rs116260568
Variant summary
Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.
The NM_006231.4(POLE):c.1735C>T(p.Arg579Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000446 in 1,614,154 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R579H) has been classified as Uncertain significance.
Frequency
Consequence
NM_006231.4 missense
Scores
Clinical Significance
Conservation
Publications
- POLE-related polyposis and colorectal cancer syndromeInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- colorectal cancer, susceptibility to, 12Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
- facial dysmorphism-immunodeficiency-livedo-short stature syndromeInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
- intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiencyInheritance: AR Classification: STRONG Submitted by: G2P
- IMAGe syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Polymerase proofreading-related adenomatous polyposisInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
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ACMG classification
Our verdict: Uncertain_significance. The variant received 0 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| POLE | NM_006231.4 | c.1735C>T | p.Arg579Cys | missense_variant | Exon 16 of 49 | ENST00000320574.10 | NP_006222.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| POLE | ENST00000320574.10 | c.1735C>T | p.Arg579Cys | missense_variant | Exon 16 of 49 | 1 | NM_006231.4 | ENSP00000322570.5 |
Frequencies
GnomAD3 genomes AF: 0.0000657 AC: 10AN: 152166Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000398 AC: 10AN: 251482 AF XY: 0.0000221 show subpopulations
GnomAD4 exome AF: 0.0000424 AC: 62AN: 1461872Hom.: 0 Cov.: 31 AF XY: 0.0000440 AC XY: 32AN XY: 727244 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000657 AC: 10AN: 152282Hom.: 0 Cov.: 32 AF XY: 0.0000537 AC XY: 4AN XY: 74454 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:2
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 579 of the POLE protein (p.Arg579Cys). This variant is present in population databases (rs116260568, gnomAD 0.007%). This missense change has been observed in individual(s) with POLE-related conditions (PMID: 33821390). ClinVar contains an entry for this variant (Variation ID: 405728). 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 POLE 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. -
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in an individual with papillary thyroid cancer (PMID: 33821390); This variant is associated with the following publications: (PMID: 29320758, 32169874, 20951805, 33821390) -
Hereditary cancer-predisposing syndrome Uncertain:2
- -
The p.R579C variant (also known as c.1735C>T), located in coding exon 16 of the POLE gene, results from a C to T substitution at nucleotide position 1735. The arginine at codon 579 is replaced by cysteine, an amino acid with highly dissimilar 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. Based on the available evidence, the clinical significance of this variant remains unclear. -
not specified Uncertain:1
Variant summary: POLE c.1735C>T (p.Arg579Cys) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-05 in 251482 control chromosomes. c.1735C>T has not to our knowledge been reported in the literature in individuals affected with POLE-related cancer. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as VUS. -
Colorectal cancer, susceptibility to, 12 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at