ClinVar Miner

Submissions for variant NM_054012.4(ASS1):c.793C>T (p.Arg265Cys)

gnomAD frequency: 0.00001  dbSNP: rs148918985
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Eurofins Ntd Llc (ga) RCV000078025 SCV000109863 pathogenic not provided 2013-01-18 criteria provided, single submitter clinical testing
Invitae RCV001247325 SCV001420737 pathogenic Citrullinemia 2024-01-22 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 265 of the ASS1 protein (p.Arg265Cys). This variant is present in population databases (rs148918985, gnomAD 0.003%). This missense change has been observed in individuals with citrullinemia type I (PMID: 28132756, 30285816). ClinVar contains an entry for this variant (Variation ID: 92373). 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 ASS1 protein function with a positive predictive value of 80%. Experimental studies have shown that this missense change affects ASS1 function (PMID: 18473344). This variant disrupts the p.Arg265 amino acid residue in ASS1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 12815590). 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.
Baylor Genetics RCV001831814 SCV004204985 likely pathogenic Citrullinemia type I 2023-08-24 criteria provided, single submitter clinical testing
Natera, Inc. RCV001831814 SCV002085094 pathogenic Citrullinemia type I 2021-02-01 no assertion criteria provided clinical testing

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