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Siegbahn, Agneta
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Publications (10 of 248) Show all publications
Lind, L., Salihovic, S., Ganna, A., Sundström, J., Broeckling, C. D., Magnusson, P. K., . . . Arnlov, J. (2020). A Multi-Cohort Metabolomics Analysis Discloses Sphingomyelin (32:1) Levels to be Inversely Related to Incident Ischemic Stroke. Journal of Stroke & Cerebrovascular Diseases, 29(2), Article ID 104476.
Open this publication in new window or tab >>A Multi-Cohort Metabolomics Analysis Discloses Sphingomyelin (32:1) Levels to be Inversely Related to Incident Ischemic Stroke
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2020 (English)In: Journal of Stroke & Cerebrovascular Diseases, ISSN 1052-3057, E-ISSN 1532-8511, Vol. 29, no 2, article id 104476Article in journal (Refereed) Published
Abstract [en]

Background and Purpose:

To search for novel pathophysiological pathways related to ischemic stroke using a metabolomics approach.

Methods:

We identified 204 metabolites in plasma by liquid chromatography mass spectrometry in 3 independent population-based samples (TwinGene, Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) and Uppsala Longitudinal Study of Adult Men). TwinGene was used for discovery and the other 2 samples were meta-analyzed as replication. In PIVUS, traditional cardiovascular (CV) risk factors, multiple markers of subclinical CV disease, markers of coagulation/fibrinolysis were measured and analyzed in relation to top metabolites.

Results:

In TwinGene (177 incident cases, median follow-up 4.3 years), levels of 28 metabolites were associated with incident ischemic stroke at a false discover rate (FDR) of 5%. In the replication (together 194 incident cases, follow-up 10 and 12 years, respectively), only sphingomyelin (32:1) was significantly associated (HR.69 per SD change, 95% CI.57-0.83, P value = .00014; FDR <5%) when adjusted for systolic blood pressure, diabetes, smoking, low density lipoportein (LDL)- and high density lipoprotein (HDL), body mass index (BMI) and atrial fibrillation. In PIVUS, sphingomyelin (32:1) levels were significantly related to both LDL- and HDL-cholesterol in a positive fashion, and to serum triglycerides, BMI and diabetes in a negative fashion. Furthermore, sphingomyelin (32:1) levels were related to vasodilation in the forearm resistance vessels, and inversely to leukocyte count (P < .0069 and .0026, respectively).

Conclusions:

An inverse relationship between sphingomyelin (32:1) and incident ischemic stroke was identified, replicated, and characterized. A possible protective role for sphingomyelins in stroke development has to be further investigated in additional experimental and clinical studies.

Keywords
Epidemiology, metabolomics, stroke, risk factor
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-402618 (URN)10.1016/j.jstrokecerebrovasdis.2019.104476 (DOI)000505793800001 ()31806450 (PubMedID)
Funder
Swedish Research CouncilSwedish Heart Lung Foundation
Available from: 2020-01-17 Created: 2020-01-17 Last updated: 2020-01-17Bibliographically approved
Edén, D., Panagiotou, G., Mokhtari, D., Eriksson, J., Åberg, M. & Siegbahn, A. (2019). Adipocytes express tissue factor and FVII and are procoagulant in a TF/FVIIa-dependent manner. Upsala Journal of Medical Sciences, 124(3), 158-167
Open this publication in new window or tab >>Adipocytes express tissue factor and FVII and are procoagulant in a TF/FVIIa-dependent manner
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2019 (English)In: Upsala Journal of Medical Sciences, ISSN 0300-9734, E-ISSN 2000-1967, Vol. 124, no 3, p. 158-167Article in journal (Refereed) Published
Abstract [en]

Background: Tissue factor (TF) combined with its ligand FVII initiates blood coagulation and intracellular signaling. Obese and type 2 diabetic subjects have increased TF expression in their adipose tissue and an increased risk for thrombotic complications. Here we address the role of TF/FVII on adipocyte functions.

