12-132676174-A-C

Position:

chr12-132676174-A-C

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_StrongBP6

The NM_006231.4(POLE):c.940T>G(p.Ser314Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000657 in 1,613,304 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000062 ( 0 hom. )

Consequence

POLE
NM_006231.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:4

Conservation

PhyloP100: 7.41

Variant links:

Genes affected

POLE (HGNC:9177): (DNA polymerase epsilon, catalytic subunit) This gene encodes the catalytic subunit of DNA polymerase epsilon. The enzyme is involved in DNA repair and chromosomal DNA replication. Mutations in this gene have been associated with colorectal cancer 12 and facial dysmorphism, immunodeficiency, livedo, and short stature. [provided by RefSeq, Sep 2013]

POLE links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.028195262).

BP6

Variant 12-132676174-A-C is Benign according to our data. Variant chr12-132676174-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 224589.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=6, Benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
POLE	NM_006231.4 linkuse as main transcript	c.940T>G	p.Ser314Ala	missense_variant	10/49	ENST00000320574.10	NP_006222.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
POLE	ENST00000320574.10 linkuse as main transcript	c.940T>G	p.Ser314Ala	missense_variant	10/49	1	NM_006231.4	ENSP00000322570	P1

Frequencies

GnomAD3 genomes

AF:

0.0000985

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00317

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000108

AC:

AN:

250680

Hom.:

AF XY:

0.0000812

AC XY:

AN XY:

135536

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00239

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000623

AC:

AN:

1461076

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

726878

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00245

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000144

Gnomad4 OTH exome

AF:

0.000149

GnomAD4 genome

AF:

0.0000985

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00317

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000297

Hom.:

Bravo

AF:

0.0000680

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Colorectal cancer, susceptibility to, 12

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Myriad Genetics, Inc.	Apr 19, 2023	This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
Uncertain significance, criteria provided, single submitter	clinical testing	Counsyl	Jan 25, 2017	- -
Uncertain significance, criteria provided, single submitter	clinical testing	St. Jude Molecular Pathology, St. Jude Children's Research Hospital	Apr 22, 2021	The POLE c.940T>G (p.Ser314Ala) missense change has a maximum non-founder population frequency of 0.0016% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/variant/12-133252760-A-C?dataset=gnomad_r2_1). Five of seven in silico tools predict a benign effect of this variant on protein function (BP4), but to our knowledge these predictions have not been confirmed by functional assays. This variant has been reported in an individual with early-onset colorectal cancer and a strong family history of colorectal cancer and familial adenomatous polyposis (PMID: 32567205) and an individual with endometrial carcinoma (PMID: 31866764). In summary, this variant meets criteria to be classified as of uncertain significance based on the ACMG/AMP criteria: BP4. -

Hereditary cancer-predisposing syndrome

Uncertain:2Benign:1

Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	Feb 13, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Aug 16, 2022	The p.S314A variant (also known as c.940T>G), located in coding exon 10 of the POLE gene, results from a T to G substitution at nucleotide position 940. The serine at codon 314 is replaced by alanine, an amino acid with similar properties. This alteration was identified in a patient diagnosed with early onset colon cancer and reports numerous relatives diagnosed with colon cancer and/or familial adenomatous polyposis; of note, consanguinity is present in this family, but the degree of relationship was not documented and the genetic test results for other relatives were not provided (Siraj AK et al. Mol Genet Genomic Med. 2020 08;8:e1368). This alteration has also been identified in individuals diagnosed with ovarian, endometrial, prostate, and/or pancreatic cancers (Shirts BH et al. Genet. Med. 2016 Oct;18:974-81; Siraj AK et al. Cancer Cell Int. 2019 Dec;19:334; Song H et al. J Med Genet. 2021 05;58:305-313). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Uncertain significance, criteria provided, single submitter	clinical testing	University of Washington Department of Laboratory Medicine, University of Washington	Nov 20, 2015	- -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Oct 17, 2019	In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 31866764, 24410847, 26845104, 27720647, 32567205) -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -

Familial colorectal cancer

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Mendelics

Jul 02, 2018

- -

POLE-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Dec 07, 2023

The POLE c.940T>G variant is predicted to result in the amino acid substitution p.Ser314Ala. This variant was reported in an individual with endometrial carcinoma (Siraj et al 2019. PubMed ID: 31866764) and in another individual with a personal history of early onset colorectal cancer and significant family history of colorectal cancer/familial adenomatous polyposis (Fig 1 in Siraj AK et al 2020. PubMed ID: 32567205). This variant is reported in 0.23% of alleles in individuals of Ashkenazi Jewish descent in gnomAD and is reported with conflicting interpretations of benign to variant of uncertain significance in ClinVar (https://www.ncbi.nlm.nih.gov/clinvar/variation/224589/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Quest Diagnostics Nichols Institute San Juan Capistrano

Jul 09, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.20

T;.

Eigen

Benign

0.060

Eigen_PC

Benign

0.21

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.80

T;T

M_CAP

Benign

0.0088

MetaRNN

Benign

0.028

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

2.0

M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-2.0

N;N

REVEL

Benign

0.13

Sift

Benign

0.14

T;T

Sift4G

Benign

0.12

T;T

Polyphen

0.012

B;B

Vest4

0.18

MVP

0.32

MPC

0.20

ClinPred

0.081

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.21

gMVP

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over