ClinVar Miner

Submissions for variant NM_001134407.3(GRIN2A):c.4310A>G (p.Asn1437Ser)

gnomAD frequency: 0.00001  dbSNP: rs1427097667
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000799560 SCV000939230 uncertain significance Landau-Kleffner syndrome 2018-12-23 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with GRIN2A-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces asparagine with serine at codon 1437 of the GRIN2A protein (p.Asn1437Ser). The asparagine residue is weakly conserved and there is a small physicochemical difference between asparagine and serine.

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