ClinVar Miner

Submissions for variant NM_001271.4(CHD2):c.4978G>A (p.Asp1660Asn) (rs61752830)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000228657 SCV000286965 uncertain significance Epileptic encephalopathy, childhood-onset 2015-12-16 criteria provided, single submitter clinical testing This sequence change replaces aspartic acid with asparagine at codon 1660 of the CHD2 protein (p.Asp1660Asn). The aspartic acid residue is weakly conserved and there is a small physicochemical difference between aspartic acid and asparagine. This variant is present in population databases (rs61752830, ExAC 0.003%) but has not been reported in the literature in individuals with a CHD2-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, this is a rare missense change with uncertain impact on protein function. There is no indication that this variant causes disease, but the evidence is insufficient at this time to prove that conclusively. Therefore, it has been classified as a Variant of Uncertain Significance.

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