ClinVar Miner

Submissions for variant NM_001330260.2(SCN8A):c.550A>G (p.Ile184Val)

dbSNP: rs1029149299
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000578831 SCV000566587 uncertain significance not provided 2017-10-10 criteria provided, single submitter clinical testing The I184V variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. It was not observed in approximately 6,000 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. This substitution occurs at a conserved position predicted to be within the cytoplasmic loop between the S2 and S3 transmembrane segments of the first homologous domain. However, the I184V variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties, and in silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant.
PreventionGenetics, part of Exact Sciences RCV003409653 SCV004115888 uncertain significance SCN8A-related condition 2022-10-04 criteria provided, single submitter clinical testing The SCN8A c.550A>G variant is predicted to result in the amino acid substitution p.Ile184Val. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence.
GenomeConnect, ClinGen RCV000578831 SCV000681397 not provided not provided no assertion provided phenotyping only GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant.

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