VCV003362878.3 - ClinVar

NM_000256.3(MYBPC3):c.3605del (p.Cys1202fs)

Germline

Classification

criteria provided, single submitter. Learn more about how ClinVar calculates review status.

Pathogenic
Pathogenic (1)

1 out of 2 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_000256.3(MYBPC3):c.3605del (p.Cys1202fs)

Variation ID: 3362878 Accession: VCV003362878.3

Type and length

Deletion, 1 bp

Location

Cytogenetic: 11p11.2 11: 47332588 (GRCh38) [ NCBI UCSC ] 11: 47354139 (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	Oct 20, 2024	Feb 23, 2026	Sep 15, 2024

HGVS

Nucleotide	Protein	Molecular consequence
NM_000256.3:c.3605del MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000247.2:p.Cys1202fs	frameshift
NM_000256.3:c.3605delG MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.		frameshift
NC_000011.10:g.47332588del
NC_000011.9:g.47354139del
NG_007667.1:g.25115del
LRG_386:g.25115del
LRG_386t1:c.3605del	LRG_386p1:p.Cys1202fs

... more HGVS ... less HGVS

Protein change

C1202fs

Other names

Canonical SPDI

NC_000011.10:47332587: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.

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.
MYBPC3		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	4728	4750

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	Pathogenic (2)	criteria provided, single submitter	Sep 15, 2024	RCV004765086.3

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.
Pathogenic (Sep 15, 2024) C Contributing to aggregate classification	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Hypertrophic cardiomyopathy	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV005835259.2 First in ClinVar: Feb 25, 2025 Last updated: Feb 23, 2026	Publications: PubMed (2) PubMed: 19574547‚ 27532257 Comment: show This sequence change creates a premature translational stop signal (p.Cys1202Leufs*35) in the MYBPC3 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MYBPC3 are known to be pathogenic (PMID: 19574547). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 27532257). For these reasons, this variant has been classified as Pathogenic. (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

Uncertain significance (-) N Not contributing to aggregate classification	no assertion criteria provided	hypertrophic cardiomyopathy	Zaffran Lab, Genetics of Cardiac Diseases Laboratory, Marseille Medical Genetics Accession: SCV005374572.1 First in ClinVar: Oct 20, 2024 Last updated: Oct 20, 2024	Observation: 1 Collection method: research Allele origin: unknown Affected status: yes Observation 1 Collection method: research Allele origin: unknown Affected status: yes

Comment:

This sequence change creates a premature translational stop signal (p.Cys1202Leufs*35) in the MYBPC3 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in MYBPC3 are known to be pathogenic (PMID: 19574547). This variant is not present in population databases (gnomAD no frequency). This premature translational stop signal has been observed in individual(s) with hypertrophic cardiomyopathy (PMID: 27532257). For these reasons, this variant has been classified as Pathogenic.

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
Evidence from human myectomy samples that MYBPC3 mutations cause hypertrophic cardiomyopathy through haploinsufficiency.	Marston S	Circulation research	2009	PMID: 19574547

Text-mined citations for this variant ...

Record last updated Feb 25, 2026