Background: Desmoplakin cardiomyopathy has been recently classified as a non-dilated left ventricular cardiomyopathy, which is characterized by inflammatory-like episodes followed by left ventricular fibrosis/dysfunction and ventricular arrhythmias. Specific management is unclear.
Case Summary: We report a detailed case of a 46-year-old Caucasian woman presenting with repeated sudden cardiac arrests who was diagnosed with a new variant in the desmoplakin gene. Because the initial 18F-fluorodeoxyglucose positron emission tomography scan showed significant hypermetabolism, she was treated with immunosuppressors, with only minimal improvement on imaging.
Discussion: Desmoplakin cardiomyopathy should be considered in the differential diagnosis of inflammatory cardiomyopathies. Little is known about the use of immunosuppressive treatments, but it could be reasonable for some selected patients.
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http://dx.doi.org/10.1093/ehjcr/ytae160 | DOI Listing |
Heart Rhythm
December 2024
Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA.
Background: Desmoplakin (DSP) variants are associated with left-predominant or biventricular arrhythmogenic cardiomyopathy. Exercise promotes penetrance and sustained ventricular arrhythmias (VA) in right-sided arrhythmogenic right ventricular cardiomyopathy, but its effect is unknown in DSP variant carriers.
Objectives: To assess whether exercise is associated with clinical outcomes among individuals with a pathogenic or likely pathogenic (P/LP) DSP variant.
Hum Genome Var
December 2024
Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, 565-0871, Japan.
DSG2, encoding desmoglein-2, is one of the causative genes of arrhythmogenic cardiomyopathy. We previously identified a homozygous DSG2 p.Arg119Ter stop-gain variant in a patient with juvenile-onset cardiomyopathy and advanced biventricular heart failure.
View Article and Find Full Text PDFEur Heart J
December 2024
Institute of Cardiovascular Science, University College London, Rayne Building-Room 228, 5 University Street, London WC1E 6JF, UK.
ESC Heart Fail
December 2024
Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Unlabelled: Desmosomes are essential cell-cell adhesion organelles that enable tension-prone tissue, like the skin and heart, withstand mechanical stress. Desmosomal anomalies are associated with numerous epidermal disorders and cardiomyopathies. Despite their critical role in maintaining tissue resilience, an understanding of how desmosomes respond to mechanical stimuli is lacking.
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