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Background  Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited myocardial disease characterized by fibrofatty replacement and ventricular arrhythmias. ARVC is believed to be a disease of the young, with most cases being diagnosed before the age of 40 years. We report here a case of newly diagnosed ARVC in an octogenarian associated with a pathogenic variant in the plakophilin 2 gene ( PKP2 ).    Case presentation  An 80-year-old Japanese man was referred for sustained ventricular tachycardia. His baseline electrocardiogram showed negative T waves in V1–V4. Right ventriculography showed right ventricular aneurysm. Because this case met three major criteria, ARVC was diagnosed. He was successfully treated with radiofrequency ablation and oral amiodarone. Genetic analysis identified an insertion mutation in exon 8 of  PKP2  (1725_1728dupGATG), which caused a frameshift and premature termination of translation (R577DfsX5).    Conclusions  To the best of our knowledge, this is the first report of newly diagnosed ARVC in an octogenarian associated with a loss-of-function  PKP2  pathogenic variant. Although the late clinical presentation of ARVC is rare, it should be included in the differential diagnosis when treating older patients with ventricular tachyarrhythmias.    Electronic supplementary material  The online version of this article (10.1186/s12872-019-1018-2) contains supplementary material, which is available to authorized users.

bmc cardiovascular disorders

Late presentation of arrhythmogenic right ventricular cardiomyopathy in an octogenarian associated with a pathogenic variant in the plakophilin 2 gene: a case report