Materials and methods: Subcutaneous fat was obtained by means of needle aspiration from healthy volunteers, and adipocytes were isolated after collagenase digestion. 3T3-L1 fibroblasts kept in culture were differentiated into adipocytes by addition of IBMX, dexamethasone, rosiglitazone, and insulin to the media. Proteins and mRNA were analyzed by western blot and RT-PCR. Coagulation activity was determined by a colorimetric FX-assay. Lipolysis was measured as free glycerol using a colorimetric method. Glucose uptake was evaluated by scintillation counting of D-[U-C-14] glucose.

Results: In isolated human primary adipocytes we found expression of TF and FVII. TF expression was confirmed in 3T3-L1 adipocytes, and both cell types were found to be procoagulant in a TF/FVIIa-dependent manner. FXa was generated without FVIIa added to the coagulation assay, and active site-inhibited FVIIa blocked FXa formation, supporting our finding of FVII production by human primary adipocytes. There was no evidence for a role of TF in either lipolysis or glucose uptake in our experimental settings.

Conclusion: Human primary adipocytes express active TF and FVII, and the TF/FVIIa complex formed on the adipocyte surface can activate substrate FX. Whether the TF/FVIIa complex conveys signaling pathways leading to biological functions and has any biological activity in adipocytes beyond coagulation remains to be elucidated.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD, 2019
Keywords
Adipocytes, coagulation, FVII, lipolysis, tissue factor
National Category
Cardiac and Cardiovascular Systems Medicinal Chemistry
Identifiers
urn:nbn:se:uu:diva-396115 (URN)10.1080/03009734.2019.1645248 (DOI)000481057900001 ()31407948 (PubMedID)
Funder
Swedish Research CouncilSwedish Heart Lung FoundationErik, Karin och Gösta Selanders Foundation
Available from: 2019-10-31 Created: 2019-10-31 Last updated: 2019-12-19Bibliographically approved
Ueland, T., Åkerblom, A., Ghukasyan, T., Michelsen, A. E., Becker, R. C., Bertilsson, M., . . . Wallentin, L. (2019). Admission Levels of DKK1 (Dickkopf-1) Are Associated With Future Cardiovascular Death in Patients With Acute Coronary Syndromes. Arteriosclerosis, Thrombosis and Vascular Biology, 39(2), 294-302
Open this publication in new window or tab >>Admission Levels of DKK1 (Dickkopf-1) Are Associated With Future Cardiovascular Death in Patients With Acute Coronary Syndromes
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2019 (English)In: Arteriosclerosis, Thrombosis and Vascular Biology, ISSN 1079-5642, E-ISSN 1524-4636, Vol. 39, no 2, p. 294-302Article in journal (Refereed) Published
Abstract [en]

Objective- The Wnt/wingless signaling antagonist DKK1 (dickkopf-1) regulates platelet-mediated inflammation and may contribute to plaque destabilization. We hypothesized that DKK1 would be associated with cardiovascular outcomes.

Approach and Results- We determined DKK1 levels in serum samples obtained before randomization, at discharge, and 1 and 6 months in a subset of 5165 patients with acute coronary syndromes in the PLATO trial (Platelet Inhibition and Patient Outcomes; NCT00391872). The median (interquartile range) DKK1 concentrations were 0.61 (0.20-1.27) ng/mL at baseline and increased during follow-up. The hazard ratio (95% CIs) for the composite end point (cardiovascular death, nonprocedural spontaneous myocardial infarction, or stroke) during 1 year of follow-up, per 50% increase in baseline DKK1 concentration, was 1.06 (1.02-1.10), P=0.0011, and remained significant in fully adjusted analysis with 14 conventional clinical and demographic and 6 biochemical variables, including NT-proBNP (N-terminal pro-B-type natriuretic peptide), hs-TnT (high-sensitivity troponin T), and GDF-15 (growth differentiation factor 15; 1.05 [1.00-1.09]; P=0.028). This association was mainly driven by the association with cardiovascular death, where a gradual increase in event rates was observed with increasing quartiles of DKK1 (2.7%, 3.0%, 4.3%, and 5.0%) and remained significant and unmodified in fully adjusted analysis (hazard ratio, 1.10 [1.04-1.17]; P=0.002). Change in DKK1 and levels at 1 month were unrelated to outcomes. A modifying effect of ticagrelor on DKK1 discharge levels was observed but not associated with prognosis.

