Abstract

Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC) is a progressive myocardial disease that primarily affects the right ventricle. It develops predominantly at young age, and the first symptom is often sudden cardiac death (SCD) associated with malignant ventricular arrhythmia. Diagnosis using standard cardiac assessment may be hampered due to slight and nonspecific clinical signs at early stage of the disease, particularly in relatives of the patient. Molecular genetic testing can provide more information for clinical decision making. Here we report a patient with a clinical diagnosis of ARVC who was found to have a new frame shift mutation in the PKP2 gene through molecular genetic testing using Next Generation Sequencing methods. Subsequent family assessment showed that all three of the proband’s children also carried this mutation. The results of molecular diagnostics allowed us to assess the risk of developing ARVC and SCD in relatives of the proband, as well as to set up individual cardiac assessment protocols. Results obtained emphasize the importance of family screening when a pathogenic mutation is detected in the primary patient, and demonstrate the efficiency of genetic testing in cardiological practice.

Highlights

  • Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC) is a hereditary progressive cardiac muscle disease characterized by fibro fatty myocardial dysplasia, ventricular arrhythmia, and sudden cardiac death (SCD) [1]

  • We examined a family in whichthe father and his children are heterozygous carriers of the novel frame shift mutation c.355delT in the PKP2 gene

  • At the time of this study, the proband has a definite clinical diagnosis of ARVC in advanced stage, and he was implanted with a cardioverter defibrillator for life-saving reasons

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Summary

Introduction

Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC) is a hereditary progressive cardiac muscle disease characterized by fibro fatty myocardial dysplasia, ventricular arrhythmia, and sudden cardiac death (SCD) [1]. Genetic testing should be recommended to patients with definite or potential diagnosis of ARVC (TFC 2010 criteria), as well as to their relatives if a pathogenic mutation was detected [11].

Results
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