VCV000864287.11 - ClinVar

NM_000257.4(MYH7):c.3137T>G (p.Met1046Arg)

Germline

Classification

criteria provided, multiple submitters, no conflicts. Learn more about how ClinVar calculates review status.

Uncertain significance

4 out of 4 submissions contributed to this 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.

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_000257.4(MYH7):c.3137T>G (p.Met1046Arg)

Variation ID: 864287 Accession: VCV000864287.11

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 14q11.2 14: 23422288 (GRCh38) [ NCBI UCSC ] 14: 23891497 (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	Apr 15, 2020	Feb 15, 2026	Mar 5, 2025

HGVS

Nucleotide	Protein	Molecular consequence
NM_000257.4:c.3137T>G MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000248.2:p.Met1046Arg	missense
NM_000257.2:c.3137T>G
NC_000014.9:g.23422288A>C
NC_000014.8:g.23891497A>C
NG_007884.1:g.18374T>G
LRG_384:g.18374T>G

... more HGVS ... less HGVS

Protein change

M1046R

Other names

Canonical SPDI

NC_000014.9:23422287:A:C

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.

Trans-Omics for Precision Medicine (TOPMed) 0.00000

Exome Aggregation Consortium (ExAC) 0.00001

Links

ClinGen: CA035837 dbSNP: rs763760498 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	4353	5861

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	Uncertain significance (1)	criteria provided, single submitter	Mar 5, 2025	RCV001071435.8
Congenital myopathy with fiber type disproportion Dilated cardiomyopathy 1S Hypertrophic cardiomyopathy 1 MYH7-related skeletal myopathy Myopathy, myosin storage, autosomal recessive Myosin storage myopathy	Uncertain significance (1)	criteria provided, single submitter	Feb 23, 2022	RCV002482143.1
Cardiomyopathy	Uncertain significance (1)	criteria provided, single submitter	Jun 8, 2023	RCV004000201.2
not provided	Uncertain significance (1)	criteria provided, single submitter	Feb 26, 2025	RCV005629934.1

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.	Expand all rows Collapse all rows 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 (Feb 23, 2022) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	MYH7-related skeletal myopathy Myosin storage myopathy Hypertrophic cardiomyopathy 1 Myopathy, myosin storage, autosomal recessive Congenital myopathy 4A, autosomal dominant Myosin storage myopathy Dilated cardiomyopathy 1S	Fulgent Genetics, Fulgent Genetics Accession: SCV002786641.1 First in ClinVar: Dec 31, 2022 Last updated: Dec 31, 2022	Observation: 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: unknown Affected status: unknown

Uncertain Significance (Jun 08, 2023) C Contributing to aggregate classification	criteria provided, single submitter (ACMG Guidelines, 2015)	Cardiomyopathy (Autosomal dominant inheritance)	All of Us Research Program, National Institutes of Health Accession: SCV004832134.1 First in ClinVar: Apr 20, 2024 Last updated: Apr 20, 2024 Comment: This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of … (more) This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of variant classification. Additional details can be found in publication PMID: 35346344, PMCID: PMC8962531 (less)	Comment: show This missense variant replaces methionine with arginine at codon 1046 of the MYH7 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 2/282854 chromosomes 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. (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown more Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Number of individuals with the variant: 1 Zygosity: Single Heterozygote

Uncertain significance (Feb 26, 2025) C Contributing to aggregate classification	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	not provided	GeneDx Accession: SCV006311808.1 First in ClinVar: Sep 06, 2025 Last updated: Sep 06, 2025	Comment: show Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 22958901) (less) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: yes Observation 1 Collection method: clinical testing Allele origin: germline Affected status: yes

Uncertain significance (Mar 05, 2025) C Contributing to aggregate classification	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Hypertrophic cardiomyopathy	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV001236741.7 First in ClinVar: Apr 15, 2020 Last updated: Feb 15, 2026	Comment: show This sequence change replaces methionine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1046 of the MYH7 protein (p.Met1046Arg). This variant is present in population databases (rs763760498, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with MYH7-related conditions. ClinVar contains an entry for this variant (Variation ID: 864287). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt MYH7 protein function with a positive predictive value of 95%. 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) Observation: 1 Collection method: clinical testing Allele origin: germline Affected status: unknown Observation 1 Collection method: clinical testing Allele origin: germline Affected status: unknown

Comment:

This missense variant replaces methionine with arginine at codon 1046 of the MYH7 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 0.7, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with cardiovascular disorders in the literature. This variant has been identified in 2/282854 chromosomes 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.

Comment:

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 22958901)

Comment:

This sequence change replaces methionine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 1046 of the MYH7 protein (p.Met1046Arg). This variant is present in population databases (rs763760498, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with MYH7-related conditions. ClinVar contains an entry for this variant (Variation ID: 864287). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is expected to disrupt MYH7 protein function with a positive predictive value of 95%. 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.

Citations for germline classification of this variant

There are no citations for germline classification of this variant in ClinVar. If you know of citations for this variation, please consider submitting that information to ClinVar.

Text-mined citations for rs763760498 ...

These citations are identified by LitVar using the rs number, so they may include citations for more than one variant at this location. Please review the LitVar results carefully for your variant of interest.

Record last updated Feb 15, 2026