ClinVar Miner

Submissions for variant NM_000744.7(CHRNA4):c.1637T>G (p.Val546Gly)

gnomAD frequency: 0.00004  dbSNP: rs764888239
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000186913 SCV000240484 likely benign not specified 2013-04-15 criteria provided, single submitter clinical testing This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.
Invitae RCV000694555 SCV000823006 uncertain significance Autosomal dominant nocturnal frontal lobe epilepsy 2023-11-29 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with glycine, which is neutral and non-polar, at codon 546 of the CHRNA4 protein (p.Val546Gly). This variant is present in population databases (rs764888239, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with CHRNA4-related conditions. ClinVar contains an entry for this variant (Variation ID: 205003). 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 not expected to disrupt CHRNA4 protein function with a negative predictive value of 80%. 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.
Athena Diagnostics Inc RCV000711163 SCV000841493 uncertain significance not provided 2017-10-18 criteria provided, single submitter clinical testing

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