NM_000553.6(WRN):c.667A>G (p.Ile223Val) AND Werner syndrome

Clinical significance:Uncertain significance (Last evaluated: Aug 17, 2018)

Review status:1 star out of maximum of 4 stars

criteria provided, single submitter

Based on:
1 submission [Details]
Record status:
current
Accession:
RCV000802981.1

Allele description [Variation Report for NM_000553.6(WRN):c.667A>G (p.Ile223Val)]

NM_000553.6(WRN):c.667A>G (p.Ile223Val)

Gene:
WRN:WRN RecQ like helicase [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
8p12
Genomic location:
Preferred name:
NM_000553.6(WRN):c.667A>G (p.Ile223Val)
HGVS:
  • NC_000008.11:g.31068270A>G
  • NG_008870.1:g.40009A>G
  • NM_000553.6:c.667A>GMANE SELECT
  • NP_000544.2:p.Ile223Val
  • LRG_524t1:c.667A>G
  • LRG_524:g.40009A>G
  • NC_000008.10:g.30925786A>G
  • NM_000553.4:c.667A>G
Protein change:
I223V
Links:
dbSNP: rs587778754
NCBI 1000 Genomes Browser:
rs587778754
Molecular consequence:
  • NM_000553.6:c.667A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Werner syndrome (WRN)
Synonyms:
Werner's syndrome
Identifiers:
MONDO: MONDO:0010196; MedGen: C0043119; Orphanet: 902; OMIM: 277700

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV000942833Invitaecriteria provided, single submitter
Uncertain significance
(Aug 17, 2018)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240-242.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Invitae, SCV000942833.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

This sequence change replaces isoleucine with valine at codon 223 of the WRN protein (p.Ile223Val). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and valine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with WRN-related disease. ClinVar contains an entry for this variant (Variation ID: 135447). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Oct 7, 2021

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