ClinVar Miner

Submissions for variant NM_198056.2(SCN5A):c.4346A>G (p.Tyr1449Cys) (rs199473613)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000183070 SCV000235479 likely pathogenic not provided 2017-03-07 criteria provided, single submitter clinical testing The Y1449C variant in the SCN5A gene has been reported in two individuals with Brugada syndrome (Kapplinger et al., 2010; Walsh et al., 2014). It has also been reported in one individual with a personal history suspicious for Brugada syndrome and co-segregated with Brugada syndrome in an affected parent (McMillan et al., 2014). Furthermore, it was shown to co-segregate with a spectrum of cardiac phenotypes, including conduction disease, Brugada syndrome, and atrial arrhythmia, in three relatives of another family (Hothi et al., 2015). Despite Y1449C segregating with disease in three individuals from this family, it was also identified in three asymptomatic relatives. The Y1449C variant was not observed in approximately 6300 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. Additionally, the Y1449C variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties, and this substitution occurs at a position that is conserved across species. Finally, in silico analysis predicts this variant is probably damaging to the protein structure/function.
Cardiovascular Biomedical Research Unit,Royal Brompton & Harefield NHS Foundation Trust RCV000058664 SCV000090184 not provided Brugada syndrome no assertion provided literature only This variant has been reported as associated with Brugada syndrome in the following publications (PMID:20129283). This is a literature report, and does not necessarily reflect the clinical interpretation of the Imperial College / Royal Brompton Cardiovascular Genetics laboratory.

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