ClinVar Miner

Submissions for variant NM_000263.4(NAGLU):c.1277G>A (p.Gly426Asp)

gnomAD frequency: 0.00001  dbSNP: rs771151036
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000796856 SCV000936387 pathogenic Mucopolysaccharidosis, MPS-III-B; Charcot-Marie-Tooth disease axonal type 2V 2020-01-11 criteria provided, single submitter clinical testing This variant is not present in population databases (ExAC no frequency). For these reasons, this variant has been classified as Pathogenic. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt NAGLU protein function. This variant has been observed in an individual with clinical features of mucopolysaccharidosis type III (Invitae). In this individual the data is consistent with the variant being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 643204). This sequence change replaces glycine with aspartic acid at codon 426 of the NAGLU protein (p.Gly426Asp). The glycine residue is highly conserved and there is a moderate physicochemical difference between glycine and aspartic acid.

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