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1 Introduction Cardiac involvement in systemic lupus erythematosus (SLE) is well recognized, and myocarditis is often suspected in patients presenting with chest pain, elevated cardiac biomarkers, new conduction abnormalities, arrhythmia, or ventricular dysfunction [1]. However, this clinical scenario represents a diagnostic challenge because inflammatory and non-inflammatory etiologies may share overlapping clinical, electrocardiographic, and imaging features.
1 Introduction The RBM20 gene is located on the long arm of chromosome 10q25.2 in humans and encodes a serine/arginine-rich protein that regulates the post-transcriptional alternative splicing process of various genes related to cardiovascular pathology, among which titin (TTN) stands out, which is the reason why pathogenic or likely pathogenic variants in RBM20 have been associated primarily with the development of cardiomyopathy [1].
Introduction Rare in occurrence, left-dominant arrhythmogenic cardiomyopathy (LDAC) is an atypical variant of arrhythmogenic cardiomyopathy (ACM) typified by fibro-fatty infiltration and ventricular impairment, predominantly in the left ventricle.1 Dilated cardiomyopathy, a frequent heart failure aetiology, is genetically diverse, and mutations in the desmoplakin (DSP) gene have been linked to diverse ACM phenotypes, including LDAC.2, 3 We present an unanticipated case of LDAC attributable to...
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