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Circulating levels of ST2 are associated with myocardial injury, left ventricular function and future adverse clinical events in patients with ST-elevation myocardial infarction.

Session Non-troponin biomarkers in acute coronary syndromes

Speaker Jan Eritsland

Event : ESC Congress 2019

  • Topic : coronary artery disease, acute coronary syndromes, acute cardiac care
  • Sub-topic : Acute Coronary Syndromes: Inflammation
  • Session type : Abstract Sessions

Authors : C Shetelig (Oslo,NO), T Ueland (Oslo,NO), S Limalanathan (Oslo,NO), P Hoffmann (Oslo,NO), P Aukrust (Oslo,NO), A Yndestad (Oslo,NO), I Seljeflot (Oslo,NO), J Eritsland (Oslo,NO), GØ Andersen (Oslo,NO)

Authors:
C Shetelig1 , T Ueland2 , S Limalanathan3 , P Hoffmann1 , P Aukrust2 , A Yndestad2 , I Seljeflot1 , J Eritsland1 , GØ Andersen1 , 1Oslo University Hospital, Ulleval, Department of Cardiology - Oslo - Norway , 2Oslo University Hospital - Oslo - Norway , 3Gardermoen Heart Center - Oslo - Norway ,

Citation:

Background: Soluble ST2, a member of the IL-1 receptor family, seems to be associated with adverse outcome in acute myocardial infarction and heart failure (HF), and is suggested to be involved in left ventricular (LV) remodelling.
Purpose: To elucidate a possible role of ST2 in LV injury, remodelling and prognosis in ST-elevation myocardial infarction (STEMI) patients. The main objectives of the study were to investigate whether circulating ST2 levels were associated with infarct size, LV function, adverse remodeling and clinical outcome in a cohort of patients with STEMI.
Methods: 270 patients with clinically stable first-time STEMI treated with primary percutaneous coronary intervention (PCI) were included. Blood samples were drawn before and immediately after the PCI procedure, at day 1 (median 18.3 hours after PCI) and after 4 months. Cardiac magnetic resonance (CMR) was performed in the acute phase and after 4 months. Clinical events and all-cause mortality were registered during 12 months’ and 70 months’ follow-up, respectively. A composite endpoint was defined as death, MI, unscheduled revascularisation >3 months after the index infarction, rehospitalisation for HF or stroke. Associations between ST2 and CMR parameters and clinical events were evaluated with linear regression and logistic regression, respectively.
Results: There was a significant increase in ST2 levels from the PCI procedure to day 1 with a subsequent decline from day 1 to 4 months in the POSTEMI cohort. Patients with high ST2 levels (>median) at all sampling points during hospitalisation had significantly larger infarct size, lower myocardial salvage, lower LVEF, larger increase in EDV and higher frequency of MVO. After adjustment for relevant clinical variables, peak CRP and peak troponin T, ST2 measured at day 1 remained associated with infarct size (ß 2.0 per SD of ST2, p<0.001) and LVEF (ß -1.8 per SD of ST2, p=0.02) at 4 months. High levels of ST2 measured at day 1 (>75th percentile) were associated with increased risk of having an adverse clinical event during the first year and with long-term all-cause mortality (Figure). High levels of ST2 measured in a stable phase 4 months after STEMI were also associated with an increased risk of all-cause mortality (Figure).
Conclusions: High levels of ST2 in STEMI patients were associated with large infarct size, impaired recovery of LV function, and adverse clinical outcome in patients with STEMI. ST2 measured 4 months after STEMI remained associated with all-cause mortality.

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