ClinVar Miner

Submissions for variant NM_000512.5(GALNS):c.716T>G (p.Val239Gly)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003495045 SCV004307736 likely pathogenic Mucopolysaccharidosis, MPS-IV-A 2023-07-28 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. This variant disrupts the p.Tyr240Cys amino acid residue in GALNS. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 23876334). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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 GALNS protein function. This variant has not been reported in the literature in individuals affected with GALNS-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with glycine, which is neutral and non-polar, at codon 239 of the GALNS protein (p.Val239Gly).

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