Total submissions: 5
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Gene |
RCV000757181 | SCV000572009 | uncertain significance | not provided | 2016-10-24 | criteria provided, single submitter | clinical testing | A variant of uncertain significance has been identified in the DSG2 gene. The G1078A variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The G1078A variant was not observed in approximately 6000 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. However, the G1078A variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties, and this substitution occurs at a position that is not conserved across species. Lastly, in silico analysis predicts this variant likely does not alter the protein structure/function. |
ARUP Laboratories, |
RCV000757181 | SCV000885317 | uncertain significance | not provided | 2018-05-04 | criteria provided, single submitter | clinical testing | The DSG2 c.3233G>C; p.Gly1078Ala variant (ClinVar variant ID 422516), to our knowledge, is not reported in the medical literature, gene specific variation databases, nor has it been previously identified by our laboratory. This variant is listed in the genome Aggregation Database (gnomAD) with an overall population frequency of 0.0004% (identified on 1 out of 246,030 chromosomes). The glycine at position 1078 is weakly conserved, considering 12 species, and computational analyses of the effects of the p.Gly1078Ala variant on protein structure and function do not predict a deleterious effect (SIFT: tolerated, PolyPhen-2: benign). Based on the available information, the clinical significance of the p.Gly1078Ala variant cannot be determined with certainty. |
Labcorp Genetics |
RCV001241693 | SCV001414728 | uncertain significance | Arrhythmogenic right ventricular dysplasia 10 | 2022-09-28 | criteria provided, single submitter | clinical testing | This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 1078 of the DSG2 protein (p.Gly1078Ala). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with DSG2-related conditions. ClinVar contains an entry for this variant (Variation ID: 422516). 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 DSG2 protein function. 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. |
Color Diagnostics, |
RCV003532143 | SCV004363240 | uncertain significance | Cardiomyopathy | 2023-11-22 | criteria provided, single submitter | clinical testing | This missense variant replaces glycine with alanine at codon 1078 of the DSG2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with DSG2-related disorders in the literature. This variant has been identified in 1/249384 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. |
All of Us Research Program, |
RCV004003377 | SCV004824698 | uncertain significance | Arrhythmogenic right ventricular cardiomyopathy | 2024-02-05 | criteria provided, single submitter | clinical testing | This missense variant replaces glycine with alanine at codon 1078 of the DSG2 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with DSG2-related disorders in the literature. This variant has been identified in 1/249384 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. |