POLE c.1260C>T, p.Gly420=

NM_006231.4:c.1260C>T

Classification Summary

Likely Benign

NM_006231.4:c.1260C>T is a synonymous POLE variant with extremely low population frequency, computational evidence for no impact, and benign classifications from reputable sources. Applying PM2 (Moderate) and BP4, BP6, BP7 (Supporting) supports a Likely Benign classification.

Population Frequency
0.00141%
Low Frequency
ClinVar Classification
Likely Benign
0 publications
REVEL Score
N/A
Not Available
COSMIC Recurrence
0 occurrences
No Criteria Applied
Classification Evidence
Very Strong (PVS)
None applied
Strong (PS/BS)
None applied
Moderate (PM/BA)
PM2
Supporting (PP/BP)
BP4 BP6 BP7
Created: 2025-05-15T11:52:26.855791

Genetic Information

Gene & Transcript Details
Gene
POLE
Transcript
NM_006231.4 MANE Select
Total Exons
49
Strand
Reverse (−)
Reference Sequence
NC_000012.11
Alternative Transcripts
ID Status Details
NM_006231.2 Alternative 49 exons | Reverse
NM_006231.3 RefSeq Select 49 exons | Reverse
Variant Details
HGVS Notation
NM_006231.4:c.1260C>T
Protein Change
G420=
Location
Exon 13 (Exon 13 of 49)
13
5' Exon Structure (49 total) 3'
Functional Consequence
Loss of Function
Related Variants
Variant interpretation based on transcript NM_006231.4

Clinical Evidence

Population Frequency
Global Frequency
0.00141%
Rare
Highest in Population
Remaining individuals
0.0138%
Low Frequency
Global: 0.00141%
Remaining individuals: 0.0138%
0%
0.0005%
0.001%
0.01%
0.05%
1%+
Allele Information
Total: 282712 Alt: 4 Homozygotes: 0
ACMG Criteria Applied
PM2
This variant is present in gnomAD (MAF= 0.00141%, 4/282712 alleles, homozygotes = 0) and at a higher frequency in the Remaining individuals population (MAF= 0.0138%, 1/7228 alleles, homozygotes = 0). The variant is rare (MAF < 0.1%), supporting PM2 criterion application.
ClinVar 2025-05-15T11:51:14.088831
Classification
Likely Benign
Based on 3 submitter reviews in ClinVar
Submitter Breakdown
3 LB
Pathogenic
Likely Pathogenic
VUS
Likely Benign
Benign
Publications
0 publications
Clinical Statement
This variant has been reported in ClinVar as Likely benign (3 clinical laboratories).
COSMIC
COSMIC ID
Unknown
Recurrence
0 occurrences
PM1 Criteria
Not Applied
Accessing full COSMIC database details requires institutional login or subscription. External links may prompt for authentication.
Functional Domain
Hotspot Status
Not a hotspot
Domain Summary

This variant is not located in a mutational hotspot or critical domain (0 mutations).

Related Variants in This Domain

Functional Studies

Functional Impact
Summary
The variant has not been functionally characterized.

Computational Evidence

Pathogenicity Predictions
Predictor Consensus
Mixed/VUS
PP3 Applied
No
Additional Predictors
Benign:
CADD: 0.33
SpliceAI Scores Window: ±500bp
Effect Type Score Position
- Acceptor Loss
0.0
33 bp
- Donor Loss
0.01
-103 bp
+ Acceptor Gain
0.0
-422 bp
+ Donor Gain
0.01
-174 bp
High impact (≥0.5)
Medium impact (0.2-0.49)
Low impact (<0.2)

