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Endocrine Abstracts (2024) 99 RC11.4 | DOI: 10.1530/endoabs.99.RC11.4

1Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK; 2NIHR Birmingham Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; 3Medical Research Council Laboratory of Medical Sciences, London, UK; 4Endocrinology and Metabolism Unit, Division of Internal Medicine, Faculty of Medicine, Prince of Songkla University, Thailand; 5Bernoulli Institute for Mathematics, Computer Science and Artificial Intelligence, University of Groningen, Groningen, the Netherlands; 6School of Computer Science, University of Birmingham, Birmingham B15 2TT, United Kingdom; 7Université Paris Cité, PARCC, INSERM, F-75006 Paris, France; 8Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Unité Hypertension artérielle, Paris, France; 9Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Centre d’Investigations Cliniques 9201, Paris, France; 10Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Service de Génétique, F-75015 Paris, France; 11Division of Internal Medicine and Hypertension Unit, Department of Medical Sciences, University of Torino, Italy; 12Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Munich, Germany; 13Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; 14School of Cardiovascular and Metabolic Health, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK; 15Department of Medicine III, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany; 16UOC Endocrinologia, Dipartimento di Medicina DIMED, Azienda Ospedaliera-Università di Padova, Padua, Italy; 17Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, UniversitätsSpital Zürich (USZ) und Universität Zürich (UZH), Zurich, Switzerland; 18Department of Hypertension, National Institute of Cardiology, Warsaw, Poland; 19Department of Endocrinology, French Reference Center for Rare Adrenal Disorders, Hôpital Cochin, Université Paris Cité, Institut Cochin, Inserm U1016, CNRS UMR8104, F-75014, Paris, France; 20The Discipline of Pharmacology and Therapeutics, School of Medicine, National University of Ireland 33 Galway, Ireland; 21Internal & Emergency Medicine- ESH Specialized Hypertension Center, Department of Medicine-DIMED, University of Padova, Padua, Italy; 22Université Paris Cité, PARCC, INSERM, F-75006 Paris, France; Service de Génétique, Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France; 23Institute of Applied Health Research, University of Birmingham, Birmingham B15 2TT, United Kingdom; 24Centre for Systems Modelling and Quantitative Biomedicine, University of Birmingham, Birmingham, UK; 25Institute of Clinical Sciences, Imperial College London, London, UK


Background: Hypertension affects more than 30% of the adult population worldwide and is a major cardiovascular risk factor. Identifying secondary causes of hypertension is key to offering targeted treatments and mitigating adverse health outcomes. We tested the performance of urine steroid metabolomics (USM), the computational analysis of 24-hour urine steroid metabolome data by machine learning, for diagnosing endocrine forms of hypertension.

Methods: 1400 hypertensive adults with and without endocrine causes were recruited through the ENS@T-HT EU-funded Horizon 2020 research and innovation project; of these, 351 and 1049 were collected retrospectively and prospectively, respectively. Liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based multi-steroid profiling was used to quantify the excretion of 27 steroid metabolites in 24-hour urine samples. The prospective cohort underwent standardised measurement of the aldosterone-renin-ratio (ARR) to screen for primary aldosteronism (PA). Data were analysed by generalised matrix learning vector quantisation, a prototype-based algorithm of supervised machine learning, using the retrospective cohort (RC) for training and the prospective cohort (PC) for validation.

Results: We included 610 patients with PA (110 RC, 500 PC), 126 with phaeochromocytoma-paraganglioma (PPGL; 82 RC, 44 PC), 83 with Cushing’s syndrome (CS; 48 RC, 35 PC), and 581 with primary hypertension (PHT; 111 RC, 470 PC). USM demonstrated high accuracy (area under the receiver-operating characteristics curve [AUC-ROC] 0.93) in identifying CS cases, which showed higher urinary excretion of glucocorticoid and glucocorticoid precursor metabolites. USM yielded moderate accuracy (AUC-ROC 0.73) in differentiating PHT from PA. However, the performance improved considerably (AUC-ROC 0.87) when comparing PA cases to low-renin PHT (n=235), with the major aldosterone metabolite – 3α,5β-tetrahydroaldosterone – being the most discriminatory. Within the prospective cohort, USM had similar accuracy to the ARR in differentiating PHT from PA (AUC-ROC 0.87 and 0.88, respectively). The performance improved when combining USM results with renin alone (AUC-ROC 0.90) or the ARR (AUC-ROC 0.93). Expectedly, USM could not reliably differentiate PHT from PPGL (AUC-ROC 0.57).

Conclusions: Urine steroid metabolomics is a non-invasive candidate test for accurately diagnosing hypertension secondary to cortisol and aldosterone excess and can improve diagnosis and delivery of appropriate treatment in affected individuals.

Volume 99

26th European Congress of Endocrinology

Stockholm, Sweden
11 May 2024 - 14 May 2024

European Society of Endocrinology 

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