rs1480510431

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_006231.4(POLE):​c.25C>T​(p.Arg9Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000148 in 1,349,932 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign 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. R9Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000015 ( 0 hom. )

Consequence

POLE
NM_006231.4 missense

Scores

1
1
17

Clinical Significance

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

Conservation

PhyloP100: -0.652

Publications

0 publications found
Variant links:
Genes affected
POLE (HGNC:9177): (DNA polymerase epsilon, catalytic subunit) This gene encodes the catalytic subunit of DNA polymerase epsilon. The enzyme is involved in DNA repair and chromosomal DNA replication. Mutations in this gene have been associated with colorectal cancer 12 and facial dysmorphism, immunodeficiency, livedo, and short stature. [provided by RefSeq, Sep 2013]
POLE Gene-Disease associations (from GenCC):
  • POLE-related polyposis and colorectal cancer syndrome
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • colorectal cancer, susceptibility to, 12
    Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • facial dysmorphism-immunodeficiency-livedo-short stature syndrome
    Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • intrauterine growth retardation, metaphyseal dysplasia, adrenal hypoplasia congenita, genital anomalies, and immunodeficiency
    Inheritance: AR Classification: STRONG Submitted by: G2P
  • IMAGe syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Polymerase proofreading-related adenomatous polyposis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.04798752).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
POLENM_006231.4 linkc.25C>T p.Arg9Trp missense_variant Exon 1 of 49 ENST00000320574.10 NP_006222.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
POLEENST00000320574.10 linkc.25C>T p.Arg9Trp missense_variant Exon 1 of 49 1 NM_006231.4 ENSP00000322570.5

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.0000186
AC:
2
AN:
107566
AF XY:
0.0000167
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 FIN exome
AF:
0.000142
Gnomad NFE exome
AF:
0.0000255
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000148
AC:
2
AN:
1349932
Hom.:
0
Cov.:
32
AF XY:
0.00000300
AC XY:
2
AN XY:
666172
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
28654
American (AMR)
AF:
0.00
AC:
0
AN:
32774
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
24238
East Asian (EAS)
AF:
0.00
AC:
0
AN:
32312
South Asian (SAS)
AF:
0.00
AC:
0
AN:
75660
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
37006
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4106
European-Non Finnish (NFE)
AF:
0.00000189
AC:
2
AN:
1059266
Other (OTH)
AF:
0.00
AC:
0
AN:
55916
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
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Uncertain:1
Sep 23, 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 tryptophan, which is neutral and slightly polar, at codon 9 of the POLE protein (p.Arg9Trp). 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 POLE-related conditions. ClinVar contains an entry for this variant (Variation ID: 473541). An algorithm developed to predict the effect of missense changes on protein structure and function outputs the following: PolyPhen-2: "Not Available". The tryptophan amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Hereditary cancer-predisposing syndrome Uncertain:1
Aug 05, 2021
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The p.R9W variant (also known as c.25C>T), located in coding exon 1 of the POLE gene, results from a C to T substitution at nucleotide position 25. The arginine at codon 9 is replaced by tryptophan, an amino acid with dissimilar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.17
BayesDel_addAF
Benign
-0.18
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
15
DANN
Benign
0.92
DEOGEN2
Benign
0.039
T;.
Eigen
Benign
-1.4
Eigen_PC
Benign
-1.4
FATHMM_MKL
Benign
0.012
N
LIST_S2
Benign
0.71
T;T
M_CAP
Uncertain
0.14
D
MetaRNN
Benign
0.048
T;T
MetaSVM
Benign
-0.95
T
MutationAssessor
Benign
1.6
L;.
PhyloP100
-0.65
PrimateAI
Pathogenic
0.85
D
PROVEAN
Benign
0.41
N;N
REVEL
Benign
0.029
Sift
Benign
0.18
T;T
Sift4G
Benign
0.18
T;T
Polyphen
0.0010
B;B
Vest4
0.14
MutPred
0.35
Loss of methylation at R9 (P = 0.021);Loss of methylation at R9 (P = 0.021);
MVP
0.16
MPC
0.21
ClinPred
0.080
T
GERP RS
-2.8
PromoterAI
0.022
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.1
Varity_R
0.047
gMVP
0.42
Mutation Taster
=90/10
polymorphism

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: rs1480510431; hg19: chr12-133263877; API