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Sökning: WFRF:(Steg Philippe Gabriel) > (2015-2019) > (2016) > Wallentin Lars

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1.
  • Bui, An H., et al. (författare)
  • Relationship Between Early and Late Nonsustained Ventricular Tachycardia and Cardiovascular Death in Patients With Acute Coronary Syndrome in the Platelet Inhibition and Patient Outcomes (PLATO) Trial
  • 2016
  • Ingår i: Circulation. - 1941-3149 .- 1941-3084. ; 9:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Background- Nonsustained ventricular tachycardia (NSVT) is common after acute coronary syndrome (ACS) and a marker of increased risk of arrhythmogenic death. However, the prognostic significance of NSVT when evaluated with other contemporary risk markers and at later time points after ACS remains uncertain. Methods and Results- In the Platelet Inhibition and Patient Outcomes (PLATO) trial, continuous ECGs were performed during the first 7 days after ACS (n=2866) and repeated for another 7 days at day 30 (n=1991). Median follow-up was 1 year. There was a time-varying interaction between NSVT and cardiovascular death such that NSVT was significantly associated with increased risk within the first 30 days after randomization (22/999 [2.2%] versus 16/1825 [0.9%]; adjusted hazard ratio, 2.84; 95% confidence interval, 1.39-5.79; P=0.004) but not after 30 days (28/929 [3.0%] versus 42/1734 [2.4%]; P=0.71). Detection of NSVT during the convalescent phase (n=428/1991; 21.5%) was also associated with an increased risk of cardiovascular death, and was most marked within the first 2 months after detection (1.9% versus 0.3%; adjusted hazard ratio, 5.48; 95% confidence interval, 1.07-28.20; P=0.01), and then decreasing over time such that the relationship was no longer significant by approximate to 5 months after ACS. Conclusions- NSVT occurred frequently during the acute and convalescent phases of ACS. The risk of cardiovascular death associated with NSVT was the greatest during the first 30 days after presentation; however, patients with NSVT detected during the convalescent phase were also at a significantly increased risk of cardiovascular death that persisted for an additional several months after the index event.
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2.
  • Hagström, Emil, et al. (författare)
  • Growth differentiation factor-15 level predicts major bleeding and cardiovascular events in patients with acute coronary syndromes : results from the PLATO study
  • 2016
  • Ingår i: European Heart Journal. - : Oxford University Press (OUP). - 0195-668X .- 1522-9645. ; 37:16, s. 1325-1333
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims Growth differentiation factor-15 (GDF-15) predicts death and composite cardiovascular (CV) events in patients with acute coronary syndrome (ACS). We investigated the independent associations between GDF-15 levels and major bleeding, the extent of coronary lesions and individual CV events in patients with ACS. Methods and results Growth differentiation factor-15 was analysed at baseline (n = 16 876) in patients with ACS randomized to ticagrelor or clopidogrel in the PLATO (PLATelet inhibition and patient Outcomes) trial. Growth differentiation factor-15 levels were related to extent of coronary artery disease (CAD) and to all types of non-coronary artery bypass grafting (CABG)-related major bleeding, spontaneous myocardial infarction (MI), stroke, and death during 12-month follow-up. In Cox proportional hazards models adjusting for established risk factors for CV disease and prognostic biomarkers (N-terminal pro B-type natriuretic peptide, cystatin C, high-sensitive C-reactive protein, and high-sensitive troponin T), 1 SD increase in ln GDF-15 was associated with increased risk of major bleeding with a hazard ratio (HR) 1.37 (95% confidence interval: 1.25-1.51) and with a similar increase in risk across different bleeding locations. For the same increase in ln GDF-15, the HR for the composite of CV death, spontaneous MI, and stroke was 1.29 (1.21-1.37), CV death 1.41 (1.30-1.53), all-cause death 1.41 (1.31-1.53), spontaneous MI 1.15 (1.05-1.26), and stroke 1.19 (1.01-1.42). The C-statistic improved for the prediction of CV death and non-CABG-related major bleeding when adding GDF-15 to established risk factors. Conclusions In patients with ACS, higher levels of GDF-15 are associated with raised risks of all types of major non-CABG-related bleeding, spontaneous MI, and stroke as well as CV and total mortality and seem to improve risk stratification for CV-mortality and major bleeding beyond established risk factors.
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3.
