Vischer, AS; Castelletti, S; Syrris, P; McKenna, WJ; Pantazis, A; (2019) Heart failure in patients with arrhythmogenic right ventricular cardiomyopathy: Genetic characteristics. International Journal of Cardiology , 286 pp. 99-103. 10.1016/j.ijcard.2019.01.065.

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Abstract

BACKGROUND: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a genetically determined heart muscle disorder. The incidence of heart failure (HF) in ARVC has been reported at 5-13%. We aimed to define the genotype and disease progression of ARVC patients with HF. METHODS: Patients with a definite diagnosis of ARVC who underwent genetic testing were consecutively recruited. Detailed clinical data was collected at baseline and during follow up. Clinical endpoint was a composite of heart transplantation and death due to HF. RESULTS: 135 patients were included. 8 (5.9%) patients reached the endpoint. Patients reaching the endpoint were significantly more likely to carry a Plakophilin 2 mutation than patients without HF, and 50% had multiple variants, however only one patient had 2 pathogenic mutations. CONCLUSIONS: HF is a rare but significant outcome of patients with a definite diagnosis of ARVC. Patients with HF predominantly carried Plakophilin 2 mutations and often had multiple variants. RV dysfunction appears to be a determinant of heart transplantation and death.

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