Genetic Variant WRN:p.Ser426Pro (chr8-31083705-T-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 4P and 1B. PM1PM2BP4

The NM_000553.6(WRN):c.1276T>C(p.Ser426Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S426F) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Consequence

WRN
NM_000553.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.34

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:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM1

In a modified_residue Phosphoserine (size 0) in uniprot entity WRN_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.26415873).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000553.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	WRN	NM_000553.6	MANE Select	c.1276T>C	p.Ser426Pro	missense	Exon 10 of 35	NP_000544.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
WRN	ENST00000298139.7	TSL:1 MANE Select	c.1276T>C	p.Ser426Pro	missense	Exon 10 of 35	ENSP00000298139.5
WRN	ENST00000966176.1		c.1276T>C	p.Ser426Pro	missense	Exon 10 of 35	ENSP00000636235.1
WRN	ENST00000860283.1		c.1276T>C	p.Ser426Pro	missense	Exon 10 of 35	ENSP00000530342.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Werner syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.098

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.097

Eigen

Benign

-0.14

Eigen_PC

Benign

-0.25

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.50

M_CAP

Benign

0.015

MetaRNN

Benign

0.26

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.8

PhyloP100

2.3

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.3

REVEL

Benign

0.11

Sift

Benign

0.045

Sift4G

Uncertain

0.048

Polyphen

0.94

Vest4

0.22

MutPred

0.32

Gain of catalytic residue at S426 (P = 0.0028)

MVP

0.60

MPC

0.088

ClinPred

0.32

GERP RS

1.4

Varity_R

0.13

gMVP

0.048

Mutation Taster

=95/5

polymorphism

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over