NM_000553.6:c.1378G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_000553.6(WRN):c.1378G>A(p.Asp460Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00013 in 1,612,638 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D460G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 1 hom. )

Consequence

WRN
NM_000553.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 3.22

Publications

1 publications found

Variant links:

Genes affected

WRN (HGNC:12791): (WRN RecQ like helicase) This gene encodes a member of the RecQ subfamily of DNA helicase proteins. The encoded nuclear protein is important in the maintenance of genome stability and plays a role in DNA repair, replication, transcription and telomere maintenance. This protein contains a N-terminal 3' to 5' exonuclease domain, an ATP-dependent helicase domain and RQC (RecQ helicase conserved region) domain in its central region, and a C-terminal HRDC (helicase RNase D C-terminal) domain and nuclear localization signal. Defects in this gene are the cause of Werner syndrome, an autosomal recessive disorder characterized by accelerated aging and an elevated risk for certain cancers. [provided by RefSeq, Aug 2017]

WRN Gene-Disease associations (from GenCC):

Werner syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet, G2P, Ambry Genetics
osteosarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp

WRN links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0053675175).

BP6

Variant 8-31085193-G-A is Benign according to our data. Variant chr8-31085193-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 458382.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.000137 (200/1460774) while in subpopulation SAS AF = 0.00206 (178/86222). AF 95% confidence interval is 0.00182. There are 1 homozygotes in GnomAdExome4. There are 143 alleles in the male GnomAdExome4 subpopulation. Median coverage is 30. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WRN	NM_000553.6 link	c.1378G>A	p.Asp460Asn	missense_variant	Exon 11 of 35	ENST00000298139.7	NP_000544.2	Q14191

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
WRN	ENST00000298139.7 link	c.1378G>A	p.Asp460Asn	missense_variant	Exon 11 of 35	1	NM_000553.6	ENSP00000298139.5	Q14191
WRN	ENST00000651642.1 link	c.592G>A	p.Asp198Asn	missense_variant	Exon 4 of 4			ENSP00000498779.1	A0A494C0Y6
WRN	ENST00000650667.1 link	n.*992G>A		non_coding_transcript_exon_variant	Exon 10 of 34			ENSP00000498593.1	A0A494C0M3
WRN	ENST00000650667.1 link	n.*992G>A		3_prime_UTR_variant	Exon 10 of 34			ENSP00000498593.1	A0A494C0M3

Frequencies

GnomAD3 genomes

AF:

0.0000659

AC:

AN:

151750

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000657

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00146

Gnomad FIN

AF:

0.0000955

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000378

AC:

AN:

251020

AF XY:

0.000449

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000137

AC:

200

AN:

1460774

Hom.:

Cov.:

AF XY:

0.000197

AC XY:

143

AN XY:

726778

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33448

American (AMR)

AF:

0.0000447

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26080

East Asian (EAS)

AF:

0.0000506

AC:

AN:

39490

South Asian (SAS)

AF:

0.00206

AC:

178

AN:

86222

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53384

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1111342

Other (OTH)

AF:

0.000166

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.438

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.0000658

AC:

AN:

151864

Hom.:

Cov.:

AF XY:

0.0000943

AC XY:

AN XY:

74222

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41466

American (AMR)

AF:

0.0000656

AC:

AN:

15250

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00146

AC:

AN:

4802

European-Finnish (FIN)

AF:

0.0000955

AC:

AN:

10474

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67932

Other (OTH)

AF:

0.00

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.000420

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Werner syndrome

Uncertain:1Benign:1

Jan 21, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 28, 2020

Revvity Omics, Revvity

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Wiskott-Aldrich syndrome

Benign:1

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

WRN-related disorder

Benign:1

May 06, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.082

BayesDel_addAF

Benign

-0.65

BayesDel_noAF

Benign

-0.71

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.099

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.44

FATHMM_MKL

Benign

0.43

LIST_S2

Benign

0.77

M_CAP

Benign

0.0019

MetaRNN

Benign

0.0054

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.69

PhyloP100

3.2

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.1

REVEL

Benign

0.13

Sift

Benign

0.31

Sift4G

Benign

0.43

Polyphen

0.91

Vest4

0.24

MutPred

0.22

Loss of phosphorylation at S462 (P = 0.1177);

MVP

0.51

MPC

0.078

ClinPred

0.041

GERP RS

3.2

Varity_R

0.032

gMVP

0.29

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over