rs75874199

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_002691.4(POLD1):c.2628C>T(p.Ile876=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000929 in 1,613,366 control chromosomes in the GnomAD database, including 25 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0015 ( 12 hom., cov: 33)

Exomes 𝑓: 0.00087 ( 13 hom. )

Consequence

POLD1
NM_002691.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: -1.72

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 -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.49).

BP6

Variant 19-50415501-C-T is Benign according to our data. Variant chr19-50415501-C-T is described in ClinVar as [Benign]. Clinvar id is 220703.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-50415501-C-T is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-1.72 with no splicing effect.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.00146 (222/152350) while in subpopulation EAS AF= 0.0374 (194/5182). AF 95% confidence interval is 0.0331. There are 12 homozygotes in gnomad4. There are 118 alleles in male gnomad4 subpopulation. This position pass quality control queck.

BS2

High AC in GnomAd at 221 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POLD1	NM_002691.4 linkuse as main transcript	c.2628C>T	p.Ile876=	synonymous_variant	21/27	ENST00000440232.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POLD1	ENST00000440232.7 linkuse as main transcript	c.2628C>T	p.Ile876=	synonymous_variant	21/27	1	NM_002691.4	P1

Frequencies

GnomAD3 genomes

AF:

0.00145

AC:

221

AN:

152232

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0374

Gnomad SAS

AF:

0.00165

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.00259

AC:

646

AN:

249600

Hom.:

AF XY:

0.00255

AC XY:

345

AN XY:

135524

show subpopulations

Gnomad AFR exome

AF:

0.000125

Gnomad AMR exome

AF:

0.0000870

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0325

Gnomad SAS exome

AF:

0.00105

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000444

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.000874

AC:

1277

AN:

1461016

Hom.:

Cov.:

AF XY:

0.000929

AC XY:

675

AN XY:

726826

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0234

Gnomad4 SAS exome

AF:

0.00139

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000360

Gnomad4 OTH exome

AF:

0.00296

GnomAD4 genome

AF:

0.00146

AC:

222

AN:

152350

Hom.:

Cov.:

AF XY:

0.00158

AC XY:

118

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000588

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0374

Gnomad4 SAS

AF:

0.00166

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000380

Hom.:

Bravo

AF:

0.00158

Asia WGS

AF:

0.0130

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:5

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	Mar 20, 2017	- -
Benign, no assertion criteria provided	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	The POLD1 p.Ile876= variant was not identified in the literature nor was it identified in the Cosmic database. The variant was identified in dbSNP (ID: rs75874199) as "With Benign allele ", and in ClinVar database (classified as benign by Invitae, GeneDx, Ambry Genetics, and three clinical laboratories; as likely benign by one clinical laboratory). The variant was identified in control databases in 662 of 275698 chromosomes (12 homozygous) at a frequency of 0.002 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: African in 4 of 23876 chromosomes (freq: 0.0002), Other in 8 of 6434 chromosomes (freq: 0.001), Latino in 3 of 34348 chromosomes (freq: 0.00009), European in 6 of 125698 chromosomes (freq: 0.00005), East Asian in 608 of 18808 chromosomes (freq: 0.03), and South Asian in 33 of 30756 chromosomes (freq: 0.001), while the variant was not observed in the Ashkenazi Jewish, and Finnish, populations. The p.Ile876= 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. In addition, 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 this variant meets our laboratory's criteria to be classified as benign. -
Benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Jul 22, 2016	- -
Benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital	Aug 15, 2023	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 18, 2015	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Hereditary cancer-predisposing syndrome

Benign:3

Benign, criteria provided, single submitter	curation	Sema4, Sema4	May 12, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Ambry Genetics	May 21, 2015	This alteration is classified as 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, no assertion criteria provided	clinical testing	True Health Diagnostics	Sep 29, 2017	- -

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jul 28, 2017	Variant summary: The POLD1 c.2628C>T (p.Ile876Ile) variant involves the alteration of a non-conserved nucleotide causing a synonymous change and 5/5 splice prediction tools predict no significant impact on normal splicing. ESE finder predicts that this variant alters binding of SRp55 and SF2/ASF. However, these predictions have yet to be confirmed by functional studies. This variant was found in 271/116036 control chromosomes (3 homozygotes) at a frequency of 0.0023355, which is approximately 164 times the estimated maximal expected allele frequency of a pathogenic POLD1 variant (0.0000142), suggesting this variant is likely a benign polymorphism. It is more common in East Asian subpopulation with an allele frequency of 0.0293 (248/8464 chromosomes). In addition, multiple clinical diagnostic laboratories classified this variant as benign. The variant of interest has not, to our knowledge, been reported in affected individuals via publications. Taken together, this variant is classified as benign. -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Jun 22, 2022	- -

Colorectal cancer, susceptibility to, 10

Benign:2

Benign, criteria provided, single submitter	clinical testing	KCCC/NGS Laboratory, Kuwait Cancer Control Center	Jul 07, 2023	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Feb 01, 2024	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.49

Cadd

Benign

1.8

Dann

Benign

0.91

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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