Conclusions- In patients with acute coronary syndromes treated with dual antiplatelet treatment, admission DKK1 levels were independently associated with a composite of cardiovascular death, myocardial infarction, or stroke and with cardiovascular death alone.

Keywords
acute coronary syndrome, blood platelets, follow-up studies, humans, stroke
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-374177 (URN)10.1161/ATVBAHA.118.311042 (DOI)000478870600022 ()30580572 (PubMedID)
Available from: 2019-01-18 Created: 2019-01-18 Last updated: 2019-09-30Bibliographically approved
Patel, R. S., Schmidt, A. F., Tragante, V., McCubrey, R. O., Holmes, M. V., Howe, L. J., . . . Asselbergs, F. W. (2019). Association of Chromosome 9p21 With Subsequent Coronary Heart Disease Events: A GENIUS-CHD Study of Individual Participant Data. Circulation: Genomic and Precision Medicine, 12(4), Article ID e002471.
Open this publication in new window or tab >>Association of Chromosome 9p21 With Subsequent Coronary Heart Disease Events: A GENIUS-CHD Study of Individual Participant Data
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2019 (English)In: Circulation: Genomic and Precision Medicine, ISSN 2574-8300, Vol. 12, no 4, article id e002471Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Genetic variation at chromosome 9p21 is a recognized risk factor for coronary heart disease (CHD). However, its effect on disease progression and subsequent events is unclear, raising questions about its value for stratification of residual risk.

METHODS: A variant at chromosome 9p21 (rs1333049) was tested for association with subsequent events during follow-up in 103 357 Europeans with established CHD at baseline from the GENIUS-CHD (Genetics of Subsequent Coronary Heart Disease) Consortium (73.1% male, mean age 62.9 years). The primary outcome, subsequent CHD death or myocardial infarction (CHD death/myocardial infarction), occurred in 13 040 of the 93 115 participants with available outcome data. Effect estimates were compared with case/control risk obtained from the CARDIoGRAMplusC4D consortium (Coronary Artery Disease Genome-wide Replication and Meta-analysis [CARDIoGRAM] plus The Coronary Artery Disease [C4D] Genetics) including 47 222 CHD cases and 122 264 controls free of CHD.

RESULTS: Meta-analyses revealed no significant association between chromosome 9p21 and the primary outcome of CHD death/myocardial infarction among those with established CHD at baseline (GENIUSCHD odds ratio, 1.02; 95% CI, 0.99-1.05). This contrasted with a strong association in CARDIoGRAMPlusC4D odds ratio 1.20; 95% CI, 1.18-1.22; P for interaction < 0.001 compared with the GENIUS-CHD estimate. Similarly, no clear associations were identified for additional subsequent outcomes, including all-cause death, although we found a modest positive association between chromosome 9p21 and subsequent revascularization (odds ratio, 1.07; 95% CI, 1.04-1.09).

CONCLUSIONS: In contrast to studies comparing individuals with CHD to disease-free controls, we found no clear association between genetic variation at chromosome 9p21 and risk of subsequent acute CHD events when all individuals had CHD at baseline. However, the association with subsequent revascularization may support the postulated mechanism of chromosome 9p21 for promoting atheroma development.

Keywords
chromosome, genetic, variation, myocardial infarction, risk factor, secondary prevention
National Category
Cardiac and Cardiovascular Systems Medical Genetics
Identifiers
urn:nbn:se:uu:diva-383874 (URN)10.1161/CIRCGEN.119.002471 (DOI)000466741600005 ()30897348 (PubMedID)
Funder
EU, FP7, Seventh Framework Programme, 201668EU, European Research Council, 294609EU, Horizon 2020, 01KL1802NIH (National Institute of Health)EU, Horizon 2020, 692145Wellcome trustEU, FP7, Seventh Framework Programme, 223004Forte, Swedish Research Council for Health, Working Life and Welfare
Available from: 2019-06-14 Created: 2019-06-14 Last updated: 2019-06-14Bibliographically approved
Andersen, T., Ueland, T., Ghukasyan Lakic, T., Åkerblom, A., Bertilsson, M., Aukrust, P., . . . Kontny, F. (2019). C-X-C Ligand 16 Is an Independent Predictor of Cardiovascular Death and Morbidity in Acute Coronary Syndromes. Arteriosclerosis, Thrombosis and Vascular Biology, 39(11), 2402-2410
Open this publication in new window or tab >>C-X-C Ligand 16 Is an Independent Predictor of Cardiovascular Death and Morbidity in Acute Coronary Syndromes
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2019 (English)In: Arteriosclerosis, Thrombosis and Vascular Biology, ISSN 1079-5642, E-ISSN 1524-4636, Vol. 39, no 11, p. 2402-2410Article in journal (Refereed) Published
Abstract [en]

