Hypertrophic Cardiomyopathy Mimicking a Primary Cardiac Tumor: Case Report and Review of Molecular Genetic Findings.
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Sudden cardiac death (SCD) is a known risk of hypertrophic cardiomyopathy (HCM), especially in asymptomatic and younger (<35 years old) populations. There are several mutations that cause HCM, most notably within the MYBPC3 and MYH7 genes. ALPK3 (alpha protein kinase 3) has been identified as a gene of interest in HCM, specifically associated with late-onset adult HCM or pediatric cases which typically present with musculoskeletal and facial deformities. In this report, we present a case of SCD due to HCM in a young, reportedly asymptomatic patient without dysmorphia that had a specific mutation of the ALPK3 gene and a striking gross pathological appearance previously undiscussed in literature.