Abstract:
:Brugada syndrome (BrS) is an inherited cardiac arrhythmic disorder that can lead to sudden death, with a prevalence of 1:5000 in Caucasian population and affecting mainly male patients in their third to fourth decade of life. BrS is inherited as an autosomal dominant trait; however, to date genetic bases have been only partially understood. Indeed most mutations are located in the SCN5A gene, encoding the alpha-subunit of the Na(+) cardiac channel, but >70% BrS patients still remain genetically undiagnosed. Although 21 other genes have been associated with BrS susceptibility, their pathogenic role is still unclear. A recent next-generation sequencing study investigated the contribution of 45 arrhythmia susceptibility genes in BrS pathogenesis, observing a significant enrichment only for SCN5A. In our study, we evaluated the distribution of putative functional variants in a wider panel of 158 genes previously associated with arrhythmic and cardiac defects in a cohort of 91 SCN5A-negative BrS patients. In addition, to identify genes significantly enriched in BrS, we performed a mutation burden test by using as control dataset European individuals selected from the 1000Genomes project. We confirmed BrS genetic heterogeneity and identified new potential BrS candidates such as DSG2 and MYH7, suggesting a possible genetic overlap between different cardiac disorders.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Di Resta C,Pietrelli A,Sala S,Della Bella P,De Bellis G,Ferrari M,Bordoni R,Benedetti Sdoi
10.1093/hmg/ddv302subject
Has Abstractpub_date
2015-10-15 00:00:00pages
5828-35issue
20eissn
0964-6906issn
1460-2083pii
ddv302journal_volume
24pub_type
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