Total submissions: 6
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Invitae | RCV000206901 | SCV001232729 | pathogenic | Familial hyperkalemic periodic paralysis | 2023-12-30 | criteria provided, single submitter | clinical testing | This sequence change replaces arginine, which is basic and polar, with glycine, which is neutral and non-polar, at codon 672 of the SCN4A protein (p.Arg672Gly). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with hypokalemic periodic paralysis (PMID: 10944223, 18162704, 19225109). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 5913). 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 SCN4A protein function with a positive predictive value of 95%. Experimental studies have shown that this missense change affects SCN4A function (PMID: 10944223, 11912116, 17330043, 18824591, 20660662). This variant disrupts the p.Arg672 amino acid residue in SCN4A. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 10944223, 11558801, 15482957, 18824591, 23019082). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. |
Ce |
RCV001092728 | SCV001249368 | pathogenic | not provided | 2019-04-01 | criteria provided, single submitter | clinical testing | |
OMIM | RCV000006276 | SCV000026458 | pathogenic | Hypokalemic periodic paralysis, type 2 | 2002-04-01 | no assertion criteria provided | literature only | |
Gene |
RCV000006276 | SCV000040616 | not provided | Hypokalemic periodic paralysis, type 2 | no assertion provided | literature only | ||
Gene |
RCV000206901 | SCV000262564 | not provided | Familial hyperkalemic periodic paralysis | no assertion provided | literature only | ||
Department of Neurology and Geriatrics, |
RCV000020262 | SCV002600055 | pathogenic | Hypokalemic periodic paralysis, type 1 | 2022-04-12 | no assertion criteria provided | research |