rs5744801
Variant summary
Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2
The NM_006231.4(POLE):c.2106G>T(p.Gly702Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000356 in 1,612,620 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. G702G) has been classified 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 -21 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00182 AC: 277AN: 152216Hom.: 2 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.000552 AC: 138AN: 250120 AF XY: 0.000399 show subpopulations
GnomAD4 exome AF: 0.000203 AC: 297AN: 1460286Hom.: 1 Cov.: 31 AF XY: 0.000162 AC XY: 118AN XY: 726332 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00182 AC: 277AN: 152334Hom.: 2 Cov.: 32 AF XY: 0.00166 AC XY: 124AN XY: 74500 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Benign:5
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See Variant Classification Assertion Criteria. -
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POLE: BP4, BP7 -
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not specified Benign:3
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Variant summary: POLE c.2106G>T alters a non-conserved nucleotide resulting in a synonymous change. 4/5 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00055 in 250120 control chromosomes, predominantly at a frequency of 0.0074 within the African or African-American subpopulation in the gnomAD database, including 1 homozygote. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 521 fold of the estimated maximal expected allele frequency for a pathogenic variant in POLE causing Colorectal Cancer phenotype (1.4e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African or African-American origin. To our knowledge, no occurrence of c.2106G>T in individuals affected with Colorectal Cancer and no experimental evidence demonstrating its impact on protein function have been reported. Six submitters have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign (2x) /likely benign (4x). Based on the evidence outlined above, the variant was classified as benign. -
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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Polymerase proofreading-related adenomatous polyposis;C3896578:Familial colorectal cancer type X Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at