Objective:

The chemokine CXCL16 (C-X-C motif ligand 16) is a scavenger receptor for OxLDL (oxidized low-density lipoproteins) and involved in inflammation at sites of atherosclerosis. This study aimed to investigate the association of CXCL16 with clinical outcome in patients with acute coronary syndrome.

Approach and Results:

Serial measurements of CXCL16 were performed in a subgroup of 5142 patients randomized in the PLATO trial (Platelet Inhibition and Patient Outcome). Associations between CXCL16 and a composite of cardiovascular death, spontaneous myocardial infarction or stroke, and the individual components were assessed by multivariable Cox regression analyses. The hazard ratio per 50% increase in admission levels of CXCL16 analyzed as continuous variable was 1.64 (95% CI, 1.44-1.88), P<0.0001. This association remained statistically significant after adjustment for randomized treatment, clinical variables, CRP (C-reactive protein), leukocytes, cystatin C, NT-proBNP (N-terminal pro-brain natriuretic peptide), troponin T, GDF-15 (growth differentiation factor 15), and other biomarkers; hazard ratio 1.23 (1.05-1.45), P=0.0126. The admission level of CXCL16 was independently associated with cardiovascular death (1.50 [1.17-1.92], P=0.0014) but not with ischemic events alone, in fully adjusted analyses. No statistically independent association was found between CXCL16 measured at 1 month, or change in CXCL16 from admission to 1 month, and clinical outcomes.

Conclusions:

In patients with acute coronary syndrome, admission level of CXCL16 is independently related to adverse clinical outcomes, mainly driven by an association to cardiovascular death. Thus, CXCL16 measurement may enhance risk stratification in patients with this condition.

Keywords
acute coronary syndrome, biomarkers, inflammation, risk factors
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-397674 (URN)10.1161/ATVBAHA.119.312633 (DOI)000494483700023 ()31554419 (PubMedID)
Funder
Swedish Foundation for Strategic Research
Available from: 2019-11-28 Created: 2019-11-28 Last updated: 2019-11-28Bibliographically approved
Christersson, C., Wallentin, L., Andersson, U., Alexander, J. H., Alings, M., De Caterina, R., . . . Siegbahn, A. (2019). Effect of apixaban compared with warfarin on coagulation markers in atrial fibrillation.. Heart, 105(3), 235-242
Open this publication in new window or tab >>Effect of apixaban compared with warfarin on coagulation markers in atrial fibrillation.
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2019 (English)In: Heart, ISSN 1355-6037, E-ISSN 1468-201X, Vol. 105, no 3, p. 235-242Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: Compare the effect of apixaban and warfarin on coagulation and primary haemostasis biomarkers in atrial fibrillation (AF).

METHODS: The biomarker substudy from the Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation trial included 4850 patients with AF randomised to treatment with apixaban or warfarin. Sixty per cent of patients used vitamin K antagonist (VKA) within 7 days before randomisation. Prothrombin fragment 1+2 (F1+2), D-dimer, soluble CD40 ligand (sCD40L) and von Willebrand factor (vWF) antigen were analysed at randomisation and after 2 months of study treatment.

