rs17847568

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1

The NM_000553.6(WRN):c.2342C>T(p.Thr781Ile) variant causes a missense change. The variant allele was found at a frequency of 0.000412 in 1,614,012 control chromosomes in the GnomAD database, including 7 homozygotes. In-silico tool predicts 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. T781A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00014 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00044 ( 6 hom. )

Consequence

WRN
NM_000553.6 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 4.64

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.024549395).

BP6

Variant 8-31116422-C-T is Benign according to our data. Variant chr8-31116422-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 238139.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=2, Likely_benign=1}.

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000138 (21/152286) while in subpopulation EAS AF= 0.00367 (19/5180). AF 95% confidence interval is 0.0024. There are 1 homozygotes in gnomad4. There are 14 alleles in male gnomad4 subpopulation. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
WRN	NM_000553.6 linkuse as main transcript	c.2342C>T	p.Thr781Ile	missense_variant	20/35	ENST00000298139.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
WRN	ENST00000298139.7 linkuse as main transcript	c.2342C>T	p.Thr781Ile	missense_variant	20/35	1	NM_000553.6	P1
WRN	ENST00000521620.5 linkuse as main transcript	n.975C>T		non_coding_transcript_exon_variant	8/23	1
WRN	ENST00000650667.1 linkuse as main transcript	c.*1956C>T		3_prime_UTR_variant, NMD_transcript_variant	19/34

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152168

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00366

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000219

AC:

AN:

251280

Hom.:

AF XY:

0.000214

AC XY:

AN XY:

135806

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00288

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.000441

AC:

644

AN:

1461726

Hom.:

Cov.:

AF XY:

0.000426

AC XY:

310

AN XY:

727158

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0161

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000138

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00367

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000907

ExAC

AF:

0.000222

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3476

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

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. However, the evidence from the literature, in combination with allele frequency data from public databases where available, was not sufficient to rule this variant in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 29, 2024	- -

Ovarian cancer

Benign:1

Benign, criteria provided, single submitter

clinical testing

Laboratory of Molecular Epidemiology of Birth Defects, West China Second University Hospital, Sichuan University

Jan 01, 2022

- -

WRN-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 21, 2023

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

0.34

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.27

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.59

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.87

LIST_S2

Benign

0.85

M_CAP

Benign

0.014

MetaRNN

Benign

0.025

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.4

MutationTaster

Benign

0.91

PrimateAI

Benign

0.40

PROVEAN

Uncertain

-2.9

REVEL

Benign

0.15

Sift

Benign

0.076

Sift4G

Uncertain

0.044

Polyphen

0.81

Vest4

0.61

MVP

0.70

MPC

0.18

ClinPred

0.085

GERP RS

5.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.31

gMVP

0.54

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

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