Next generation sequencing has identified novel causative genes such as FLNC, CDH2, and SCN5A for arrhythmogenic cardiomyopathy, highlighting a genetic overlap with dilated cardiomyopathy.
Next-generation sequencing has expanded the known genetic spectrum of arrhythmogenic cardiomyopathy, identifying novel genes like filamin C and cadherin 2, though variant interpretation requires specialized expertise.
PURPOSE OF REVIEW: To date 16 genes have been associated with arrhythmogenic cardiomyopathy (ACM). Mutations in these genes can lead to a broad spectrum of phenotypic expression ranging from disease affecting predominantly the right or left ventricle, to biventricular subtypes. Understanding the genetic causes of ACM is important in diagnosis and management of the disorder. This review summarizes recent advances in molecular genetics and discusses the application of next-generation sequencing technology in genetic testing in ACM. RECENT FINDINGS: Use of next-generation sequencing methods has resulted in the identification of novel causative variants and genes for ACM. The involvement of filamin C in ACM demonstrates the genetic overlap between ACM and other types of cardiomyopathy. Putative pathogenic variants have been detected in cadherin 2 gene, a protein involved in cell adhesion. Large genomic rearrangements in desmosome genes have been systematically investigated in a cohort of ACM patients. SUMMARY: Recent studies have identified novel causes of ACM providing new insights into the genetic spectrum of the disease and highlighting an overlapping phenotype between ACM and dilated cardiomyopathy. Next-generation sequencing is a useful tool for research and genetic diagnostic screening but interpretation of identified sequence variants requires caution and should be performed in specialized centres.
Karmouch et al. (Wed,) conducted a review in Arrhythmogenic cardiomyopathy. Next generation sequencing was evaluated. Next generation sequencing has identified novel causative genes such as FLNC, CDH2, and SCN5A for arrhythmogenic cardiomyopathy, highlighting a genetic overlap with dilated cardiomyopathy.