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NM_021830.5(TWNK):c.1826G>T (p.Arg609Leu) AND Sensory ataxic neuropathy, dysarthria, and ophthalmoparesis

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Apr 27, 2017
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
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:
RCV001103036.4

Allele description [Variation Report for NM_021830.5(TWNK):c.1826G>T (p.Arg609Leu)]

NM_021830.5(TWNK):c.1826G>T (p.Arg609Leu)

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.1826G>T (p.Arg609Leu)
HGVS:
  • NC_000010.11:g.100993281G>T
  • NG_012624.1:g.10746G>T
  • NM_001163812.2:c.*121G>T
  • NM_001163813.2:c.464G>T
  • NM_001163814.2:c.*121G>T
  • NM_001368275.1:c.464G>T
  • NM_021830.5:c.1826G>TMANE SELECT
  • NP_001157285.1:p.Arg155Leu
  • NP_001355204.1:p.Arg155Leu
  • NP_068602.2:p.Arg609Leu
  • NC_000010.10:g.102753038G>T
  • NM_021830.4:c.1826G>T
  • NR_160738.1:n.2614G>T
  • NR_160739.1:n.818G>T
  • NR_160740.1:n.2476G>T
  • NR_160741.1:n.2432G>T
  • NR_160742.1:n.2596G>T
Protein change:
R155L
Links:
dbSNP: rs1274226715
NCBI 1000 Genomes Browser:
rs1274226715
Molecular consequence:
  • NM_001163812.2:c.*121G>T - 3 prime UTR variant - [Sequence Ontology: SO:0001624]
  • NM_001163814.2:c.*121G>T - 3 prime UTR variant - [Sequence Ontology: SO:0001624]
  • NM_001163813.2:c.464G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001368275.1:c.464G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_021830.5:c.1826G>T - missense variant - [Sequence Ontology: SO:0001583]
  • NR_160738.1:n.2614G>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160739.1:n.818G>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160740.1:n.2476G>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160741.1:n.2432G>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_160742.1:n.2596G>T - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

Name:
Sensory ataxic neuropathy, dysarthria, and ophthalmoparesis (SANDO)
Synonyms:
SENSORY ATAXIC NEUROPATHY WITH MITOCHONDRIAL DNA DELETIONS, AUTOSOMAL RECESSIVE; Sensory ataxic neuropathy-dysarthria-ophthalmoparesis syndrome; Epilepsy, progressive myoclonic, type 5
Identifiers:
MONDO: MONDO:0011835; MedGen: C1843851; OMIM: 607459

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Assertion and evidence details

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Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV001259749Illumina Laboratory Services, Illumina
criteria provided, single submitter

(ICSL Variant Classification Criteria 13 December 2019)		Uncertain significance
(Apr 27, 2017) 		germlineclinical testing

Citation Link

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Summary from all submissions

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

Details of each submission

From Illumina Laboratory Services, Illumina, SCV001259749.1

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

Description

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). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance.

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

Last Updated: Dec 24, 2023