ClinVar Miner

Submissions for variant NM_000744.7(CHRNA4):c.1629C>G (p.Ser543Arg)

dbSNP: rs1044396
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001063044 SCV001227874 uncertain significance Autosomal dominant nocturnal frontal lobe epilepsy 2023-12-11 criteria provided, single submitter clinical testing This sequence change replaces serine, which is neutral and polar, with arginine, which is basic and polar, at codon 543 of the CHRNA4 protein (p.Ser543Arg). This variant is present in population databases (rs1044396, gnomAD 0.06%), and has an allele count higher than expected for a pathogenic variant. 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: 857384). 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.
GeneDx RCV001565543 SCV001788907 likely benign not provided 2018-12-26 criteria provided, single submitter clinical testing

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