U.S. flag

An official website of the United States government

NM_021830.5(TWNK):c.1357C>T (p.Arg453Trp) AND not provided

Germline classification:
Uncertain significance (2 submissions)
Last evaluated:
Jan 14, 2022
Review status:
2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000487273.5

Allele description [Variation Report for NM_021830.5(TWNK):c.1357C>T (p.Arg453Trp)]

NM_021830.5(TWNK):c.1357C>T (p.Arg453Trp)

Gene:
TWNK:twinkle mtDNA helicase [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
10q24.31
Genomic location:
Preferred name:
NM_021830.5(TWNK):c.1357C>T (p.Arg453Trp)
HGVS:
  • NC_000010.11:g.100989757C>T
  • NG_011646.1:g.2759G>A
  • NG_012624.1:g.7222C>T
  • NM_001163812.2:c.1357C>T
  • NM_001163813.2:c.-6C>T
  • NM_001163814.2:c.-6C>T
  • NM_001368275.1:c.-6C>T
  • NM_021830.5:c.1357C>TMANE SELECT
  • NP_001157284.1:p.Arg453Trp
  • NP_068602.2:p.Arg453Trp
  • NC_000010.10:g.102749514C>T
  • NM_021830.4:c.1357C>T
  • NR_160738.1:n.2025C>T
  • NR_160739.1:n.185C>T
  • NR_160740.1:n.1963C>T
  • NR_160741.1:n.1963C>T
  • NR_160742.1:n.1963C>T
Protein change:
R453W
Links:
dbSNP: rs572114433
NCBI 1000 Genomes Browser:
rs572114433
Molecular consequence:
  • NM_001163813.2:c.-6C>T - 5 prime UTR variant - [Sequence Ontology: SO:0001623]
  • NM_001163814.2:c.-6C>T - 5 prime UTR variant - [Sequence Ontology: SO:0001623]
  • NM_001368275.1:c.-6C>T - 5 prime UTR variant - [Sequence Ontology: SO:0001623]
  • NM_001163812.2:c.1357C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_021830.5:c.1357C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NR_160738.1:n.2025C>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160739.1:n.185C>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160740.1:n.1963C>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160741.1:n.1963C>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160742.1:n.1963C>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Synonyms:
none provided
Identifiers:
MedGen: C3661900

Recent activity

Clear Turn Off Turn On

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...

Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV000565784GeneDx
criteria provided, single submitter

(GeneDx Variant Classification Process June 2021)		Uncertain significance
(Sep 23, 2019) 		germlineclinical testing

Citation Link,

SCV003027264Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Uncertain significance
(Jan 14, 2022) 		germlineclinical testing

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

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineyesnot providednot providednot providednot providednot providedclinical testing
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. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From GeneDx, SCV000565784.5

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided

Description

In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge

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

From Labcorp Genetics (formerly Invitae), Labcorp, SCV003027264.1

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

Description

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 453 of the TWNK protein (p.Arg453Trp). This variant is present in population databases (rs572114433, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with TWNK-related conditions. ClinVar contains an entry for this variant (Variation ID: 418602). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt TWNK protein function. 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: Sep 29, 2024