ClinVar Miner

Submissions for variant NM_001165963.4(SCN1A):c.5117A>C (p.Asn1706Thr)

dbSNP: rs1553520340
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV000586336 SCV000697770 uncertain significance not provided 2017-01-23 criteria provided, single submitter clinical testing Variant summary: The SCN1A c.5117A>C (p.Asn1706Thr) variant involves the alteration of a conserved nucleotide. 4/4 in silico tools predict a damaging outcome for this variant (SNPs&GO not captured due to low reliability index). This variant was not found in 121386 control chromosomes. The variant of interest has not, to our knowledge, been reported in affected individuals via publications and/or reputable databases/clinical diagnostic laboratories; nor evaluated for functional impact by in vivo/vitro studies. Because of the absence of clinical information and the lack of functional studies, the variant is classified as a variant of uncertain significance (VUS) until additional information becomes available.
Invitae RCV002530922 SCV003324831 uncertain significance Early infantile epileptic encephalopathy with suppression bursts 2022-03-13 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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt SCN1A protein function. ClinVar contains an entry for this variant (Variation ID: 496122). This variant has not been reported in the literature in individuals affected with SCN1A-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces asparagine, which is neutral and polar, with threonine, which is neutral and polar, at codon 1706 of the SCN1A protein (p.Asn1706Thr).

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