ClinVar Miner

Submissions for variant NM_001330260.2(SCN8A):c.718A>C (p.Ile240Leu)

dbSNP: rs1064793923
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000479112 SCV000567356 pathogenic not provided 2015-08-06 criteria provided, single submitter clinical testing The I240L substitution in the SCN8A gene has not been reported previously in the literature as a pathogenic variant nor as a benign polymorphism, to our knowledge. The I240L substitution was not observed in approximately 6400 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The I240L variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. This substitution occurs at a position that is conserved across species in the cytoplasmic region between the S4 and S5 segments in the 1st homologous domain. In silico analysis predicts this variant is probably damaging to the protein structure/function. Therefore, we interpret I240L as a pathogenic variant.

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