rs367902268
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PP3_Moderate
The NM_006231.4(POLE):c.1993C>T(p.Arg665Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,613,592 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_006231.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 2 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000197 AC: 3AN: 152148Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000159 AC: 4AN: 251318Hom.: 0 AF XY: 0.0000294 AC XY: 4AN XY: 135850
GnomAD4 exome AF: 0.0000281 AC: 41AN: 1461444Hom.: 0 Cov.: 33 AF XY: 0.0000303 AC XY: 22AN XY: 726940
GnomAD4 genome AF: 0.0000197 AC: 3AN: 152148Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2AN XY: 74328
ClinVar
Submissions by phenotype
not provided Uncertain:2
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 665 of the POLE protein (p.Arg665Trp). This variant is present in population databases (rs367902268, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with POLE-related conditions. ClinVar contains an entry for this variant (Variation ID: 240414). 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 POLE 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. -
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: 33057194, 20951805, 28427513, 35982159) -
Colorectal cancer, susceptibility to, 12 Uncertain:1
The POLE c.1993C>T (p.Arg665Trp) missense change has a maximum subpopulation frequency of 0.0065% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org). The in silico tool REVEL is inconclusive about a pathogenic or benign effect of this variant on protein function, and to our knowledge functional studies have not been performed. This variant has been identified in a hypermutated tumor (PMID: 29056344). To our knowledge, this variant has not been reported in individuals with POLE-related disease. In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -
Hereditary cancer-predisposing syndrome Uncertain:1
The p.R665W variant (also known as c.1993C>T), located in coding exon 18 of the POLE gene, results from a C to T substitution at nucleotide position 1993. The arginine at codon 665 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Based on the available evidence, the clinical significance of this variant remains unclear. -
Facial dysmorphism-immunodeficiency-livedo-short stature syndrome;CN280943:Familial colorectal cancer Other:1
Variant interpreted as Uncertain significance and reported on 12-14-2020 by Lab Invitae. GenomeConnect-Invitae Patient Insights Network assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. Registry team members make no attempt to reinterpret the clinical significance of the variant. Phenotypic details are available under supporting information. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at