rs1060501847

Variant summary

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

The NM_002691.4(POLD1):​c.2122G>A​(p.Val708Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,607,434 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. V708G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

POLD1
NM_002691.4 missense

Scores

2
9
7

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 8.97

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 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

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
POLD1
NM_002691.4
MANE Select
c.2122G>Ap.Val708Met
missense
Exon 17 of 27NP_002682.2
POLD1
NM_001308632.1
c.2200G>Ap.Val734Met
missense
Exon 16 of 26NP_001295561.1
POLD1
NM_001256849.1
c.2122G>Ap.Val708Met
missense
Exon 17 of 27NP_001243778.1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
POLD1
ENST00000440232.7
TSL:1 MANE Select
c.2122G>Ap.Val708Met
missense
Exon 17 of 27ENSP00000406046.1
POLD1
ENST00000595904.6
TSL:1
c.2200G>Ap.Val734Met
missense
Exon 17 of 27ENSP00000472445.1
POLD1
ENST00000599857.7
TSL:1
c.2122G>Ap.Val708Met
missense
Exon 17 of 27ENSP00000473052.1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152252
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1455182
Hom.:
0
Cov.:
32
AF XY:
0.00000138
AC XY:
1
AN XY:
722612
show subpopulations
African (AFR)
AF:
0.0000599
AC:
2
AN:
33368
American (AMR)
AF:
0.00
AC:
0
AN:
44524
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26070
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39520
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86068
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52578
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5578
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1107450
Other (OTH)
AF:
0.00
AC:
0
AN:
60026
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152252
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74386
show subpopulations
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.0000241
AC:
1
AN:
41466
American (AMR)
AF:
0.00
AC:
0
AN:
15292
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5194
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10630
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68044
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.375
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Colorectal cancer, susceptibility to, 10 (1)
-
1
-
Hereditary cancer-predisposing syndrome (1)
-
1
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.29
BayesDel_addAF
Uncertain
0.055
T
BayesDel_noAF
Benign
-0.16
CADD
Pathogenic
28
DANN
Uncertain
1.0
DEOGEN2
Benign
0.29
T
Eigen
Uncertain
0.67
Eigen_PC
Uncertain
0.65
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Benign
0.048
D
MetaRNN
Uncertain
0.60
D
MetaSVM
Benign
-0.90
T
MutationAssessor
Pathogenic
2.9
M
PhyloP100
9.0
PrimateAI
Uncertain
0.75
T
PROVEAN
Uncertain
-2.8
D
REVEL
Benign
0.25
Sift
Benign
0.034
D
Sift4G
Uncertain
0.028
D
Polyphen
0.81
P
Vest4
0.56
MutPred
0.57
Loss of catalytic residue at V708 (P = 0.0021)
MVP
0.51
MPC
1.6
ClinPred
0.97
D
GERP RS
4.4
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.8
Varity_R
0.66
gMVP
0.75
Mutation Taster
=9/91
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: rs1060501847; hg19: chr19-50912891; API