rs140990974

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_002691.4(POLD1):c.1061C>T(p.Ala354Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000813 in 1,561,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict 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. A354A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00048 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000038 ( 0 hom. )

Consequence

POLD1
NM_002691.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts U:1B:7

Conservation

PhyloP100: 5.37

Variant links:

Genes affected

POLD1 (HGNC:9175): (DNA polymerase delta 1, catalytic subunit) This gene encodes the 125-kDa catalytic subunit of DNA polymerase delta. DNA polymerase delta possesses both polymerase and 3' to 5' exonuclease activity and plays a critical role in DNA replication and repair. Alternatively spliced transcript variants have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 6. [provided by RefSeq, Mar 2012]

POLD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.011082977).

BP6

Variant 19-50403143-C-T is Benign according to our data. Variant chr19-50403143-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 239218.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd at 73 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POLD1	NM_002691.4 linkuse as main transcript	c.1061C>T	p.Ala354Val	missense_variant	9/27	ENST00000440232.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POLD1	ENST00000440232.7 linkuse as main transcript	c.1061C>T	p.Ala354Val	missense_variant	9/27	1	NM_002691.4	P1

Frequencies

GnomAD3 genomes

AF:

0.000480

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00174

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000107

AC:

AN:

167702

Hom.:

AF XY:

0.0000674

AC XY:

AN XY:

89044

show subpopulations

Gnomad AFR exome

AF:

0.00175

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000149

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000383

AC:

AN:

1408878

Hom.:

Cov.:

AF XY:

0.0000287

AC XY:

AN XY:

695968

show subpopulations

Gnomad4 AFR exome

AF:

0.00140

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000369

Gnomad4 OTH exome

AF:

0.0000857

GnomAD4 genome

AF:

0.000479

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.000470

AC XY:

AN XY:

74472

show subpopulations

Gnomad4 AFR

AF:

0.00173

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000129

Hom.:

Bravo

AF:

0.000446

ESP6500AA

AF:

0.00161

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000111

AC:

ClinVar

Significance: Benign/Likely benign

Submissions summary: Uncertain:1Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Uncertain:1Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Jul 19, 2018	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. -
Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	May 18, 2021	- -
Uncertain significance, no assertion criteria provided	clinical testing	True Health Diagnostics	Jan 03, 2018	- -

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 03, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Dec 15, 2022	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Aug 13, 2018

Variant summary: POLD1 c.1061C>T (p.Ala354Val) results in a non-conservative amino acid change located in the exonuclease domain (IPR006133) of the encoded protein sequence. Two of four in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00014 in 191816 control chromosomes (gnomAD). The observed variant frequency is approximately 10 fold of the estimated maximal expected allele frequency for a pathogenic variant in POLD1 causing Colorectal Cancer phenotype (1.4e-05), strongly suggesting that the variant is benign. To our knowledge, no occurrence of c.1061C>T in individuals affected with Colorectal Cancer and no experimental evidence demonstrating its impact on protein function have been reported. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (Likely benign (2x), VUS (2x)). Based on the evidence outlined above, the variant was classified as likely benign. -

POLD1-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Nov 07, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Colorectal cancer, susceptibility to, 10

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Feb 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.60

BayesDel_noAF

Benign

-0.66

Cadd

Benign

Dann

Benign

0.59

DEOGEN2

Benign

0.10

T;.;.;T

Eigen

Benign

-0.61

Eigen_PC

Benign

-0.35

FATHMM_MKL

Benign

0.67

M_CAP

Benign

0.0071

MetaRNN

Benign

0.011

T;T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-2.8

N;.;.;N

MutationTaster

Benign

0.88

PrimateAI

Uncertain

0.59

PROVEAN

Benign

3.2

N;.;.;.

REVEL

Benign

0.11

Sift

Benign

1.0

T;.;.;.

Sift4G

Benign

1.0

T;T;T;T

Polyphen

0.0080

B;.;.;B

Vest4

0.14

MVP

0.40

MPC

0.20

ClinPred

0.072

GERP RS

3.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.2

Varity_R

0.15

gMVP

0.66

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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