Total submissions: 9
Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
---|---|---|---|---|---|---|---|---|
Ambry Genetics | RCV000130590 | SCV000185463 | uncertain significance | Hereditary cancer-predisposing syndrome | 2024-02-14 | criteria provided, single submitter | clinical testing | The p.Q327E variant (also known as c.979C>G), located in coding exon 11 of the MLH1 gene, results from a C to G substitution at nucleotide position 979. The glutamine at codon 327 is replaced by glutamic acid, an amino acid with highly 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. Based on the available evidence, the clinical significance of this alteration remains unclear. |
Invitae | RCV000199406 | SCV000254376 | uncertain significance | Hereditary nonpolyposis colorectal neoplasms | 2024-01-28 | criteria provided, single submitter | clinical testing | This sequence change replaces glutamine, which is neutral and polar, with glutamic acid, which is acidic and polar, at codon 327 of the MLH1 protein (p.Gln327Glu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MLH1-related conditions. ClinVar contains an entry for this variant (Variation ID: 141891). 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 MLH1 protein function with a negative predictive value of 95%. 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, |
RCV000130590 | SCV000684888 | uncertain significance | Hereditary cancer-predisposing syndrome | 2022-11-15 | criteria provided, single submitter | clinical testing | This missense variant replaces glutamine with glutamic acid at codon 327 of the MLH1 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MLH1-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. |
Counsyl | RCV000663060 | SCV000786118 | uncertain significance | Colorectal cancer, hereditary nonpolyposis, type 2 | 2018-02-27 | criteria provided, single submitter | clinical testing | |
Gene |
RCV001564943 | SCV001788191 | uncertain significance | not provided | 2023-03-24 | criteria provided, single submitter | clinical testing | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in individuals with acute lymphoblastic leukemia and breast cancer (Zhang et al., 2015; Chen et al., 2020); This variant is associated with the following publications: (PMID: 22753075, 32091409, 26580448) |
Myriad Genetics, |
RCV000663060 | SCV004018106 | uncertain significance | Colorectal cancer, hereditary nonpolyposis, type 2 | 2023-03-13 | criteria provided, single submitter | clinical testing | This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. |
Baylor Genetics | RCV000663060 | SCV004192959 | uncertain significance | Colorectal cancer, hereditary nonpolyposis, type 2 | 2023-07-25 | criteria provided, single submitter | clinical testing | |
Quest Diagnostics Nichols Institute San Juan Capistrano | RCV001564943 | SCV004220908 | uncertain significance | not provided | 2023-04-21 | criteria provided, single submitter | clinical testing | The frequency of this variant in the general population, 0.000013 (2/152206 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. In the published literature, the variant has been reported in an individual with breast cancer (PMID: 32091409 (2020)). Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is damaging. Based on the available information, we are unable to determine the clinical significance of this variant. |
All of Us Research Program, |
RCV003998066 | SCV004840935 | uncertain significance | Lynch syndrome | 2023-10-30 | criteria provided, single submitter | clinical testing | This missense variant replaces glutamine with glutamic acid at codon 327 of the MLH1 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MLH1-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. |