ClinVar Miner

Submissions for variant NM_001182.5(ALDH7A1):c.365G>A (p.Arg122Gln)

dbSNP: rs796052256
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001067268 SCV001232319 likely pathogenic Pyridoxine-dependent epilepsy 2024-02-14 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 122 of the ALDH7A1 protein (p.Arg122Gln). This variant is present in population databases (no rsID available, gnomAD 0.003%). This variant has not been reported in the literature in individuals affected with ALDH7A1-related conditions. ClinVar contains an entry for this variant (Variation ID: 860878). 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 ALDH7A1 protein function with a positive predictive value of 95%. This variant disrupts the p.Arg122 amino acid residue in ALDH7A1. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 31737911). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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.
GeneDx RCV005225216 SCV005870595 uncertain significance not provided 2024-08-20 criteria provided, single submitter clinical testing Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge

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