Total submissions: 3
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Gene |
RCV000413966 | SCV000491799 | uncertain significance | not specified | 2016-11-14 | criteria provided, single submitter | clinical testing | A variant of uncertain significance has been identified in the CACNA1A gene. The G954R variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. It was not observed in approximately 3,900 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. The G954R variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position that is conserved across species where amino acids with similar properties to Glycine are tolerated across species; however, Arginine has been seen in this position in evolution. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. |
| Labcorp Genetics |
RCV000702148 | SCV000830988 | uncertain significance | Episodic ataxia type 2; Developmental and epileptic encephalopathy, 42 | 2022-06-10 | criteria provided, single submitter | clinical testing | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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 not expected to disrupt CACNA1A protein function. ClinVar contains an entry for this variant (Variation ID: 373221). This variant has not been reported in the literature in individuals affected with CACNA1A-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 954 of the CACNA1A protein (p.Gly954Arg). |
| Athena Diagnostics | RCV003482254 | SCV004229454 | uncertain significance | not provided | 2023-05-08 | criteria provided, single submitter | clinical testing | Available data are insufficient to determine the clinical significance of the variant at this time. This variant has not been reported in large, multi-ethnic general populations. (http://gnomad.broadinstitute.org) Computational tools predict that this variant is not damaging. |