RESULTS: In patients not on VKA treatment at randomisation, F1+2 and D-dimer levels were decreased by 25% and 23%, respectively, with apixaban, and by 59% and 38%, respectively, with warfarin (p<0.0001 for treatment differences for both). In patients on VKA at randomisation, F1+2 and D-dimer levels increased by 41% and 10%, respectively, with apixaban and decreased by 37% and 11%, respectively, with warfarin (p<0.0001 for treatment differences for both). sCD40L levels were slightly increased at 2 months, regardless of VKA or randomised treatment. Apixaban and warfarin also both reduced vWF antigen regardless of VKA treatment. The efficacy (stroke) and safety (bleeding) of apixaban compared with warfarin was similar irrespectively of biomarker levels at 2 months.

CONCLUSIONS: Treatment with apixaban compared with warfarin for stroke prevention in patients with AF was associated with less reduction in thrombin generation and fibrin turnover. This effect of apixaban could contribute to the clinical results where apixaban was superior to warfarin both in stroke prevention and in reducing bleeding risk.

TRIAL REGISTRATION NUMBER: NCT00412984.

Keywords
atrial fibrillation
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-374491 (URN)10.1136/heartjnl-2018-313351 (DOI)000459806200013 ()30209126 (PubMedID)
Available from: 2019-01-21 Created: 2019-01-21 Last updated: 2020-01-07Bibliographically approved
Åkerblom, A., Wojdyla, D., Steg, P. G., Wallentin, L., James, S., Budaj, A., . . . Becker, R. C. (2019). Prevalence and relevance of abnormal glucose metabolism in acute coronary syndromes: insights from the PLATelet inhibition and patient Outcomes (PLATO) trial. Journal of Thrombosis and Thrombolysis, 48(4), 563-569
Open this publication in new window or tab >>Prevalence and relevance of abnormal glucose metabolism in acute coronary syndromes: insights from the PLATelet inhibition and patient Outcomes (PLATO) trial
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2019 (English)In: Journal of Thrombosis and Thrombolysis, ISSN 0929-5305, E-ISSN 1573-742X, Vol. 48, no 4, p. 563-569Article in journal (Refereed) Published
Abstract [en]

Diabetes mellitus (DM) and abnormal glucose metabolism are associated with cardiovascular (CV) disease. We investigated the prevalence and prognostic importance of dysglycaemia in patients with acute coronary syndromes (ACS) in the PLATelet inhibition and patient Outcomes (PLATO) trial. Diabetes was defined as known diabetes or HbA1c >= 6.5% or non-fasting glucose >= 11.1 mmol/L on admission, prediabetes as HbA1c >= 5.7% but < 6.5%, and no diabetes as HbA1c < 5.7%. The primary endpoint was the composite of CV death, spontaneous myocardial infarction type 1 (sMI) or stroke at 12 months. Multivariable Cox regression models, adjusting for baseline characteristics, and biomarkers NT-proBNP and troponin I, were used to explore the association between glycaemia and outcome. On admission, 16,007 (86.1%) patients had HbA1c and/or glucose levels available and were subdivided into DM 38.5% (6160) (1501 patients had no previous DM diagnosis), prediabetes 38.8% (6210), and no DM 22.7% (3637). Kaplan Meier event rates at 12 months for CV death, sMI or stroke per subgroups were 14.5% (832), 9.0% (522), and 8.5% (293), respectively with multivariable adjusted HRs, versus no diabetes, for diabetes: 1.71 (1.50-1.95) and for prediabetes 1.03 (0.90-1.19). Corresponding event rates for CV death were 6.9% (391), 3.4% (195) and 3.0% (102), respectively, with adjusted HRs for patients with DM of: 1.92 (1.42-2.60) and for prediabetes 1.02 (0.79-1.32). Abnormal glucose metabolism is common in ACS patients, but only patients with definite DM have an increased CV risk, indicating that prediabetes is not immediately associated with worse CV outcomes.

