VCV002137560.3 - ClinVar

NM_000257.4(MYH7):c.2699A>T (p.Asp900Val)

Germline

Classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

(2)

Stars represent the aggregate review status, or the level of review supporting the aggregate germline classification for this VCV record. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. The number of submissions which contribute to this review status is shown in parentheses.

Conflicting classifications of pathogenicity
Likely pathogenic(1); Uncertain significance(1)

criteria provided, conflicting classifications

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_000257.4(MYH7):c.2699A>T (p.Asp900Val)

Variation ID: 2137560 Accession: VCV002137560.3

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 14q11.2 14: 23424130 (GRCh38) [ NCBI UCSC ] 14: 23893339 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Feb 8, 2023	Nov 3, 2024	Mar 1, 2024

HGVS

Nucleotide	Protein	Molecular consequence
NM_000257.4:c.2699A>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000248.2:p.Asp900Val	missense
NM_001407004.1:c.2699A>T	NP_001393933.1:p.Asp900Val	missense
NC_000014.9:g.23424130T>A
NC_000014.8:g.23893339T>A
NG_007884.1:g.16532A>T
LRG_384:g.16532A>T
LRG_384t1:c.2699A>T	LRG_384p1:p.Asp900Val

... more HGVS ... less HGVS

Protein change

D900V

Other names

Canonical SPDI

NC_000014.9:23424129:T:A

Functional consequence Help The effect of the variant on RNA or protein function, based on experimental evidence from submitters.

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

Links

VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
MYH7		No evidence available	No evidence available	GRCh38 GRCh37	-	-

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Hypertrophic cardiomyopathy	Conflicting interpretations of pathogenicity (2)	criteria provided, conflicting classifications	Mar 1, 2024	RCV003058430.4

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	More information Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Uncertain significance (May 01, 2022)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	Hypertrophic cardiomyopathy Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV003442255.2 First in ClinVar: Feb 07, 2023 Last updated: Feb 14, 2024	Publications: PubMed (2) PubMed: 27247418‚ 27532257 Comment: This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 900 of the MYH7 protein … (more) This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 900 of the MYH7 protein (p.Asp900Val). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 27247418). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant is found within a region of MYH7 between codons 181 and 937 that contains the majority of the myosin head domain. Missense variants in this region have been shown to be significantly overrepresented in individuals with hypertrophic cardiomyopathy (PMID: 27532257). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. (less)
Likely pathogenic (Mar 01, 2024)	criteria provided, single submitter (ACMG Guidelines, 2015) Method: research	Hypertrophic cardiomyopathy Affected status: yes Allele origin: germline	Lildballe Lab, Aarhus University Hospital Accession: SCV005200551.1 First in ClinVar: Nov 03, 2024 Last updated: Nov 03, 2024	Publications: PubMed (1) PubMed: 25741897 Comment: PM1(m), PM2(sup), PP3(sup)

Comment:

This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 900 of the MYH7 protein (p.Asp900Val). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 27247418). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. This variant is found within a region of MYH7 between codons 181 and 937 that contains the majority of the myosin head domain. Missense variants in this region have been shown to be significantly overrepresented in individuals with hypertrophic cardiomyopathy (PMID: 27532257). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

Germline Functional Evidence

There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar.

Comment:

Citations for germline classification of this variant

Title	Author	Journal	Year	Link
Reassessment of Mendelian gene pathogenicity using 7,855 cardiomyopathy cases and 60,706 reference samples.	Walsh R	Genetics in medicine : official journal of the American College of Medical Genetics	2017	PMID: 27532257
Multidimensional structure-function relationships in human β-cardiac myosin from population-scale genetic variation.	Homburger JR	Proceedings of the National Academy of Sciences of the United States of America	2016	PMID: 27247418
Hybridisation potential of 1',3'-Di-O-methylaltropyranoside nucleic acids.	Venkatesham A	Molecules (Basel, Switzerland)	2015	PMID: 25741897

Text-mined citations for this variant ...

Record last updated Nov 03, 2024

ClinVar Genomic variation as it relates to human health

NM_000257.4(MYH7):c.2699A>T (p.Asp900Val)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...