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Background The independent prognostic value of troponin and other biomarker elevation among patients with coronavirus disease 2019 (COVID‐19) are unclear. We sought to characterize biomarker levels in patients hospitalized with COVID‐19 and develop and validate a mortality risk score. Methods and Results An observational cohort study of 1053 patients with COVID‐19 was conducted. Patients with all of the following biomarkers measured—troponin‐I, B‐type natriuretic peptide, C‐reactive protein, ferritin, andd ‐dimer (n=446) —were identified. Maximum levels for each biomarker were recorded. The primary end point was 30‐day in‐hospital mortality. Multivariable logistic regression was used to construct a mortality risk score. Validation of the risk score was performed using an independent patient cohort (n=440). Mean age of patients was 65.0±15.2 years and 65.3% were men. Overall, 444 (99.6%) had elevation of any biomarker. Among tested biomarkers, troponin‐I ≥0.34 ng/mL was the only independent predictor of 30‐day mortality (adjusted odds ratio, 4.38;P &lt;0.001). Patients with a mortality score using hypoxia on presentation, age, and troponin‐I elevation, age (HA2 T2 ) ≥3 had a 30‐day mortality of 43.7% while those with a score &lt;3 had mortality of 5.9%. Area under the receiver operating characteristic curve of the HA2 T2 score was 0.834 for the derivation cohort and 0.784 for the validation cohort.Conclusions Elevated troponin and other biomarker levels are commonly seen in patients hospitalized with COVID‐19. High troponin levels are a potent predictor of 30‐day in‐hospital mortality. A simple risk score can stratify patients at risk for COVID‐19–associated mortality.

journal of the american heart association. cardiovascular and cerebrovascular disease

Troponin and Other Biomarker Levels and Outcomes Among Patients Hospitalized With COVID‐19: Derivation and Validation of the HA <sub>2</sub> T <sub>2</sub> COVID‐19 Mortality Risk Score

Troponin and Other Biomarker Levels and Outcomes Among Patients Hospitalized With COVID‐19: Derivation and Validation of the HA 2 T 2 COVID‐19 Mortality Risk Score

Troponin and Other Biomarker Levels and Outcomes Among Patients Hospitalized With COVID‐19: Derivation and Validation of the HA ₂ T ₂ COVID‐19 Mortality Risk Score