Whole-exome sequencing in 15 patients with dilated cardiomyopathy identified 70 pathogenic or likely pathogenic variants and 1240 variants of uncertain clinical significance.
Observational (n=15)
Does whole-exome sequencing identify novel candidate genes and variants in patients with dilated cardiomyopathy?
Whole-exome sequencing in DCM patients identified novel candidate genes and variants related to extracellular matrix organization and transcellular movement, expanding the genetic landscape of the disease.
Dilated cardiomyopathy (DCM) is a complex disease affecting young adults. It is a pathological condition impairing myocardium activity that leads to heart failure and, in the most severe cases, transplantation, which is currently the only possible therapy for the disease. DCM can be attributed to many genetic determinants interacting with environmental factors, resulting in a highly variable phenotype. Due to this complexity, the early identification of causative gene mutations is an important goal to provide a genetic diagnosis, implement pre-symptomatic interventions, and predict prognosis. The advent of next-generation sequencing (NGS) has opened a new path for mutation screening, and exome sequencing provides a promising approach for identifying causal variants in known genes and novel disease-associated candidates. We analyzed the whole-exome sequencing (WES) of 15 patients affected by DCM without overloading (hypertension, valvular, or congenital heart disease) or chronic ischemic conditions. We identified 70 pathogenic or likely pathogenic variants and 1240 variants of uncertain clinical significance. Gene ontology enrichment analysis was performed to assess the potential connections between affected genes and biological or molecular function, identifying genes directly related to extracellular matrix organization, transcellular movement through the solute carrier and ATP-binding cassette transporter, and vitamin B12 metabolism. We found variants in genes implicated to a different extent in cardiac function that may represent new players in the complex genetic scenario of DCM.
D’Agostino et al. (Wed,) conducted a observational in Dilated cardiomyopathy (n=15). Whole-exome sequencing was evaluated on Identification of pathogenic or likely pathogenic variants and variants of uncertain clinical significance. Whole-exome sequencing in 15 patients with dilated cardiomyopathy identified 70 pathogenic or likely pathogenic variants and 1240 variants of uncertain clinical significance.
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