U.S. flag

An official website of the United States government

NM_173500.4(TTBK2):c.1173C>G (p.Asn391Lys) AND not provided

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Oct 30, 2023
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:
RCV003769163.2

Allele description [Variation Report for NM_173500.4(TTBK2):c.1173C>G (p.Asn391Lys)]

NM_173500.4(TTBK2):c.1173C>G (p.Asn391Lys)

Gene:
TTBK2:tau tubulin kinase 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
15q15.2
Genomic location:
Preferred name:
NM_173500.4(TTBK2):c.1173C>G (p.Asn391Lys)
HGVS:
  • NC_000015.10:g.42783443G>C
  • NG_012664.1:g.142367C>G
  • NM_173500.4:c.1173C>GMANE SELECT
  • NP_775771.3:p.Asn391Lys
  • NC_000015.9:g.43075641G>C
  • NC_000015.9:g.43075641G>C
  • NM_173500.3:c.1173C>G
Protein change:
N391K
Links:
dbSNP: rs759246710
NCBI 1000 Genomes Browser:
rs759246710
Molecular consequence:
  • NM_173500.4:c.1173C>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:
none provided
Identifiers:
MedGen: C3661900

Recent activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...

Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV004620320Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))
Uncertain significance
(Oct 30, 2023)
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. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]
PMID:
28492532
PMCID:
PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV004620320.1

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

Description

This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 391 of the TTBK2 protein (p.Asn391Lys). This variant is present in population databases (rs759246710, gnomAD 0.02%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with TTBK2-related conditions. ClinVar contains an entry for this variant (Variation ID: 886334). 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 not expected to disrupt TTBK2 protein function with a negative predictive value of 80%. 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