Total submissions: 2
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV001024138 | SCV001186105 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-06-21 | criteria provided, single submitter | clinical testing | The p.G182A variant (also known as c.545G>C), located in coding exon 6 of the SDHB gene, results from a G to C substitution at nucleotide position 545. The glycine at codon 182 is replaced by alanine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |
| Invitae | RCV001337551 | SCV001531157 | uncertain significance | Gastrointestinal stromal tumor; Paragangliomas 4; Pheochromocytoma | 2023-05-25 | criteria provided, single submitter | clinical testing | This variant is not present in population databases (gnomAD no frequency). 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 expected to disrupt SDHB protein function. ClinVar contains an entry for this variant (Variation ID: 825752). This variant has not been reported in the literature in individuals affected with SDHB-related conditions. This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 182 of the SDHB protein (p.Gly182Ala). |