rs781741859

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000553.6(WRN):​c.715A>C​(p.Ile239Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,453,354 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I239V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

WRN
NM_000553.6 missense

Scores

19

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.108

Publications

0 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.055822074).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
WRNNM_000553.6 linkc.715A>C p.Ile239Leu missense_variant Exon 7 of 35 ENST00000298139.7 NP_000544.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
WRNENST00000298139.7 linkc.715A>C p.Ile239Leu missense_variant Exon 7 of 35 1 NM_000553.6 ENSP00000298139.5
WRNENST00000651642.1 linkc.10A>C p.Ile4Leu missense_variant Exon 1 of 4 ENSP00000498779.1
WRNENST00000650667.1 linkn.*329A>C non_coding_transcript_exon_variant Exon 6 of 34 ENSP00000498593.1
WRNENST00000650667.1 linkn.*329A>C 3_prime_UTR_variant Exon 6 of 34 ENSP00000498593.1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000809
AC:
2
AN:
247106
AF XY:
0.0000150
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:
0.0000180
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000138
AC:
2
AN:
1453354
Hom.:
0
Cov.:
29
AF XY:
0.00000277
AC XY:
2
AN XY:
723146
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33314
American (AMR)
AF:
0.00
AC:
0
AN:
44504
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25942
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39564
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85834
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53240
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5728
European-Non Finnish (NFE)
AF:
0.00000181
AC:
2
AN:
1105246
Other (OTH)
AF:
0.00
AC:
0
AN:
59982
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.077
BayesDel_addAF
Benign
-0.34
T
BayesDel_noAF
Benign
-0.71
CADD
Benign
0.71
DANN
Benign
0.35
DEOGEN2
Benign
0.051
T
Eigen
Benign
-1.4
Eigen_PC
Benign
-1.4
FATHMM_MKL
Benign
0.032
N
LIST_S2
Benign
0.48
T
M_CAP
Benign
0.0035
T
MetaRNN
Benign
0.056
T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
1.0
L
PhyloP100
0.11
PrimateAI
Benign
0.34
T
PROVEAN
Benign
-0.21
N
REVEL
Benign
0.0060
Sift
Benign
1.0
T
Sift4G
Benign
0.82
T
Polyphen
0.0
B
Vest4
0.16
MutPred
0.29
Loss of methylation at K241 (P = 0.0588);
MVP
0.24
MPC
0.064
ClinPred
0.021
T
GERP RS
-1.8
PromoterAI
-0.0020
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.044
gMVP
0.20
Mutation Taster
=96/4
polymorphism

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

Other links and lift over

dbSNP: rs781741859; hg19: chr8-30925834; API