beta-related cytokine which is up-regulated in cardiomyocytes via multiple stress pathways, predicts mortality in patients with heart failure treated pharmacologically.

Growth differentiation factor-15 was measured before and 360 days (median) after implantation in 158 patients with heart failure [age 68 +/- 11 years (mean +/- SD), left ventricular ejection fraction (LVEF) 23.1 +/- 9.8%, New York Class Association (NYHA) class III (n = 117) or IV (n = 41), and QRS 153.9 +/- 28.2 ms] undergoing CRT and followed up for a maximum of 5.4 years for events. In a stepwise Cox proportional hazards model with bootstrapping, adopting log GDF-15, log NT pro-BNP, LVEF, and NYHA class as independent variables, only log GDF-15 [hazard ratio (HR), 3.76; P = 0.0049] and log NT pro-BNP (HR, 2.12; P = 0.0171) remained in the final model. In the latter, the bias-corrected slope was 0.85, the optimism (O) was -0.06, and the c-statistic was 0.74, indicating excellent internal validity. In univariate analyses, log GDF-15 [HR, 5.31; 95% confidence interval (CI), 2.31-11.9; likelihood ratio (LR) chi(2) = 14.6; P < 0.0001], NT pro-BNP (HR, 2.79; 95% CI, 1.55-5.26; LR chi(2) = 10.4; P = 0.0004), and the combination of both biomarkers (HR, 7.03; 95% CI, 2.91-17.5; LR chi(2) = 19.1; P < 0.0001) emerged as significant predictors. The biomarker combination was associated with the highest LR chi(2) for all endpoints.

Pre-implant GDF-15 is a strong predictor of mortality and morbidity after CRT, independent of NT pro-BNP. The predictive value of these analytes is enhanced by combined measurement.

Original languageEnglish
Pages (from-to)2749-2757
Number of pages9
JournalEuropean Heart Journal
Volume30
Issue number22
DOIs
Publication statusPublished - Nov 2009

Keywords

  • growth differentiation factor-15
  • cardiac resynchronization therapy
  • heart failure
  • mortality
  • chronic heart-failure
  • acute coronary syndrome
  • factor-beta
  • prognostic utility
  • superfamily
  • survival
  • issues
  • member
  • model

Cite this

Foley, P. W. X., Stegemann, B., Ng, K., Ramachandran, S., Proudler, A., Frenneaux, M., Ng, L. L., & Leyva, F. (2009). Growth differentiation factor-15 predicts mortality and morbidity after cardiac resynchronization therapy. European Heart Journal, 30(22), 2749-2757. https://doi.org/10.1093/eurheartj/ehp300