Projects per year
Abstract
Background: Arterial hypertension is a major cardiovascular risk factor. Identification of secondary hypertension in its various forms is key to preventing and targeting treatment of cardiovascular complications. Simplified diagnostic tests are urgently required to distinguish primary and secondary hypertension to address the current underdiagnosis of the latter.
Methods: This study uses Machine Learning (ML) to classify subtypes of endocrine hypertension (EHT) in a large cohort of hypertensive patients using multidimensional omics analysis of plasma and urine samples. We measured 409 multi-omics (MOmics) features including plasma miRNAs (PmiRNA: 173), plasma catechol O-methylated metabolites (PMetas: 4), plasma steroids (PSteroids: 16), urinary steroid metabolites (USteroids: 27), and plasma small metabolites (PSmallMB: 189) in primary hypertension (PHT) patients, EHT patients with either primary aldosteronism (PA), pheochromocytoma/functional paraganglioma (PPGL) or Cushing syndrome (CS) and normotensive volunteers (NV). Biomarker discovery involved selection of disease combination, outlier handling, feature reduction, 8 ML classifiers, class balancing and consideration of different age- and sex-based scenarios. Classifications were evaluated using balanced accuracy, sensitivity, specificity, AUC, F1, and Kappa score.
Findings: Complete clinical and biological datasets were generated from 307 subjects (PA=113, PPGL=88, CS=41 and PHT=112). The random forest classifier provided ∼92% balanced accuracy (∼11% improvement on the best mono-omics classifier), with 96% specificity and 0.95 AUC to distinguish one of the four conditions in multi-class ALL-ALL comparisons (PPGL vs PA vs CS vs PHT) on an unseen test set, using 57 MOmics features. For discrimination of EHT (PA + PPGL + CS) vs PHT, the simple logistic classifier achieved 0.96 AUC with 90% sensitivity, and ∼86% specificity, using 37 MOmics features. One PmiRNA (hsa-miR-15a-5p) and two PSmallMB (C9 and PC ae C38:1) features were found to be most discriminating for all disease combinations. Overall, the MOmics-based classifiers were able to provide better classification performance in comparison to mono-omics classifiers.
Interpretation: We have developed a ML pipeline to distinguish different EHT subtypes from PHT using multi-omics data. This innovative approach to stratification is an advancement towards the development of a diagnostic tool for EHT patients, significantly increasing testing throughput and accelerating administration of appropriate treatment.
Original language | English |
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Article number | 104276 |
Number of pages | 16 |
Journal | EBioMedicine |
Volume | 84 |
Early online date | 27 Sept 2022 |
DOIs | |
Publication status | Published - Oct 2022 |
Keywords
- Biomarkers
- Cushing syndrome
- Hypertension
- Machine learning
- Multi-omics
- Pheochromocytoma/paraganglioma
- Primary aldosteronism
ASJC Scopus subject areas
- General Biochemistry,Genetics and Molecular Biology
Fingerprint
Dive into the research topics of 'Machine learning for classification of hypertension subtypes using multi-omics: A multi-centre, retrospective, data-driven study'. Together they form a unique fingerprint.Projects
- 1 Finished
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Omics-Based Strategies for Improved Diagnosis and Treatment of Endocrine Hypertension (ENSAT-HT) (Joint with Inserm, University of Torino, University of Padua, University of Glasgow, University of Birmingham, Radboud University Medical Centre, SleekIT Limited and Inserm Transfert)
Connell, J. (Investigator), Doney, A. (Investigator), Jefferson, E. (Investigator) & Zhou, K. (Investigator)
COMMISSION OF THE EUROPEAN COMMUNITIES
1/05/15 → 31/12/21
Project: Research
Press/Media
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Researchers develop new system to classify endocrine hypertension
Reel, P., Reel, S. & Jefferson, E.
12/10/22
1 item of Media coverage
Press/Media: Research
Prizes
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ENSAT Scientific Award
Reel, P. (Recipient) & Reel, S. (Recipient), 2023
Prize: Prize (including medals and awards)