Risk prediction of death and heart transplantation in adult patients with myocarditis
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ID: 316890
2026
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Abstract
Abstract Background and aims Identifying early risk predictors in myocarditis is clinically relevant, as patients’ outcomes may be very diverse. We aimed to explore predictors of death and heart transplant (HTx) in a large single-center cohort of adult patients with myocarditis using a machine learning (ML) technique. Materials and methods We retrospectively enrolled consecutive adult patients with biopsy-proven or clinically suspected myocarditis, collecting clinical, laboratory, and imaging data, both at diagnosis and during follow-up. A predictive model of death/HTx was developed using Random Forest (RF), ranking covariates according to their predictive accuracy. Results We included 938 patients (median age 36 years, 69% male) with clinically suspected (n=549) or biopsy-proven (n=389) myocarditis. During follow-up, 35 patients died, and 26 underwent HTx. The most important variables in predicting survival were NYHA class (variable importance, VIMP, 10%) LVEF (3.6%) and clinical presentation (2.5%) at diagnosis, histological type of myocarditis on endomyocardial biopsy (EMB)(2.9%), anti-endothelial cell antibodies (0.6%) and anti-nuclear antibodies (0.4%) positivity. Overall, the predictive accuracy of our RF model was good (89.2%, 95% C.I. 86.1-92.3). Conclusions Based on a ML approach, we found, with good predictive accuracy, that advanced NYHA class, reduced LVEF and heart failure at diagnosis, and giant cell myocarditis on EMB are predictors of worse prognosis in adult patients with myocarditis.
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| Authors | Anna Baritussio, Andrea Silvio Giordani, Chiara Merola, Giulia Lorenzoni, Cristina Vicenzetto, Federico Scognamiglio, Cristina Basso, S Rizzo, Monica De Gaspari, Elisa Carturan, Giuseppe Tarantini, S Iliceto, R Marcolongo, Darío Gregori, Alida L.P. Caforio |
| Journal | European Heart Journal Open |
| Year | 2026 |
| DOI |
10.1093/ehjopen/oeag104
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| URL | |
| Keywords | Keywords not found |
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