ClinVar Miner

Submissions for variant NM_001037.5(SCN1B):c.448+217C>T

dbSNP: rs1085307597
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000489974 SCV000576808 uncertain significance not provided 2017-04-19 criteria provided, single submitter clinical testing The P222L variant of uncertain significance in an alternate transcript of the SCN1B gene has not been published as pathogenic or been reported as benign to our knowledge. This variant is not observed in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The P222L variant is a semi-conservative amino acid substitution, which may impact secondary protein structure as these residues differ in some properties. However, this substitution occurs at a position that is not conserved across species, and 2/3 in silico algorithms predict this variant likely does not alter the protein structure/function.
Labcorp Genetics (formerly Invitae), Labcorp RCV002527024 SCV003021344 uncertain significance Brugada syndrome 5 2022-10-10 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: "Probably Damaging"; Align-GVGD: "Class C15"). ClinVar contains an entry for this variant (Variation ID: 426385). 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 proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 222 of the SCN1B protein (p.Pro222Leu).

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