rs866548835
Variant summary
Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4BP6
The NM_006231.4(POLE):c.6775C>T(p.Arg2259Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,000 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2259Q) 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: Likely_benign. The variant received -2 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
POLE | NM_006231.4 | c.6775C>T | p.Arg2259Trp | missense_variant | Exon 49 of 49 | ENST00000320574.10 | NP_006222.2 | |
POLE | XM_011534795.4 | c.*397C>T | downstream_gene_variant | XP_011533097.1 | ||||
POLE | XM_011534797.4 | c.*397C>T | downstream_gene_variant | XP_011533099.1 | ||||
POLE | XM_011534802.4 | c.*397C>T | downstream_gene_variant | XP_011533104.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.0000120 AC: 3AN: 250594 AF XY: 0.0000148 show subpopulations
GnomAD4 exome AF: 0.0000130 AC: 19AN: 1460794Hom.: 0 Cov.: 29 AF XY: 0.0000193 AC XY: 14AN XY: 726808 show subpopulations
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152206Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2AN XY: 74356 show subpopulations
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:1
POLE: BP4 -
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 2259 of the POLE protein (p.Arg2259Trp). This variant is present in population databases (no rsID available, gnomAD 0.01%). This missense change has been observed in individual(s) with breast cancer (PMID: 35534704). ClinVar contains an entry for this variant (Variation ID: 421275). 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. -
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; Observed in an individual with breast and thyroid cancer (Pinheiro et al., 2020); This variant is associated with the following publications: (PMID: 28873162, 32443704) -
Hereditary cancer Benign:1
- -
Hereditary cancer-predisposing syndrome Benign:1
This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at