Total submissions: 3
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV000215885 | SCV000278459 | uncertain significance | Hereditary cancer-predisposing syndrome | 2025-03-11 | criteria provided, single submitter | clinical testing | The p.K311N variant (also known as c.933G>T), located in coding exon 11 of the MLH1 gene, results from a G to T substitution at nucleotide position 933. The lysine at codon 311 is replaced by asparagine, 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. Based on the available evidence, the clinical significance of this variant remains unclear. |
| Labcorp Genetics |
RCV001854714 | SCV002221104 | uncertain significance | Hereditary nonpolyposis colorectal neoplasms | 2024-06-04 | criteria provided, single submitter | clinical testing | This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 311 of the MLH1 protein (p.Lys311Asn). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with MLH1-related conditions (PMID: 31391288). ClinVar contains an entry for this variant (Variation ID: 233984). 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) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on MLH1 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. |
| Gene |
RCV005241350 | SCV005889187 | uncertain significance | not provided | 2024-09-11 | criteria provided, single submitter | clinical testing | Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 31391288, 22753075) |