Total submissions: 4
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Color Diagnostics, |
RCV000775313 | SCV000909572 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-06-20 | criteria provided, single submitter | clinical testing | This missense variant replaces methionine with threonine at codon 303 of the MSH6 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 MSH6-related disorders in the literature. This variant has not been identified 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. |
| Labcorp Genetics |
RCV000799448 | SCV000939111 | uncertain significance | Hereditary nonpolyposis colorectal neoplasms | 2023-08-05 | 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 MSH6 protein function. ClinVar contains an entry for this variant (Variation ID: 630179). This variant has not been reported in the literature in individuals affected with MSH6-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces methionine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 303 of the MSH6 protein (p.Met303Thr). |
| Ambry Genetics | RCV000775313 | SCV004006205 | uncertain significance | Hereditary cancer-predisposing syndrome | 2023-03-20 | criteria provided, single submitter | clinical testing | The p.M303T variant (also known as c.908T>C), located in coding exon 4 of the MSH6 gene, results from a T to C substitution at nucleotide position 908. The methionine at codon 303 is replaced by threonine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. |
| All of Us Research Program, |
RCV004001442 | SCV004834912 | uncertain significance | Lynch syndrome | 2023-08-15 | criteria provided, single submitter | clinical testing |