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Clinical Trial Summary

Myocarditis promotes the occurrence of serious cardiac arrhythmias and conduction disorders which may lead to sudden cardiac death, the need for catheter ablation of arrhythmia or implantation of a cardioverter-defibrillator or pacemaker. The aim of the study is to fill the evidence gap regarding the type and burden of arrhythmias in patients with myocarditis and their correlation with clinical parameters, biomarkers and additional tests. During a multi-center observational study, patients will be subjected to prolonged ECG monitoring. As a result, a risk scale will be created that can facilitate the identification of patients with an increased risk of arrhythmia and further specifying recommendations for therapeutic management.

Clinical Trial Description

Myocarditis is a serious social problem, usually affecting young or middle-aged people. Making of the diagnosis of myocarditis, due to the varied course of the disease, is a significant challenge, therefore clinical suspicion of myocarditis is based on symptoms and abnormalities in additional tests (ECG, echocardiography, magnetic resonance of the heart, biomarkers), which should be confirmed by cardiac biopsy. Despite the fact that in the majority of patients myocarditis occurs in a mild and uncomplicated manner, in some patients the inflammatory process progresses leading to dilated cardiomyopathy, end-stage heart failure and often to the need for heart transplantation. Myocarditis also promotes the occurrence of severe arrhythmias and conduction which may lead to sudden cardiac death (myocarditis is confirmed in autopsy even in 2-42% of cases), the need for percutaneous ablation of arrhythmia, cardioverter-defibrillator implantation or cardiac stimulator.

In order to better identify the causes and improve the diagnosis and treatment of myocarditis, new data are needed including biomarkers (including biochemical, genetic, immunohistochemical biomarkers) responsible for the process of necrosis, fibrosis, haemodynamic stress of myocardium in the course of myocarditis, as well as studies aimed at identifying pathogens that cause myocarditis and factors predisposing to the onset of myocarditis. In addition, there is no systematic information on the type and burden of arrhythmias and their variability over time. A significant deficiency of research in the field of the above biomarkers and the severity of arrhythmia in the course of myocarditis translates into the lack of clear recommendations on the myocarditis management from the scientific societies and often leads to wrong therapeutic decisions.

The aim of the study is to fill the evidence gap regarding the diagnostic and prognostic value of biomarkers, as well as the type and burden of arrhythmias in patients with myocarditis.

This will be a non-interventional, observational study. The study will include 100 adult patients with confirmed (based on clinical findings, in accordance with applicable guidelines) first myocarditis episode, who agree to participate in the study.

During the multicenter observational study will be collected basic demographic data, current diagnosis, current disease history and clinical presentation of symptoms, laboratory tests results and all other additional tests carried out during or after index hospitalization. During the index hospitalization peripheral venous blood (10 ml) will be collected to obtain serum for further diagnostic tests (i.e. biochemical, genetic). The obtained material will be stored frozen until analysis. The tested biomarkers will include those that have a confirmed role in the diagnosis of myocardial necrosis, in inflammatory processes and fibrosis of the myocardium, participate in the pathophysiology of arrhythmia and heart failure development, i.e. high sensitive troponin, N-terminal-pro Brain Natriuretic Peptide (NT-proBNP), Galectin-3, (Suppression of Tumorigenicity 2) ST2.

Additionally, in selected cases, when a biopsy of the heart is performed in the course of the independent diagnostic procedure, the heart muscle biopsies will be analyzed. In the collected material (both in blood and biopsy samples) immunohistochemistry, virology and genetic research will be performed for specific antibodies and genetic material of pathogens causing myocarditis (mainly viruses, i.e. parvovirus B19, coxsackie, adenovirus).

The immunogenetic predisposition, as well as gene profiling of people who have become ill with myocarditis will also be sought.

In addition, patients will undergo prolonged ECG Holter monitoring for up to 7 days from the moment of consenting to participate in the study. Registered ECG recordings will be evaluated after the completed follow-up period. Then, after 3-months form inclusion in the study, a control visit will be made assessing the clinical condition of patients, clinical examination, collection of blood samples, standard resting 12-lead ECG, and 7-day ECG-Holter monitoring. Other study endpoints will be assessed after 1-year observation. The next stage will be the analysis of clinical history, obtained results of ECG monitoring, biomarkers and additional tests. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03801681
Study type Observational [Patient Registry]
Source Medical University of Warsaw
Contact Krzysztof Ozieranski, MD
Phone 22 5991958
Status Recruiting
Start date November 1, 2018
Completion date December 31, 2020

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