ClinVar Miner

Submissions for variant NM_000512.5(GALNS):c.851T>G (p.Phe284Cys)

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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 RCV003599563 SCV004503362 likely pathogenic Mucopolysaccharidosis, MPS-IV-A 2023-02-24 criteria provided, single submitter clinical testing This sequence change replaces phenylalanine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 284 of the GALNS protein (p.Phe284Cys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with GALNS-related conditions. 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. 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 disrupts the p.Phe284 amino acid residue in GALNS. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 23876334, 24726177, 30980944). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing.

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