ClinVar Miner

Submissions for variant NM_000334.4(SCN4A):c.55C>T (p.Pro19Ser)

dbSNP: rs772628295
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV001757932 SCV001987917 uncertain significance not provided 2021-03-24 criteria provided, single submitter clinical testing Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Fulgent Genetics, Fulgent Genetics RCV002488519 SCV002787489 uncertain significance Hypokalemic periodic paralysis, type 1; Potassium-aggravated myotonia; Paramyotonia congenita of Von Eulenburg; Hypokalemic periodic paralysis, type 2; Hyperkalemic periodic paralysis; Congenital myasthenic syndrome 16 2022-01-11 criteria provided, single submitter clinical testing
Athena Diagnostics RCV001757932 SCV004230018 uncertain significance not provided 2023-08-15 criteria provided, single submitter clinical testing Available data are insufficient to determine the clinical significance of the variant at this time. The frequency of this variant in the general population is uninformative in assessment of its pathogenicity (http://gnomad.broadinstitute.org). Computational tools predict that this variant is not damaging.
Labcorp Genetics (formerly Invitae), Labcorp RCV003615875 SCV004507776 uncertain significance Hyperkalemic periodic paralysis 2024-01-03 criteria provided, single submitter clinical testing This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 19 of the SCN4A protein (p.Pro19Ser). This variant is present in population databases (no rsID available, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with SCN4A-related conditions. ClinVar contains an entry for this variant (Variation ID: 1303377). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SCN4A protein function. 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.
Mayo Clinic Laboratories, Mayo Clinic RCV001757932 SCV005412812 uncertain significance not provided 2023-07-18 criteria provided, single submitter clinical testing

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