NM_000257.4(MYH7):c.4964T>C (p.Ile1655Thr) AND Cardiomyopathy

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Oct 18, 2019
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:: RCV001192289.3

Allele description [Variation Report for NM_000257.4(MYH7):c.4964T>C (p.Ile1655Thr)]

NM_000257.4(MYH7):c.4964T>C (p.Ile1655Thr)

Genes:

LOC126861897:BRD4-independent group 4 enhancer GRCh37_chr14:23884455-23885654 [Gene]
MYH7:myosin heavy chain 7 [Gene - OMIM - HGNC]
MHRT:myosin heavy chain associated RNA transcript [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

14q11.2

Genomic location:

Preferred name:

NM_000257.4(MYH7):c.4964T>C (p.Ile1655Thr)

HGVS:

NC_000014.9:g.23415822A>G
NG_007884.1:g.24840T>C
NM_000257.4:c.4964T>CMANE SELECT
NP_000248.2:p.Ile1655Thr
LRG_384:g.24840T>C
NC_000014.8:g.23885031A>G
NM_000257.3:c.4964T>C
NR_126491.1:n.254A>G

Protein change:

I1655T

Links:

dbSNP: rs1892177990

NCBI 1000 Genomes Browser:

rs1892177990

Molecular consequence:

NM_000257.4:c.4964T>C - missense variant - [Sequence Ontology: SO:0001583]
NR_126491.1:n.254A>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]

Condition(s)

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

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001360318	Color Diagnostics, LLC DBA Color Health	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Oct 18, 2019)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV001360318

Color Diagnostics, LLC DBA Color Health

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Oct 18, 2019)

germline

clinical testing

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

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical 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, SCV001360318.2

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

Description

This missense variant replaces isoleucine with threonine at codon 1655 of the MYH7 protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has not been identified 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.

#	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 26, 2023

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