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High-sensitivity Cardiac Troponin T is a Useful Biomarker for Predicting the Prognosis of Patients with Systemic Sarcoidosis Regardless of Cardiac Involvement.
Internal Medicine 2023 March 16
Objective Cardiac involvement defines the prognosis for patients with systemic sarcoidosis. Despite advancements in techniques for diagnosing cardiac lesions, there remains significant room for improvement in cardiac screening and prognostic prediction. The present study therefore assessed the prognostic factors associated with cardiovascular events in patients with sarcoidosis. Methods We retrospectively studied 132 patients with systemic sarcoidosis and evaluated the clinical data obtained between 2009 and 2022. A Kaplan-Meier survival analysis and Cox proportional hazards models were used to evaluate the associations between cardiovascular events and prognostic factors. Results The median age of the patients at the diagnosis was 64.0 (55.0-71.0) years old. During a mean follow-up period of 6.3±3.2 years, 28 patients suffered from cardiovascular events. Patients in the event group had more severe heart failure symptoms, more frequent ventricular tachycardia, higher serum high-sensitivity cardiac troponin T (hs-cTnT) values [0.025 (0.017-0.044) vs. 0.011 (0.007-0.019) ng/mL, p<0.001], and lower left ventricular ejection fraction values than those in the non-event group. These trends were observed even if the patients were not diagnosed with cardiac involvement at the time of enrollment. A multivariate analysis revealed that hs-cTnT was an independent biomarker for the prediction of cardiac events (hs-cTnT >0.014 ng/mL: HR: 7.31, 95% confidence interval: 2.20 to 24.28, p<0.001). Conclusion Hs-cTnT is a useful biomarker for predicting cardiovascular events in patients with sarcoidosis, even if cardiac involvement is not detected at the initial evaluation.
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