rs143938822
Variant summary
Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1
The NM_006231.4(POLE):c.561C>T(p.Tyr187Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000313 in 1,613,322 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 Likely benign (★★).
Frequency
Consequence
NM_006231.4 synonymous
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: Benign. The variant received -17 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000197 AC: 30AN: 152186Hom.: 0 Cov.: 33 show subpopulations
GnomAD2 exomes AF: 0.000211 AC: 53AN: 251330 AF XY: 0.000214 show subpopulations
GnomAD4 exome AF: 0.000325 AC: 475AN: 1461136Hom.: 0 Cov.: 31 AF XY: 0.000325 AC XY: 236AN XY: 726734 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.000197 AC: 30AN: 152186Hom.: 0 Cov.: 33 AF XY: 0.000229 AC XY: 17AN XY: 74334 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Benign:5
POLE: BP4, BP7 -
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not specified Benign:3
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Hereditary cancer-predisposing syndrome Benign:2
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. -
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Colorectal cancer, susceptibility to, 12 Benign:1
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Polymerase proofreading-related adenomatous polyposis Benign:1
The POLE p.Tyr187= variant was not identified in the literature. The variant was identified in dbSNP (rs143938822) as “with likely benign allele” and ClinVar (classified as likely benign by Ambry Genetics, GeneDx, PreventionGenetics and Quest Diagnostics and Benign by Invitae and 1 other submitter). The variant was identified in control databases in 60 of 282,732 chromosomes at a frequency of 0.0002 increasing the likelihood this could be a low frequency benign variant (Genome Aggregation Database Feb 27, 2017). The variant was observed in the following populations: Ashkenazi Jewish in 13 of 10,366 chromosomes (freq: 0.001), Other in 2 of 7222 chromosomes (freq: 0.0003), European in 35 of 129,070 chromosomes (freq: 0.0003), Latino in 7 of 35,426 chromosomes (freq: 0.0002), African in 3 of 24,966 chromosomes (freq: 0.0001), while the variant was not observed in the East Asian, Finnish and South Asian populations. The p.Tyr187= variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. The variant occurs at a non-highly conserved nucleotide outside of the splicing consensus sequence and in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer) do not predict a difference in splicing. In summary, based on the above information the clinical significance of this variant cannot be determined with certainty at this time although we would lean towards a more benign role for this variant. This variant is classified as likely benign. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at