  • Johansson, Åsa, et al. (författare)
  • Genome-wide association and Mendelian randomization study of NT-proBNP in patients with acute coronary syndrome
  • 2016
  • Ingår i: Human Molecular Genetics. - : Oxford University Press (OUP). - 0964-6906 .- 1460-2083. ; 25:7, s. 1447-1456
  • Tidskriftsartikel (refereegranskat)abstract
    • N-terminal pro-B-type natriuretic peptide (NT-proBNP) is a strong predictor of mortality in coronary artery disease and is widely employed as a prognostic biomarker. However, a causal relationship between NT-proBNP and clinical endpoints has not been established. We have performed a genome-wide association and Mendelian randomization study of NT-proBNP. We used a discovery set of 3740 patients from the PLATelet inhibition and patient Outcomes (PLATO) trial, which enrolled 18 624 patients with acute coronary syndrome (ACS). A further set of 5492 patients, from the same trial, was used for replication. Genetic variants at two novel loci (SLC39A8 and POC1B/GALNT4) were associated with NT-proBNP levels and replicated together with the previously known NPPB locus. The most significant SNP (rs198389, pooled P = 1.07 x 10(-15)) in NPPB interrupts an E-box consensus motif in the gene promoter. The association in SLC39A8 is driven by a deleterious variant (rs13107325, pooled P = 5.99 x 10(-10)), whereas the most significant SNP in POC1B/GALNT4 (rs11105306, pooled P = 1.02 x 10(-16)) is intronic. The SLC39A8 SNP was associated with higher risk of cardiovascular (CV) death (HR = 1.39, 95% CI: 1.08-1.79, P = 0.0095), but the other loci were not associated with clinical endpoints. We have identified two novel loci to be associated with NT-proBNP in patients with ACS. Only the SLC39A8 variant, but not the NPPB variant, was associated with a clinical endpoint. Due to pleotropic effects of SLC39A8, these results do not suggest that NT-proBNP levels have a direct effect on mortality in ACS patients. PLATO Clinical Trial Registration: ; NCT00391872.
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5.
  • Velders, Matthijs A., et al. (författare)
  • Safety and efficacy of ticagrelor and clopidogrel in primary percutaneous coronary intervention
  • 2016
  • Ingår i: Heart. - : BMJ. - 1355-6037 .- 1468-201X. ; 102:8, s. 617-625
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective: The effects of ticagrelor in the subpopulation of patients with ST-elevation myocardial infarction (STEMI) were consistent with those observed in the overall Platelet Inhibition and Patient Outcomes (PLATO) study. However, this subgroup included patients initially or ultimately treated conservatively. The aim of this study is to compare treatment using ticagrelor with treatment using clopidogrel in patients with STEMI undergoing primary percutaneous coronary intervention (PCI).Methods: This post-hoc subgroup analysis compared ticagrelor with clopidogrel in 4949 PLATO patients with STEMI that were treated with primary PCI within 12h of admission. The primary endpoint was cardiovascular death, myocardial infarction or stroke. The safety endpoint consisted of any major bleeding. Secondary endpoints included stent thrombosis. The analysis was not adequately powered to establish significance of any treatment effects.Results: During a median of 286days, the primary endpoint occurred in 7.9% of ticagrelor-treated patients versus 8.6% of clopidogrel-treated patients (HR 0.91, 95% CI 0.75 to 1.12, p=0.38). Major bleeding occurred in 6.7% in ticagrelor-treated patients versus 6.8% of clopidogrel-treated patients (HR 0.97, 95% CI 0.77 to 1.22, p=0.79). No interactions were observed for the treatment effect of ticagrelor versus clopidogrel on the primary efficacy (p=0.40) and primary safety endpoints (p=0.15) as compared with the full PLATO population. Treatment with ticagrelor versus clopidogrel reduced the occurrence of definite stent thrombosis (HR 0.58, 95% CI 0.37 to 0.89, p=0.013).Conclusions: In the subset of patients with STEMI treated with primary PCI, ticagrelor compared with clopidogrel was safe, and efficacy outcomes were consistent with the overall PLATO trial.
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6.
  • Wallentin, Lars, et al. (författare)
  • Lipoprotein-Associated Phospholipase A(2) Activity Is a Marker of Risk But Not a Useful Target for Treatment in Patients With Stable Coronary Heart Disease
  • 2016
  • Ingår i: Journal of the American Heart Association. - 2047-9980 .- 2047-9980. ; 5:6
  • Tidskriftsartikel (refereegranskat)abstract
    • Background - We evaluated lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) activity in patients with stable coronary heart disease before and during treatment with darapladib, a selective Lp-PLA(2) inhibitor, in relation to outcomes and the effects of darapladib in the STABILITY trial.Methods and Results - Plasma Lp-PLA(2) activity was determined at baseline (n=14 500); at 1 month (n=13 709); serially (n=100) at 3, 6, and 18 months; and at the end of treatment. Adjusted Cox regression models evaluated associations between Lp-PLA(2) activity levels and outcomes. At baseline, the median Lp-PLA(2) level was 172.4 mu mol/min per liter (interquartile range 143.1-204.2 mu mol/min per liter). Comparing the highest and lowest Lp-PLA(2) quartile groups, the hazard ratios were 1.50 (95% CI 1.23-1.82) for the primary composite end point (cardiovascular death, myocardial infarction, or stroke), 1.95 (95% CI 1.29-2.93) for hospitalization for heart failure, 1.42 (1.07-1.89) for cardiovascular death, and 1.37 (1.03-1.81) for myocardial infarction after adjustment for baseline characteristics, standard laboratory variables, and other prognostic biomarkers. Treatment with darapladib led to a approximate to 65% persistent reduction in median Lp-PLA(2) activity. There were no associations between on-treatment Lp-PLA(2) activity or changes of Lp-PLA(2) activity and outcomes, and there were no significant interactions between baseline and on-treatment Lp-PLA(2) activity or changes in Lp-PLA(2) activity levels and the effects of darapladib on outcomes.Conclusions - Although high Lp-PLA(2) activity was associated with increased risk of cardiovascular events, pharmacological lowering of Lp-PLA(2) activity by approximate to 65% did not significantly reduce cardiovascular events in patients with stable coronary heart disease, regardless of the baseline level or the magnitude of change of Lp-PLA(2) activity.
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