ClinVar Miner

Submissions for variant NM_000155.4(GALT):c.1006A>G (p.Met336Val)

dbSNP: rs111033810
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Eurofins Ntd Llc (ga) RCV000277828 SCV000331017 uncertain significance not provided 2015-09-18 criteria provided, single submitter clinical testing
Invitae RCV003609151 SCV004539607 pathogenic Deficiency of UDPglucose-hexose-1-phosphate uridylyltransferase 2023-11-05 criteria provided, single submitter clinical testing This sequence change replaces methionine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 336 of the GALT protein (p.Met336Val). This variant is present in population databases (rs111033810, gnomAD 0.02%). This missense change has been observed in individual(s) with features of galactosemia (Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 280997). 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 GALT protein function with a positive predictive value of 95%. This variant disrupts the p.Met336 amino acid residue in GALT. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 11397328, 17876724). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic.

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