Place, publisher, year, edition, pages
Springer, 2019
Keywords
Diabetes, Pre-diabetes, Hemoglobin A1C, Acute coronary syndromes, Myocardial infarction, Risk prediction
National Category
Endocrinology and Diabetes Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-399089 (URN)10.1007/s11239-019-01938-2 (DOI)000491548800005 ()31512201 (PubMedID)
Funder
AstraZeneca
Available from: 2019-12-16 Created: 2019-12-16 Last updated: 2019-12-16Bibliographically approved
Patel, R. S., Tragante, V., Schmidt, A. F., McCubrey, R. O., Holmes, M. V., Howe, L. J., . . . Asselbergs, F. W. (2019). Subsequent Event Risk in Individuals With Established Coronary Heart Disease: Design and Rationale of the GENIUS-CHD Consortium. Circulation: Genomic and Precision Medicine, 12(4), Article ID e002470.
Open this publication in new window or tab >>Subsequent Event Risk in Individuals With Established Coronary Heart Disease: Design and Rationale of the GENIUS-CHD Consortium
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2019 (English)In: Circulation: Genomic and Precision Medicine, ISSN 2574-8300, Vol. 12, no 4, article id e002470Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The Genetics of Subsequent Coronary Heart Disease (GENIUS-CHD) consortium was established to facilitate discovery and validation of genetic variants and biomarkers for risk of subsequent CHD events, in individuals with established CHD.

METHODS: The consortium currently includes 57 studies from 18 countries, recruiting 185 614 participants with either acute coronary syndrome, stable CHD, or a mixture of both at baseline. All studies collected biological samples and followed-up study participants prospectively for subsequent events.

RESULTS: Enrollment into the individual studies took place between 1985 to present day with a duration of follow-up ranging from 9 months to 15 years. Within each study, participants with CHD are predominantly of self-reported European descent (38%-100%), mostly male (44%-91%) with mean ages at recruitment ranging from 40 to 75 years. Initial feasibility analyses, using a federated analysis approach, yielded expected associations between age (hazard ratio, 1.15; 95% CI, 1.14-1.16) per 5-year increase, male sex (hazard ratio, 1.17; 95% CI, 1.13-1.21) and smoking (hazard ratio, 1.43; 95% CI, 1.35-1.51) with risk of subsequent CHD death or myocardial infarction and differing associations with other individual and composite cardiovascular endpoints.

CONCLUSIONS: GENIUS-CHD is a global collaboration seeking to elucidate genetic and nongenetic determinants of subsequent event risk in individuals with established CHD, to improve residual risk prediction and identify novel drug targets for secondary prevention. Initial analyses demonstrate the feasibility and reliability of a federated analysis approach. The consortium now plans to initiate and test novel hypotheses as well as supporting replication and validation analyses for other investigators.

Keywords
coronary artery disease, genetics, myocardial infarction, prognosis, secondary prevention
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-383875 (URN)10.1161/CIRCGEN.119.002470 (DOI)000466741600004 ()30896328 (PubMedID)
Funder
EU, FP7, Seventh Framework Programme, 201668EU, FP7, Seventh Framework Programme, 305739EU, European Research Council, 294609Swedish Research CouncilSwedish Foundation for Strategic Research EU, European Research Council, 294609EU, Horizon 2020, 01KL1802NIH (National Institute of Health), R0133169NIH (National Institute of Health), R01ES021801NIH (National Institute of Health), R01MD010358NIH (National Institute of Health), R01ES025786NIH (National Institute of Health), R01HL103866NIH (National Institute of Health), R01DK106000NIH (National Institute of Health), R01HL126827NIH (National Institute of Health), P20HL113452NIH (National Institute of Health), P01HL098055NIH (National Institute of Health), P01HL076491NIH (National Institute of Health), R01HL103931NIH (National Institute of Health), AG051633NIH (National Institute of Health), 5P01HL101398-02NIH (National Institute of Health), 1P20HL113451-01NIH (National Institute of Health), 1R56HL126558-01NIH (National Institute of Health), 1RF-1AG051633-01NIH (National Institute of Health), R01 NS064162-01NIH (National Institute of Health), R01 HL89650-01NIH (National Institute of Health), HL095479-01NIH (National Institute of Health), 1U10HL110302-01NIH (National Institute of Health), 1DP3DK094346-01NIH (National Institute of Health), 2P01HL086773-06A1EU, Horizon 2020, 692145Wellcome trust, 072960/Z/03/ZWellcome trust, 084726/Z/08/ZWellcome trust, 084727/Z/08/ZWellcome trust, 085475/Z/08/ZWellcome trust, 085475/B/08/ZSwedish Heart Lung FoundationThe Crafoord FoundationKnut and Alice Wallenberg FoundationEU, FP7, Seventh Framework Programme, 223004Forte, Swedish Research Council for Health, Working Life and WelfareNIH (National Institute of Health), R01 NR013396
Available from: 2019-06-12 Created: 2019-06-12 Last updated: 2019-06-12Bibliographically approved
Hijazi, Z., Oldgren, J., Lindbäck, J., Alexander, J. H., Connolly, S. J., Eikelboom, J. W., . . . Wallentin, L. (2018). A biomarker-based risk score to predict death in patients with atrial fibrillation: the ABC (age, biomarkers, clinical history) death risk score. European Heart Journal, 39(6), 477-485
Open this publication in new window or tab >>A biomarker-based risk score to predict death in patients with atrial fibrillation: the ABC (age, biomarkers, clinical history) death risk score
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2018 (English)In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 39, no 6, p. 477-485Article in journal (Refereed) Published
Abstract [en]

