NM_000363.5(TNNI3):c.273G>A (p.Ala91=) AND not specified

Germline classification:: Benign (4 submissions)
Last evaluated:: Sep 5, 2017
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:: RCV000036281.15

Allele description [Variation Report for NM_000363.5(TNNI3):c.273G>A (p.Ala91=)]

NM_000363.5(TNNI3):c.273G>A (p.Ala91=)

Gene:

TNNI3:troponin I3, cardiac type [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19q13.42

Genomic location:

Preferred name:

NM_000363.5(TNNI3):c.273G>A (p.Ala91=)

HGVS:

NC_000019.10:g.55156210C>T
NG_007866.2:g.6523G>A
NM_000363.5:c.273G>AMANE SELECT
NP_000354.4:p.Ala91=
LRG_432t1:c.273G>A
LRG_432:g.6523G>A
NC_000019.9:g.55667578C>T
NM_000363.4:c.273G>A
c.273G>A
p.Ala91Ala

Links:

dbSNP: rs75491697

NCBI 1000 Genomes Browser:

rs75491697

Molecular consequence:

NM_000363.5:c.273G>A - synonymous variant - [Sequence Ontology: SO:0001819]

Observations:

Condition(s)

Synonyms:: AllHighlyPenetrant
Identifiers:: MedGen: CN169374

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000059933	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	criteria provided, single submitter (LMM Criteria)	Benign (Apr 4, 2012)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000230915	Eurofins Ntd Llc (ga)	criteria provided, single submitter (EGL Classification Definitions 2015)	Benign (Apr 9, 2015)	germline	clinical testing	Citation Link,
SCV000920309	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015)	Benign (Sep 5, 2017)	germline	clinical testing	Citation Link,
SCV001922156	Clinical Genetics, Academic Medical Center - VKGL Data-share Consensus See additional submitters Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen	no assertion criteria provided	Benign	germline	clinical testing

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	1	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	not provided	6	6	not provided	not provided	not provided	clinical testing

Citations

PubMed

A systematic approach to assessing the clinical significance of genetic variants.

Duzkale H, Shen J, McLaughlin H, Alfares A, Kelly MA, Pugh TJ, Funke BH, Rehm HL, Lebo MS.

Clin Genet. 2013 Nov;84(5):453-63. doi: 10.1111/cge.12257.

PubMed [citation]

PMID:: 24033266
PMCID:: PMC3995020

Details of each submission

From Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine, SCV000059933.6

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	6	not provided	not provided	clinical testing	PubMed (1)

Description

Ala91Ala in Exon 05 of TNNI3: This variant is not expected to have clinical sign ificance because it does not alter an amino acid residue, is not located within the splice consensus sequence and has been identified in 0.5% (14/2998) of Afric an American chromosomes from a broad population by the NHLBI Exome Sequencing Pr oject (http://evs.gs.washington.edu/EVS; dbSNP rs75491697).

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	not provided	not provided	not provided	not provided		6	not provided	6	not provided

From Eurofins Ntd Llc (ga), SCV000230915.5

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	1	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		1	not provided	not provided	not provided

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV000920309.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

Description

Variant summary: The TNNI3 c.273G>A (p.Ala91Ala) variant involves the alteration of a non-conserved nucleotide, resulting in a synonymous change. MutationTaster predicts a damaging outcome for this variant. 3/5 splice prediction tools predict no significant impact on normal splicing. ESE finder predicts that this variant may affect ESE sites at the locus. However, these predictions have yet to be confirmed by functional studies. This variant was found in 48/113142 control chromosomes from all ethnicities, but was predominantly observed in the African subpopulation at a frequency of 0.005606 (46/8206). This frequency is about 45 times the estimated maximal expected allele frequency of a pathogenic TNNI3 variant (0.000125), strongly suggesting this is likely a benign polymorphism found primarily in the populations of African origin. In addition, the variant was found to co-occur with a pathogenic DSP mutation (c.1dupA) in an internal LCA sample. Additionally, multiple clinical diagnostic laboratories/reputable databases have classified this variant as benign. The variant of interest has not, to our knowledge, been reported in affected individuals via publications nor evaluated for functional impact by in vivo/vitro studies. Taken together, this variant is classified as benign.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Clinical Genetics, Academic Medical Center - VKGL Data-share Consensus, SCV001922156.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	not provided

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Apr 20, 2024

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