Concurrent evaluation of novel cardiac biomarkers in acute coronary syndrome: Myeloperoxidase and soluble CD40 ligand and the risk of recurrent ischaemic events in TACTICS-TIMI 18

  • Morrow D
  • Sabatine M
  • Brennan M
 et al. 
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AIMS: We investigated the prognostic performance of myeloperoxidase (MPO), and soluble CD40 ligand (sCD40L) along with B-type natriuretic peptide (BNP), high-sensitivity C-reactive protein (hsCRP), and cardiac troponin I (cTnI) for non-fatal recurrent ischaemic events in non-ST elevation acute coronary syndrome (ACS). METHODS AND RESULTS: We measured plasma MPO and sCD40L in 1524 patients with ACS treated with tirofiban and randomized to early invasive vs. conservative management in the TACTICS-TIMI 18 trial who survived to 180 days. Patients with elevated baseline MPO (>884 pM) were at higher risk of non-fatal myocardial infarction or rehospitalization for ACS at 30 days (9.3 vs. 4.6%, P < 0.001). In contrast, no difference was observed with higher sCD40L (>989 pg/mL, 7.6 vs. 6.3%, P = 0.31). MPO remained associated with recurrent ischaemic events after adjustment for age, ST-deviation, diabetes, prior coronary artery disease, heart failure, cTnI, hsCRP, and sCD40L (OR 2.10; 95% CI 1.36-3.23, P = 0.001). This association was attenuated by 180 days (OR 1.26; 0.95-1.68). Stratification using baseline MPO, BNP, and cTnI identified a >3-fold gradient of risk. CONCLUSION: MPO adds to BNP and cTnI for short-term risk assessment for recurrent ischaemic events in non-ST elevation ACS. sCD40L was not associated with risk in this population treated with a platelet GPIIb/IIIa receptor antagonist.

Author-supplied keywords

  • Biomarkers
  • Myocardial infarction
  • Prognosis
  • Unstable angina

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  • David A. Morrow

  • Marc S. Sabatine

  • Marie Luise Brennan

  • James A. De Lemos

  • Sabina A. Murphy

  • Christian T. Ruff

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