ClinVar Miner

Submissions for variant NM_000335.4(SCN5A):c.4497G>T (p.Lys1499Asn) (rs199473265)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Cardiovascular Biomedical Research Unit,Royal Brompton & Harefield NHS Foundation Trust RCV000058683 SCV000090203 not provided Congenital long QT syndrome no assertion provided literature only This variant has been reported as associated with Long QT syndrome in the following publications (PMID:10508990;PMID:15120823). This is a literature report, and does not necessarily reflect the clinical interpretation of the Imperial College / Royal Brompton Cardiovascular Genetics laboratory.
Invitae RCV000705459 SCV000834457 uncertain significance Brugada syndrome 2018-04-23 criteria provided, single submitter clinical testing This sequence change replaces lysine with asparagine at codon 1500 of the SCN5A protein (p.Lys1500Asn). The lysine residue is highly conserved and there is a moderate physicochemical difference between lysine and asparagine. This variant is not present in population databases (ExAC no frequency). This variant has been reported in an individual affected with Long QT syndrome; however, this variant was not observed in this individual's affected daughter (PMID: 10508990). ClinVar contains an entry for this variant (Variation ID: 67903). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

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