ClinVar Miner

Submissions for variant NM_000744.7(CHRNA4):c.1447C>T (p.Arg483Trp)

gnomAD frequency: 0.00001  dbSNP: rs998924085
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000814401 SCV000954810 uncertain significance Autosomal dominant nocturnal frontal lobe epilepsy 2022-11-15 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) 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 CHRNA4 protein function. ClinVar contains an entry for this variant (Variation ID: 657727). This missense change has been observed in at least one individual who was not affected with CHRNA4-related conditions (Invitae). This variant has not been reported in the literature in individuals affected with CHRNA4-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 483 of the CHRNA4 protein (p.Arg483Trp).
Revvity Omics, Revvity RCV003485649 SCV004235077 uncertain significance Autosomal dominant nocturnal frontal lobe epilepsy 1 2023-04-13 criteria provided, single submitter clinical testing

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