Aims: In atrial fibrillation (AF), mortality remains high despite effective anticoagulation. A model predicting the risk of death in these patients is currently not available. We developed and validated a risk score for death in anticoagulated patients with AF including both clinical information and biomarkers.

Methods and results: The new risk score was developed and internally validated in 14 611 patients with AF randomized to apixaban vs. warfarin for a median of 1.9 years. External validation was performed in 8548 patients with AF randomized to dabigatran vs. warfarin for 2.0 years. Biomarker samples were obtained at study entry. Variables significantly contributing to the prediction of all-cause mortality were assessed by Cox-regression. Each variable obtained a weight proportional to the model coefficients. There were 1047 all-cause deaths in the derivation and 594 in the validation cohort. The most important predictors of death were N-terminal pro B-type natriuretic peptide, troponin-T, growth differentiation factor-15, age, and heart failure, and these were included in the ABC (Age, Biomarkers, Clinical history)-death risk score. The score was well-calibrated and yielded higher c-indices than a model based on all clinical variables in both the derivation (0.74 vs. 0.68) and validation cohorts (0.74 vs. 0.67). The reduction in mortality with apixaban was most pronounced in patients with a high ABC-death score.

Conclusion: A new biomarker-based score for predicting risk of death in anticoagulated AF patients was developed, internally and externally validated, and well-calibrated in two large cohorts. The ABC-death risk score performed well and may contribute to overall risk assessment in AF.

Place, publisher, year, edition, pages
OXFORD UNIV PRESS, 2018
Keywords
Atrial fibrillation, Biomarkers, Mortality, NOAC, Oral anticoagulation, Risk score
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-348121 (URN)10.1093/eurheartj/ehx584 (DOI)000424876100015 ()29069359 (PubMedID)
Funder
Swedish Foundation for Strategic Research , RB13-0197Swedish Heart Lung Foundation, 20090183
Available from: 2018-04-11 Created: 2018-04-11 Last updated: 2019-01-23Bibliographically approved
Åberg, M., Edén, D. & Siegbahn, A. (2018). Activation of beta1-integrins and caveolin-1 by TF/FVIIa promotes cell survival. Paper presented at 5th Congress of the ESC-Council-on-Basic-Cardiovascular-Science on Frontiers in Cardio Vascular Biology, APR 20-22, 2018, Vienna, AUSTRIA. Cardiovascular Research, 114, S88-S88
Open this publication in new window or tab >>Activation of beta1-integrins and caveolin-1 by TF/FVIIa promotes cell survival
2018 (English)In: Cardiovascular Research, ISSN 0008-6363, E-ISSN 1755-3245, Vol. 114, p. S88-S88Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
OXFORD UNIV PRESS, 2018
National Category
Cardiac and Cardiovascular Systems
Identifiers
urn:nbn:se:uu:diva-357489 (URN)000430678500252 ()
Conference
5th Congress of the ESC-Council-on-Basic-Cardiovascular-Science on Frontiers in Cardio Vascular Biology, APR 20-22, 2018, Vienna, AUSTRIA
Available from: 2018-08-23 Created: 2018-08-23 Last updated: 2018-08-23Bibliographically approved
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