NM_001267550.2(TTN):c.63876C>T (p.Asn21292=) AND not specified

Germline classification:: Benign/Likely benign (6 submissions)
Last evaluated:: Aug 19, 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:: RCV000040469.24

Allele description [Variation Report for NM_001267550.2(TTN):c.63876C>T (p.Asn21292=)]

NM_001267550.2(TTN):c.63876C>T (p.Asn21292=)

Genes:

TTN-AS1:TTN antisense RNA 1 [Gene - HGNC]
TTN:titin [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

2q31.2

Genomic location:

Preferred name:

NM_001267550.2(TTN):c.63876C>T (p.Asn21292=)

Other names:

p.N19651N:AAC>AAT

HGVS:

NC_000002.12:g.178587335G>A
NG_011618.3:g.248468C>T
NG_051363.1:g.69509G>A
NM_001256850.1:c.58953C>T
NM_001267550.2:c.63876C>TMANE SELECT
NM_003319.4:c.36681C>T
NM_133378.4:c.56172C>T
NM_133432.3:c.37056C>T
NM_133437.4:c.37257C>T
NP_001243779.1:p.Asn19651=
NP_001254479.1:p.Asn21292=
NP_001254479.2:p.Asn21292=
NP_003310.4:p.Asn12227=
NP_596869.4:p.Asn18724=
NP_597676.3:p.Asn12352=
NP_597681.4:p.Asn12419=
LRG_391t1:c.63876C>T
LRG_391:g.248468C>T
LRG_391p1:p.Asn21292=
NC_000002.11:g.179452062G>A
NM_001267550.1:c.63876C>T
NM_003319.4:c.36681C>T
NM_133379.3:c.*158250C>T
c.56172C>T
p.Asn18724Asn

Links:

dbSNP: rs199598302

NCBI 1000 Genomes Browser:

rs199598302

Molecular consequence:

NM_001256850.1:c.58953C>T - synonymous variant - [Sequence Ontology: SO:0001819]
NM_001267550.2:c.63876C>T - synonymous variant - [Sequence Ontology: SO:0001819]
NM_003319.4:c.36681C>T - synonymous variant - [Sequence Ontology: SO:0001819]
NM_133378.4:c.56172C>T - synonymous variant - [Sequence Ontology: SO:0001819]
NM_133432.3:c.37056C>T - synonymous variant - [Sequence Ontology: SO:0001819]
NM_133437.4:c.37257C>T - 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
SCV000064160	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	criteria provided, single submitter (LMM Criteria)	Benign (Nov 20, 2014)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV000236672	GeneDx	criteria provided, single submitter (GeneDx Variant Classification (06012015))	Benign (Sep 30, 2014)	germline	clinical testing	Citation Link,
SCV000249275	Genetic Services Laboratory, University of Chicago	criteria provided, single submitter (ACMG Guidelines, 2015)	Likely benign (Apr 4, 2015)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001475800	Athena Diagnostics	criteria provided, single submitter (Athena Diagnostics Criteria)	Benign (Sep 25, 2019)	unknown	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001918403	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
SCV004038595	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015)	Benign (Aug 19, 2023)	germline	clinical testing	Citation Link

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	germline	not provided	9	9	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

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

See all PubMed Citations (3)

Details of each submission

From Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine, SCV000064160.6

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	9	not provided	not provided	clinical testing	PubMed (1)

Description

p.Asn18724Asn in exon 256 of TTN: This variant is not expected to have clinical significance because it has been identified in 2.9% (469/16064) of South Asian c hromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute .org).

#	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		9	not provided	9	not provided

From GeneDx, SCV000236672.10

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

Description

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

#	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

From Genetic Services Laboratory, University of Chicago, SCV000249275.1

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

#	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 Athena Diagnostics, SCV001475800.1

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

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	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, SCV001918403.1

#	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

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV004038595.1

#	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	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Mar 16, 2025

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