ClinVar Miner

Submissions for variant NM_021629.4(GNB4):c.227A>G (p.Asp76Gly)

dbSNP: rs1714805406
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001035012 SCV001198317 likely pathogenic Charcot-Marie-Tooth disease dominant intermediate F 2020-10-27 criteria provided, single submitter clinical testing In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. 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 are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has been observed in individual(s) with clinical features of Charcot-Marie-Tooth disease (Invitae). In at least one individual the variant was observed to be de novo. This variant is not present in population databases (ExAC no frequency). This sequence change replaces aspartic acid with glycine at codon 76 of the GNB4 protein (p.Asp76Gly). The aspartic acid residue is highly conserved and there is a moderate physicochemical difference between aspartic acid and glycine.

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