ClinVar Miner

Submissions for variant NM_001037.5(SCN1B):c.471C>G (p.Ile157Met)

dbSNP: rs765269835
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV002318088 SCV000849763 uncertain significance Cardiovascular phenotype 2019-08-07 criteria provided, single submitter clinical testing The p.I157M variant (also known as c.471C>G), located in coding exon 4 of the SCN1B gene, results from a C to G substitution at nucleotide position 471. The isoleucine at codon 157 is replaced by methionine, an amino acid with highly similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.
Invitae RCV001862054 SCV002111617 uncertain significance Brugada syndrome 5 2023-09-30 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. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. This variant has not been reported in the literature in individuals affected with SCN1B-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces isoleucine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 157 of the SCN1B protein (p.Ile157Met). The SCN1B gene has multiple clinically relevant transcripts. This variant occurs in alternate transcript NM_001037.4, and corresponds to NM_199037.3:c.*5041C>G in the primary transcript.

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