ClinVar Miner

Submissions for variant NM_000404.4(GLB1):c.931G>A (p.Gly311Arg)

gnomAD frequency: 0.00001  dbSNP: rs368568171
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001059700 SCV001224337 pathogenic Mucopolysaccharidosis, MPS-IV-B; GM1 gangliosidosis 2023-03-08 criteria provided, single submitter clinical testing 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 GLB1 protein function. ClinVar contains an entry for this variant (Variation ID: 854615). This missense change has been observed in individual(s) with clinical features of GM1 gangliosidosis and Morquio B syndrome (PMID: 23430499, 26108645). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is present in population databases (rs368568171, gnomAD 0.002%). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 311 of the GLB1 protein (p.Gly311Arg).
GenomeConnect - GM1 RCV001175304 SCV001338926 not provided GM1 gangliosidosis no assertion provided phenotyping only Variant interpreted as Uncertain significance and reported on 10-06-2011 by Lab or GTR ID 500060. GenomeConnect-GM1 assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant.

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