12-132626209-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_006231.4(POLE):​c.6439C>A​(p.Pro2147Thr) variant causes a missense change involving the alteration of a 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 (★★).

Frequency

Genomes: not found (cov: 33)

Consequence

POLE
NM_006231.4 missense

Scores

6
10
3

Clinical Significance

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

Conservation

PhyloP100: 9.66
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.867

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
POLENM_006231.4 linkc.6439C>A p.Pro2147Thr missense_variant Exon 46 of 49 ENST00000320574.10 NP_006222.2 Q07864
POLEXM_011534795.4 linkc.6439C>A p.Pro2147Thr missense_variant Exon 46 of 48 XP_011533097.1
POLEXM_011534797.4 linkc.5518C>A p.Pro1840Thr missense_variant Exon 38 of 40 XP_011533099.1
POLEXM_011534802.4 linkc.3427C>A p.Pro1143Thr missense_variant Exon 22 of 24 XP_011533104.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
POLEENST00000320574.10 linkc.6439C>A p.Pro2147Thr missense_variant Exon 46 of 49 1 NM_006231.4 ENSP00000322570.5 Q07864

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Cov.:
32
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
Aug 23, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. 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 POLE protein function. ClinVar contains an entry for this variant (Variation ID: 2447930). This variant has not been reported in the literature in individuals affected with POLE-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 2147 of the POLE protein (p.Pro2147Thr). -

Hereditary cancer-predisposing syndrome Uncertain:1
Dec 16, 2022
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The p.P2147T variant (also known as c.6439C>A), located in coding exon 46 of the POLE gene, results from a C to A substitution at nucleotide position 6439. The proline at codon 2147 is replaced by threonine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. 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
Uncertain
0.53
BayesDel_addAF
Uncertain
0.16
D
BayesDel_noAF
Uncertain
-0.010
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.75
D;.
Eigen
Pathogenic
0.88
Eigen_PC
Pathogenic
0.83
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.93
D;D
M_CAP
Benign
0.014
T
MetaRNN
Pathogenic
0.87
D;D
MetaSVM
Uncertain
-0.12
T
MutationAssessor
Pathogenic
3.1
M;.
PrimateAI
Uncertain
0.51
T
PROVEAN
Pathogenic
-6.0
D;D
REVEL
Uncertain
0.54
Sift
Benign
0.041
D;D
Sift4G
Uncertain
0.034
D;D
Polyphen
0.94
P;.
Vest4
0.93
MutPred
0.58
Gain of phosphorylation at P2147 (P = 0.0429);.;
MVP
0.73
MPC
0.47
ClinPred
0.99
D
GERP RS
4.8
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.8
Varity_R
0.54
gMVP
0.74

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-133202795; API