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NM_001276345.2(TNNT2):c.764C>T (p.Ala255Val) AND Cardiomyopathy

Germline classification:
Uncertain significance (2 submissions)
Last evaluated:
Dec 1, 2023
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:
RCV001183974.5

Allele description [Variation Report for NM_001276345.2(TNNT2):c.764C>T (p.Ala255Val)]

NM_001276345.2(TNNT2):c.764C>T (p.Ala255Val)

Gene:
TNNT2:troponin T2, cardiac type [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
1q32.1
Genomic location:
Preferred name:
NM_001276345.2(TNNT2):c.764C>T (p.Ala255Val)
HGVS:
  • NC_000001.11:g.201361325G>A
  • NG_007556.1:g.21353C>T
  • NM_000364.4:c.755C>T
  • NM_001001430.3:c.734C>T
  • NM_001001431.3:c.725C>T
  • NM_001001432.3:c.716C>T
  • NM_001276345.2:c.764C>TMANE SELECT
  • NM_001276346.2:c.635C>T
  • NM_001276347.2:c.734C>T
  • NP_000355.2:p.Ala252Val
  • NP_001001430.1:p.Ala245Val
  • NP_001001431.1:p.Ala242Val
  • NP_001001432.1:p.Ala239Val
  • NP_001263274.1:p.Ala255Val
  • NP_001263275.1:p.Ala212Val
  • NP_001263276.1:p.Ala245Val
  • LRG_431t1:c.764C>T
  • LRG_431:g.21353C>T
  • LRG_431p1:p.Ala255Val
  • NC_000001.10:g.201330453G>A
  • NM_001001430.1:c.734C>T
  • NM_001001430.2:c.734C>T
Protein change:
A212V
Links:
dbSNP: rs369181536
NCBI 1000 Genomes Browser:
rs369181536
Molecular consequence:
  • NM_000364.4:c.755C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001001430.3:c.734C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001001431.3:c.725C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001001432.3:c.716C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001276345.2:c.764C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001276346.2:c.635C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001276347.2:c.734C>T - missense variant - [Sequence Ontology: SO:0001583]
Observations:
1

Condition(s)

Name:
Cardiomyopathy (CMYO)
Synonyms:
Cardiomyopathies
Identifiers:
MONDO: MONDO:0004994; MedGen: C0878544; Human Phenotype Ontology: HP:0001638

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV001349833Color Diagnostics, LLC DBA Color Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain significance
(Mar 6, 2020) 		germlineclinical testing

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

SCV004821973All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain Significance
(Dec 1, 2023) 		germlineclinical testing

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

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknown1not providednot provided108544not providedclinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Details of each submission

From Color Diagnostics, LLC DBA Color Health, SCV001349833.2

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

Description

This missense variant replaces alanine with valine at codon 245 of the TNNT2 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been reported for this variant. This variant has been reported in an individual affected with dilated cardiomyopathy (PMID: 24503780). This variant has also been reported in an individual from a cohort of participants that were not pre-selected for a personal or family history of cardiovascular disorders (PMID: 22958901). This variant has been identified in 1/251480 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance.

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

From All of Us Research Program, National Institutes of Health, SCV004821973.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided1not providednot providedclinical testing PubMed (1)
#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown108544not providednot provided1not providednot providednot provided

Last Updated: May 7, 2024