Genetic Variant POLD1:p.Ala320Ser (chr19-50402729-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002691.4(POLD1):c.958G>T(p.Ala320Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A320T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

POLD1
NM_002691.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 4.93

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

mandibular hypoplasia-deafness-progeroid syndrome
Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp
POLD1-related polyposis and colorectal cancer syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
colorectal cancer, susceptibility to, 10
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
Polymerase proofreading-related adenomatous polyposis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
immunodeficiency 120
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
non-severe combined immunodeficiency due to polymerase delta deficiency
Inheritance: AR Classification: LIMITED Submitted by: ClinGen

POLD1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002691.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
POLD1	NM_002691.4	MANE Select	c.958G>T	p.Ala320Ser	missense	Exon 8 of 27	NP_002682.2	P28340
POLD1	NM_001308632.1		c.958G>T	p.Ala320Ser	missense	Exon 7 of 26	NP_001295561.1	M0R2B7
POLD1	NM_001256849.1		c.958G>T	p.Ala320Ser	missense	Exon 8 of 27	NP_001243778.1	P28340

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
POLD1	ENST00000440232.7	TSL:1 MANE Select	c.958G>T	p.Ala320Ser	missense	Exon 8 of 27	ENSP00000406046.1	P28340
POLD1	ENST00000595904.6	TSL:1	c.958G>T	p.Ala320Ser	missense	Exon 8 of 27	ENSP00000472445.1	M0R2B7
POLD1	ENST00000599857.7	TSL:1	c.958G>T	p.Ala320Ser	missense	Exon 8 of 27	ENSP00000473052.1	P28340

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1440228

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

712584

African (AFR)

AF:

0.00

AC:

AN:

33056

American (AMR)

AF:

0.00

AC:

AN:

44006

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25734

East Asian (EAS)

AF:

0.00

AC:

AN:

39142

South Asian (SAS)

AF:

0.00

AC:

AN:

85374

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51910

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4216

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1097666

Other (OTH)

AF:

0.00

AC:

AN:

59124

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Colorectal cancer, susceptibility to, 10 (1)

Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.065

BayesDel_noAF

Benign

-0.33

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

Eigen

Uncertain

0.24

Eigen_PC

Benign

0.22

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.66

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

PhyloP100

4.9

PrimateAI

Uncertain

0.78

PROVEAN

Uncertain

-2.7

REVEL

Benign

0.24

Sift

Benign

0.052

Sift4G

Benign

0.074

Polyphen

0.90

Vest4

0.61

MutPred

0.53

Loss of catalytic residue at A320 (P = 0.0123)

MVP

0.47

MPC

0.70

ClinPred

0.95

GERP RS

3.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.76

gMVP

0.61

Mutation Taster

=59/41

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over