ClinVar Miner

Submissions for variant NM_020822.3(KCNT1):c.274G>A (p.Val92Ile)

gnomAD frequency: 0.00001  dbSNP: rs776233220
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Athena Diagnostics Inc RCV000992238 SCV001144343 uncertain significance not provided 2018-12-11 criteria provided, single submitter clinical testing
Invitae RCV001202825 SCV001373954 uncertain significance Developmental and epileptic encephalopathy, 14; Autosomal dominant nocturnal frontal lobe epilepsy 5 2024-01-04 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 92 of the KCNT1 protein (p.Val92Ile). This variant is present in population databases (rs776233220, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with KCNT1-related conditions. ClinVar contains an entry for this variant (Variation ID: 804967). 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 KCNT1 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.
Genome-Nilou Lab RCV002271149 SCV002554718 uncertain significance Developmental and epileptic encephalopathy, 14 2022-03-15 criteria provided, single submitter clinical testing
Genome-Nilou Lab RCV002271150 SCV002554719 uncertain significance Autosomal dominant nocturnal frontal lobe epilepsy 5 2022-03-15 criteria provided, single submitter clinical testing
Revvity Omics, Revvity RCV000992238 SCV004235886 uncertain significance not provided 2023-10-30 criteria provided, single submitter clinical testing

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