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NM_000257.4(MYH7):c.4953+1G>T AND Cardiomyopathy

Germline classification:
Uncertain significance (1 submission)
Last evaluated:
Sep 17, 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:
RCV004010103.2

Allele description [Variation Report for NM_000257.4(MYH7):c.4953+1G>T]

NM_000257.4(MYH7):c.4953+1G>T

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.4953+1G>T
HGVS:
  • NC_000014.9:g.23416003C>A
  • NG_007884.1:g.24659G>T
  • NG_086395.1:g.858C>A
  • NM_000257.4:c.4953+1G>TMANE SELECT
  • NM_001407004.1:c.4953+1G>T
  • LRG_384:g.24659G>T
  • NC_000014.8:g.23885212C>A
  • NR_126491.1:n.264C>A
Molecular consequence:
  • NR_126491.1:n.264C>A - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NM_000257.4:c.4953+1G>T - splice donor variant - [Sequence Ontology: SO:0001575]
  • NM_001407004.1:c.4953+1G>T - splice donor variant - [Sequence Ontology: SO:0001575]
Observations:
2

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
SCV004816533All of Us Research Program, National Institutes of Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain Significance
(Sep 17, 2023) 		germlineclinical testing

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

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknown2not 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 All of Us Research Program, National Institutes of Health, SCV004816533.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not provided2not providednot providedclinical testing PubMed (1)

Description

This variant causes a G to T nucleotide substitution at the +1 position of intron 34 of the MYH7 gene. Splice site prediction tools predict that this variant may have a significant impact on RNA splicing. Although this prediction has not been confirmed in published RNA studies, this variant is expected to result in an absent or disrupted protein product. To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with MYH7-related disorders in the literature. Clinical relevance of loss-of-function MYH7 truncation and splice variants in autosomal dominant cardiovascular disorders is not clearly established. 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.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknown108544not providednot provided2not providednot providednot provided

Last Updated: May 7, 2024