Variant chr19-50407408-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The ENST00000440232.7(POLD1):c.1768C>T(p.Leu590Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000689 in 1,450,730 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 Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L590L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

POLD1
ENST00000440232.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.09

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3645346).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
POLD1	NM_002691.4 linkuse as main transcript	c.1768C>T	p.Leu590Phe	missense_variant	14/27	ENST00000440232.7	NP_002682.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
POLD1	ENST00000440232.7 linkuse as main transcript	c.1768C>T	p.Leu590Phe	missense_variant	14/27	1	NM_002691.4	ENSP00000406046	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000419

AC:

AN:

238724

Hom.:

AF XY:

0.00000772

AC XY:

AN XY:

129612

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000930

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.89e-7

AC:

AN:

1450730

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

720196

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

9.05e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Colorectal cancer, susceptibility to, 10

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 09, 2023

This sequence change replaces leucine, which is neutral and non-polar, with phenylalanine, which is neutral and non-polar, at codon 590 of the POLD1 protein (p.Leu590Phe). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with POLD1-related conditions. ClinVar contains an entry for this variant (Variation ID: 239253). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt POLD1 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.52

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.24

T;.;.;T

Eigen

Uncertain

0.36

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.83

.;.;T;D

M_CAP

Benign

0.025

MetaRNN

Benign

0.36

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Uncertain

2.2

M;.;.;M

MutationTaster

Benign

0.92

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-1.7

N;.;.;.

REVEL

Benign

0.12

Sift

Benign

0.048

D;.;.;.

Sift4G

Uncertain

0.050

T;T;T;T

Polyphen

0.74

P;.;.;P

Vest4

0.32

MutPred

0.57

Gain of methylation at K591 (P = 0.0351);Gain of methylation at K591 (P = 0.0351);Gain of methylation at K591 (P = 0.0351);Gain of methylation at K591 (P = 0.0351);

MVP

0.50

MPC

1.4

ClinPred

0.83

GERP RS

4.2

Varity_R

0.22

gMVP

0.40

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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