Variant 4-2128216-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_181808.4(POLN):c.1879A>G(p.Ile627Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000318 in 1,604,874 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

POLN
NM_181808.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.42

Variant links:

Genes affected

POLN (HGNC:18870): (DNA polymerase nu) This gene encodes a DNA polymerase type-A family member. The encoded protein plays a role in DNA repair and homologous recombination. This gene shares its 5' exons with some transcripts from overlapping GeneID: 79441, which encodes an augmentin-like protein complex subunit. [provided by RefSeq, Dec 2014]

POLN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.33346376).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POLN	NM_181808.4 linkuse as main transcript	c.1879A>G	p.Ile627Val	missense_variant	19/26	ENST00000511885.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POLN	ENST00000511885.6 linkuse as main transcript	c.1879A>G	p.Ile627Val	missense_variant	19/26	5	NM_181808.4	P1	Q7Z5Q5-1
POLN	ENST00000382865.5 linkuse as main transcript	c.1879A>G	p.Ile627Val	missense_variant	17/24	1		P1	Q7Z5Q5-1
POLN	ENST00000511098.1 linkuse as main transcript	c.778A>G	p.Ile260Val	missense_variant	12/19	1
POLN	ENST00000514858.5 linkuse as main transcript	n.886A>G		non_coding_transcript_exon_variant	10/14	2

Frequencies

GnomAD3 genomes

AF:

0.000197

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000579

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:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000320

AC:

AN:

250014

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

135068

show subpopulations

Gnomad AFR exome

AF:

0.000309

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000177

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000145

AC:

AN:

1452522

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

723142

show subpopulations

Gnomad4 AFR exome

AF:

0.000241

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000815

Gnomad4 OTH exome

AF:

0.0000499

GnomAD4 genome

AF:

0.000197

AC:

AN:

152352

Hom.:

Cov.:

AF XY:

0.000215

AC XY:

AN XY:

74510

show subpopulations

Gnomad4 AFR

AF:

0.000577

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.0000270

Hom.:

Bravo

AF:

0.000136

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 29, 2021

The c.1879A>G (p.I627V) alteration is located in exon 17 (coding exon 17) of the POLN gene. This alteration results from a A to G substitution at nucleotide position 1879, causing the isoleucine (I) at amino acid position 627 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.42

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.36

T;T

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.82

T;.

M_CAP

Benign

0.0094

MetaRNN

Benign

0.33

T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

1.4

L;L

MutationTaster

Benign

0.56

N;N

PrimateAI

Uncertain

0.57

PROVEAN

Benign

-0.60

N;N

REVEL

Benign

0.097

Sift

Benign

0.11

T;T

Sift4G

Benign

0.30

T;T

Polyphen

0.97

D;D

Vest4

0.36

MVP

0.36

MPC

0.15

ClinPred

0.053

GERP RS

4.0

Varity_R

0.23

gMVP

0.21

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over