Total submissions: 3
| Submitter | RCV | SCV | Clinical significance | Condition | Last evaluated | Review status | Method | Comment |
|---|---|---|---|---|---|---|---|---|
| Ambry Genetics | RCV001011314 | SCV001171619 | uncertain significance | Hereditary cancer-predisposing syndrome | 2022-11-30 | criteria provided, single submitter | clinical testing | The p.K465R variant (also known as c.1394A>G), located in coding exon 11 of the POT1 gene, results from an A to G substitution at nucleotide position 1394. The lysine at codon 465 is replaced by arginine, an amino acid with highly similar properties. This amino acid position is 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. |
| Labcorp Genetics |
RCV001211702 | SCV001383255 | uncertain significance | Tumor predisposition syndrome 3 | 2025-01-23 | criteria provided, single submitter | clinical testing | This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 465 of the POT1 protein (p.Lys465Arg). This variant is present in population databases (rs369417655, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with POT1-related conditions. ClinVar contains an entry for this variant (Variation ID: 819078). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt POT1 protein function with a negative predictive value of 80%. 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. |
| Quest Diagnostics Nichols Institute San Juan Capistrano | RCV003478610 | SCV004219088 | uncertain significance | not provided | 2022-07-23 | criteria provided, single submitter | clinical testing | The variant has not been reported in the published literature. The frequency of this variant in the general population, 0.000054 (1/18388 chromosomes, http://gnomad.broadinstitute.org), is uninformative in assessment of its pathogenicity. 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 benign. Based on the available information, we are unable to determine the clinical significance of this variant. |