rs750155990

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_002691.4(POLD1):​c.964C>A​(p.Arg322Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 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. R322G) 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

5
8
6

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.26

Publications

0 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):
  • 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: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
  • mandibular hypoplasia-deafness-progeroid syndrome
    Inheritance: AD, AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp, Ambry Genetics, Orphanet, G2P
  • 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.797

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
POLD1NM_002691.4 linkc.964C>A p.Arg322Ser missense_variant Exon 8 of 27 ENST00000440232.7 NP_002682.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
POLD1ENST00000440232.7 linkc.964C>A p.Arg322Ser missense_variant Exon 8 of 27 1 NM_002691.4 ENSP00000406046.1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Data not reliable, filtered out with message: AC0
AF:
0.00
AC:
0
AN:
1438840
Hom.:
0
Cov.:
34
AF XY:
0.00
AC XY:
0
AN XY:
711616
African (AFR)
AF:
0.00
AC:
0
AN:
33038
American (AMR)
AF:
0.00
AC:
0
AN:
43922
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25636
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39140
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85214
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52076
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4174
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1096552
Other (OTH)
AF:
0.00
AC:
0
AN:
59088
GnomAD4 genome
Cov.:
33

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
May 13, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 322 of the POLD1 protein (p.Arg322Ser). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with POLD1-related conditions. 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
Pathogenic
0.99
BayesDel_addAF
Uncertain
0.024
T
BayesDel_noAF
Benign
-0.20
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.50
D;.;.;D
Eigen
Uncertain
0.35
Eigen_PC
Uncertain
0.25
FATHMM_MKL
Benign
0.62
D
LIST_S2
Pathogenic
0.99
.;.;D;D
M_CAP
Benign
0.043
D
MetaRNN
Pathogenic
0.80
D;D;D;D
MetaSVM
Benign
-1.1
T
MutationAssessor
Uncertain
2.7
M;.;.;M
PhyloP100
2.3
PrimateAI
Pathogenic
0.80
T
PROVEAN
Pathogenic
-5.5
D;.;.;.
REVEL
Benign
0.20
Sift
Uncertain
0.010
D;.;.;.
Sift4G
Uncertain
0.052
T;D;D;T
Polyphen
0.90
P;.;.;P
Vest4
0.72
MutPred
0.58
Gain of glycosylation at R322 (P = 0.0687);Gain of glycosylation at R322 (P = 0.0687);Gain of glycosylation at R322 (P = 0.0687);Gain of glycosylation at R322 (P = 0.0687);
MVP
0.71
MPC
0.73
ClinPred
0.98
D
GERP RS
2.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.90
gMVP
0.87
Mutation Taster
=37/63
disease causing

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

Other links and lift over

dbSNP: rs750155990; hg19: chr19-50905992; API