ClinVar Miner

Submissions for variant NM_172107.4(KCNQ2):c.2T>C (p.Met1Thr)

dbSNP: rs118192186
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001057270 SCV001221753 pathogenic Early infantile epileptic encephalopathy with suppression bursts 2022-06-29 criteria provided, single submitter clinical testing For these reasons, this variant has been classified as Pathogenic. This variant disrupts the p.Arg144 amino acid residue in KCNQ2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 23934111, 25740509). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. ClinVar contains an entry for this variant (Variation ID: 21783). Disruption of the initiator codon has been observed in individual(s) with familial neonatal seizures (PMID: 14985406, 25982755; Invitae). It has also been observed to segregate with disease in related individuals. This variant is not present in population databases (gnomAD no frequency). This sequence change affects the initiator methionine of the KCNQ2 mRNA. The next in-frame methionine is located at codon 174.
GeneReviews RCV000678074 SCV000041635 not provided Seizures, benign familial neonatal, 1 no assertion provided literature only BFNE (benign familial neonatal epilepsy)

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