ClinVar Miner

Submissions for variant NM_172107.4(KCNQ2):c.2300G>A (p.Arg767Gln)

gnomAD frequency: 0.00001  dbSNP: rs752551225
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001044833 SCV001208653 uncertain significance Early infantile epileptic encephalopathy with suppression bursts 2023-06-23 criteria provided, single submitter clinical testing This variant is present in population databases (rs752551225, gnomAD 0.008%). 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. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 842415). This variant has not been reported in the literature in individuals affected with KCNQ2-related conditions. This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 767 of the KCNQ2 protein (p.Arg767Gln).
Fulgent Genetics, Fulgent Genetics RCV002479278 SCV002786217 uncertain significance Seizures, benign familial neonatal, 1; Developmental and epileptic encephalopathy, 7 2021-10-06 criteria provided, single submitter clinical testing
Ambry Genetics RCV004629415 SCV005126923 likely benign Inborn genetic diseases 2024-06-04 criteria provided, single submitter clinical testing This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

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