rs878854131

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_000553.6(WRN):c.1165delA(p.Arg389GlufsTer4) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000502 in 1,613,904 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000053 ( 0 hom. )

Consequence

WRN
NM_000553.6 frameshift

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:9

Conservation

PhyloP100: 2.24

Publications

4 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: Pathogenic. The variant received 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 8-31081189-GA-G is Pathogenic according to our data. Variant chr8-31081189-GA-G is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 238117.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
WRN	NM_000553.6 link	c.1165delA	p.Arg389GlufsTer4	frameshift_variant	Exon 9 of 35	ENST00000298139.7	NP_000544.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
WRN	ENST00000298139.7 link	c.1165delA	p.Arg389GlufsTer4	frameshift_variant	Exon 9 of 35	1	NM_000553.6	ENSP00000298139.5
WRN	ENST00000651642.1 link	c.460delA	p.Arg154GlufsTer4	frameshift_variant	Exon 3 of 4			ENSP00000498779.1
WRN	ENST00000650667.1 link	n.*779delA		non_coding_transcript_exon_variant	Exon 8 of 34			ENSP00000498593.1
WRN	ENST00000650667.1 link	n.*779delA		3_prime_UTR_variant	Exon 8 of 34			ENSP00000498593.1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000479

AC:

AN:

250484

AF XY:

0.0000739

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:

0.00

Gnomad NFE exome

AF:

0.0000531

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000534

AC:

AN:

1461714

Hom.:

Cov.:

AF XY:

0.0000536

AC XY:

AN XY:

727156

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39652

South Asian (SAS)

AF:

0.000186

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000549

AC:

AN:

1111940

Other (OTH)

AF:

0.00

AC:

AN:

60384

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

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:

0.0000197

AC:

AN:

152190

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74358

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41462

American (AMR)

AF:

0.00

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5204

South Asian (SAS)

AF:

0.000207

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

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:

0.0000829

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Werner syndrome

Pathogenic:7

Mar 30, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Aug 12, 2015

Molecular Genetics Laboratory, BC Children's and BC Women's Hospitals

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

Apr 23, 2018

Illumina Laboratory Services, Illumina

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The WRN c.1165delA (p.Arg389GlufsTer4) variant results in a frameshift and is predicted to result in premature termination of the protein. The p.Arg389GlufsTer4 variant has been reported in at least one study in which it is identified in three unrelated individuals diagnosed with Werner syndrome, including two who carry the variant in a homozygous state and one who carries the variant in a compound heterozygous state (Uhrhammer et al. 2006). Control data are unavailable for this variant, which is reported at a frequency of 0.000195 in the South Asian population of the Genome Aggregation Database. Based on the clinical evidence and potential impact of frameshift variants, the p.Arg389GlufsTer4 variant is classified as likely pathogenic for Werner syndrome. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population.

Sep 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Arg389Glufs*4) in the WRN gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in WRN are known to be pathogenic (PMID: 16673358). This variant is present in population databases (rs558267186, gnomAD 0.02%). This premature translational stop signal has been observed in individual(s) with Werner syndrome (PMID: 16786514). ClinVar contains an entry for this variant (Variation ID: 238117). For these reasons, this variant has been classified as Pathogenic.

Sep 28, 2024

3billion

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The variant is observed at an extremely low frequency in the gnomAD v4.1.0 dataset (total allele frequency: 0.005%). Predicted Consequence/Location: Frameshift: predicted to result in a loss or disruption of normal protein function through nonsense-mediated decay (NMD) or protein truncation. Multiple pathogenic variants are reported downstream of the variant. The variant has been reported at least twice as pathogenic with clinical assertions and evidence for the classification (ClinVar ID: VCV000238117 /PMID: 8968742). Therefore, this variant is classified as Pathogenic according to the recommendation of ACMG/AMP guideline.

Nov 01, 1997

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Jun 17, 2022

Revvity Omics, Revvity

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Pathogenic:2

Dec 08, 2022

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Observed with a second disease-causing variant in the WRN gene in patients with Werner syndrome in published literature (Oshima et al., 1996; Uhrhammer et al., 2006; Huang et al., 2006); This variant is associated with the following publications: (PMID: 9450180, 8968742, 34164337, 29641532, 9012406, 16786514, 16673358)

Nov 01, 2016

CeGaT Center for Human Genetics Tuebingen

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

2.2

Mutation Taster

=0/200

disease causing (ClinVar)

(source)

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

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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