ClinVar Miner

Submissions for variant NM_001037.5(SCN1B):c.331G>A (p.Val111Ile)

dbSNP: rs2064228638
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001883293 SCV002137794 uncertain significance Brugada syndrome 5 2021-02-22 criteria provided, single submitter clinical testing 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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with SCN1B-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces valine with isoleucine at codon 111 of the SCN1B protein (p.Val111Ile). The valine residue is highly conserved and there is a small physicochemical difference between valine and isoleucine.
Ambry Genetics RCV003164232 SCV003858657 uncertain significance Cardiovascular phenotype 2023-01-22 criteria provided, single submitter clinical testing The p.V111I variant (also known as c.331G>A), located in coding exon 3 of the SCN1B gene, results from a G to A substitution at nucleotide position 331. The valine at codon 111 is replaced by isoleucine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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