Evidence map›Paper›PMID 33651430›Full record

ArticleEuropean journal of heart failure2021

Machine learning based on biomarker profiles identifies distinct subgroups of heart failure with preserved ejection fraction.

Rebecca J Woolley, Daan Ceelen, Wouter Ouwerkerk, Jasper Tromp, Sylwia M Figarska, Stefan D Anker, Kenneth Dickstein, Gerasimos Filippatos, Faiez Zannad, Marco Metra and 6 more

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Article in European journal of heart failure, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 82 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

82 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  12. Artificial intelligence in heart failure.The Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology · 2026
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22 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

16 authors.

Rebecca J WoolleyDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Daan CeelenDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Wouter OuwerkerkNational Heart Centre Singapore, Singapore.
Jasper TrompDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Sylwia M FigarskaDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Stefan D AnkerDepartment of Cardiology (CVK) and Berlin Institute of Health Center for Regenerative Therapies (BCRT), Berlin, Germany.
Kenneth DicksteinUniversity of Bergen, Bergen, Norway.
Gerasimos FilippatosNational and Kapodistrian University of Athens, School of Medicine, Athens, Greece.
Faiez ZannadUniversite de Lorraine, Inserm, Centre d'Investigations Cliniques-1433 and F-CRIN INI CRCT, Nancy, France.
Marco MetraInstitute of Cardiology, ASST Spedali Civili di Brescia, and Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Brescia, Italy.
Leong NgDepartment of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, and NIHR Leicester Biomedical Research Centre, Leicester, UK.
Nilesh SamaniDepartment of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, and NIHR Leicester Biomedical Research Centre, Leicester, UK.
Dirk J van VeldhuisenDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Chim LangSchool of Medicine Centre for Cardiovascular and Lung Biology, Division of Medical Sciences, University of Dundee, Ninewells Hospital & Medical School, Dundee, UK.
Carolyn S LamDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.
Adriaan A VoorsDepartment of Cardiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThe lack of effective therapies for patients with heart failure with preserved ejection fraction (HFpEF) is often ascribed to the heterogeneity of patients with HFpEF. We aimed to identify distinct pathophysiologic clusters of HFpEF based on circulating biomarkers. METHODS AND

resultsWe performed an unsupervised cluster analysis using 363 biomarkers from 429 patients with HFpEF. Relative differences in expression profiles of the biomarkers between clusters were assessed and used for pathway over-representation analyses. We identified four distinct patient subgroups based on their biomarker profiles: cluster 1 with the highest prevalence of diabetes mellitus and renal disease; cluster 2 with oldest age and frequent age-related comorbidities; cluster 3 with youngest age, largest body size, least symptoms and lowest N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels; and cluster 4 with highest prevalence of ischaemic aetiology, smoking and chronic lung disease, most symptoms, as well as highest NT-proBNP and troponin levels. Over a median follow-up of 21 months, the occurrence of death or heart failure hospitalization was highest in clusters 1 and 4 (62.1% and 62.8%, respectively) and lowest in cluster 3 (25.6%). Pathway over-representation analyses revealed that the biomarker profile of patients in cluster 1 was associated with activation of inflammatory pathways while the biomarker profile of patients in cluster 4 was specifically associated with pathways implicated in cell proliferation regulation and cell survival.

conclusionUnsupervised cluster analysis based on biomarker profiles identified mutually exclusive subgroups of patients with HFpEF with distinct biomarker profiles, clinical characteristics and outcomes, suggesting different underlying pathophysiological pathways.

Indexed as

Heart FailureBiomarkersCluster AnalysisHumansMachine LearningNatriuretic Peptide, BrainPeptide FragmentsPrognosisStroke VolumeBiomarkersNatriuretic Peptide, BrainPeptide FragmentsCluster analysisHeart failureHeart failure with preserved ejection fractionMachine learning

Identifiers

PMID33651430
PMCPMC8360080

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.