VCEP Guidelines

Applied ACMG/AMP Criteria
PVS1
PVS1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PVS1 is: "Null variant in a gene where loss of function (LoF) is a known mechanism of disease (e.g., nonsense, frameshift, canonical ±1 or 2 splice sites, initiation codon, single exon deletion in a LoF gene)". The evidence for this variant shows: it is a synonymous change (G420=) not expected to result in a null effect. Therefore, this criterion is not applied because the variant is not a null variant.
PS1
PS1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PS1 is: "Same amino acid change as a known pathogenic variant but different nucleotide change". The evidence for this variant shows: it is a synonymous variant with no amino acid change. Therefore, this criterion is not applied because there is no amino acid change.
PS2
PS2 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PS2 is: "De novo (both maternity and paternity confirmed) in a patient with the disease and no family history". The evidence for this variant shows: no data on de novo status. Therefore, this criterion is not applied due to lack of de novo evidence.
PS3
PS3 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PS3 is: "Well-established functional studies supportive of a damaging effect on the gene or gene product". The evidence for this variant shows: no functional studies have been performed. Therefore, this criterion is not applied due to absence of functional data.
PS4
PS4 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PS4 is: "Prevalence in affected individuals significantly increased compared with controls". The evidence for this variant shows: no case-control data available. Therefore, this criterion is not applied due to lack of prevalence data.
PM1
PM1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PM1 is: "Located in a mutational hot spot or well-established functional domain without benign variation". The evidence for this variant shows: no known hotspot or functional domain involvement. Therefore, this criterion is not applied.
PM2
PM2 (Moderate)
According to standard ACMG guidelines, the rule for PM2 is: "Absent from controls (or at extremely low frequency if recessive)". The evidence for this variant shows: present in gnomAD at MAF=0.00141%, extremely rare and absent as homozygote. Therefore, this criterion is applied at Moderate strength because the variant is extremely rare in population databases.
PM3
PM3 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PM3 is: "Detected in trans with a pathogenic variant (for recessive disorders)". The evidence for this variant shows: no data on trans configuration with pathogenic variants. Therefore, this criterion is not applied.
PM4
PM4 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PM4 is: "Protein length changes due to in-frame deletions/insertions or stop-loss variants". The evidence for this variant shows: no change in protein length. Therefore, this criterion is not applied.
PM5
PM5 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PM5 is: "Novel missense change at an amino acid residue where a different pathogenic missense change has been seen". The evidence for this variant shows: it is synonymous, not missense. Therefore, this criterion is not applied.
PM6
PM6 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PM6 is: "Assumed de novo, but without confirmation of paternity and maternity". The evidence for this variant shows: no de novo data. Therefore, this criterion is not applied.
PP1
PP1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PP1 is: "Co-segregation with disease in multiple affected family members". The evidence for this variant shows: no segregation data. Therefore, this criterion is not applied.
PP2
PP2 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PP2 is: "Missense variant in a gene with a low rate of benign missense variation and where missense variants are a common mechanism of disease". The evidence for this variant shows: it is synonymous. Therefore, this criterion is not applied.
PP3
PP3 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PP3 is: "Multiple lines of computational evidence support a deleterious effect on the gene/gene product (e.g., conservation, splicing impact)". The evidence for this variant shows: computational evidence predicts no deleterious effect (CADD=0.33, SpliceAI=0.01). Therefore, this criterion is not applied.
PP4
PP4 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PP4 is: "Patient's phenotype or family history highly specific for a disease with a single genetic etiology". The evidence for this variant shows: no phenotype data provided. Therefore, this criterion is not applied.
PP5
PP5 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for PP5 is: "Reputable source reports variant as pathogenic, but without accessible evidence". The evidence for this variant shows: sources report likely benign, not pathogenic. Therefore, this criterion is not applied.
BA1
BA1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BA1 is: "Allele frequency is too high for the disorder (based on population data)". The evidence for this variant shows: frequency is extremely low (<0.1%). Therefore, this criterion is not applied.
BS1
BS1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BS1 is: "Allele frequency is greater than expected for the disorder". The evidence for this variant shows: frequency is very low, not greater than expected. Therefore, this criterion is not applied.
BS2
BS2 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BS2 is: "Observed in healthy individuals with full penetrance expected at an early age". The evidence for this variant shows: no specific data on healthy individuals. Therefore, this criterion is not applied.
BS3
BS3 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BS3 is: "Well-established functional studies show no damaging effect on protein function or splicing". The evidence for this variant shows: no functional studies performed. Therefore, this criterion is not applied.
BS4
BS4 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BS4 is: "Lack of segregation in affected family members". The evidence for this variant shows: no segregation data. Therefore, this criterion is not applied.
BP1
BP1 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BP1 is: "Missense variant in a gene where only LoF causes disease". The evidence for this variant shows: it is synonymous, not missense. Therefore, this criterion is not applied.
BP2
BP2 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BP2 is: "Observed in trans with a pathogenic variant for dominant disorders or in cis with a pathogenic variant". The evidence for this variant shows: no data on cis/trans configuration. Therefore, this criterion is not applied.
BP3
BP3 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BP3 is: "In-frame deletions/insertions in a repetitive region without known function". The evidence for this variant shows: it is a single nucleotide synonymous change. Therefore, this criterion is not applied.
BP4
BP4 (Supporting)
According to standard ACMG guidelines, the rule for BP4 is: "Multiple lines of computational evidence suggest no impact". The evidence for this variant shows: CADD score 0.33 and SpliceAI score 0.01 indicate no functional or splicing impact. Therefore, this criterion is applied at Supporting strength because computational tools predict no effect.
BP5
BP5 (Not Applied) Strength Modified
According to standard ACMG guidelines, the rule for BP5 is: "Variant found in a case with an alternate molecular basis for disease". The evidence for this variant shows: no case reports with alternate molecular findings. Therefore, this criterion is not applied.
BP6
BP6 (Supporting)
According to standard ACMG guidelines, the rule for BP6 is: "Reputable source reports variant as benign, but without accessible evidence". The evidence for this variant shows: ClinVar reports Likely Benign from three clinical laboratories without detailed evidence. Therefore, this criterion is applied at Supporting strength because reputable sources classify it as benign.
BP7
BP7 (Supporting)
According to standard ACMG guidelines, the rule for BP7 is: "Synonymous variant with no predicted impact on splicing". The evidence for this variant shows: it is synonymous and SpliceAI predicts no splicing impact (score 0.01). Therefore, this criterion is applied at Supporting strength because it is a silent change without splicing effect.