VCV003245402.1 - ClinVar

NC_000008.10:g.(?_118649470)_(122282519_?)del

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.

(1)

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.

Pathogenic

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NC_000008.10:g.(?_118649470)_(122282519_?)del

Variation ID: 3245402 Accession: VCV003245402.1

Type and length

Deletion, 3,633,050 bp

Location

Cytogenetic: 8q24.11-24.12 8: 118649470-122282519 (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	Jun 30, 2024	Jun 29, 2024	Nov 12, 2023

HGVS

Nucleotide	Protein	Molecular consequence
NC_000008.10:g.(?_118649470)_(122282519_?)del

Protein change

Other names

Canonical SPDI

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.
EXT1		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	999	1074
CCN3		-	-	GRCh38 GRCh37	19	80
COL14A1		-	-	GRCh38 GRCh37	216	267
COLEC10		-	-	GRCh38 GRCh37	23	91
DEPTOR		-	-	GRCh38 GRCh37	24	86
DSCC1		-	-	GRCh38 GRCh37	16	76
ENPP2		-	-	GRCh38 GRCh37	64	128
MAL2		-	-	GRCh38 GRCh37	3	66
MRPL13		-	-	GRCh38 GRCh37	13	64
MTBP		-	-	GRCh38 GRCh37	60	111

There are 4 more genes affected by this variant. See the full set of genes in Variation Viewer (GRCh37) and ClinGen Dosage Sensitivity Map.

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.
Multiple congenital exostosis	Pathogenic (1)	criteria provided, single submitter	Nov 12, 2023	RCV004583162.2

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.
Pathogenic (Nov 12, 2023)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	Multiple congenital exostosis Affected status: unknown Allele origin: unknown	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV005062772.1 First in ClinVar: Jun 29, 2024 Last updated: Jun 29, 2024	Publications: PubMed (4) PubMed: 10679937‚ 11391482‚ 19810120‚ 29126381 Comment: A gross deletion of the genomic region encompassing the full coding sequence of the EXT1 gene has been identified. Loss-of-function variants in EXT1 are known … (more) A gross deletion of the genomic region encompassing the full coding sequence of the EXT1 gene has been identified. Loss-of-function variants in EXT1 are known to be pathogenic (PMID: 10679937, 11391482, 19810120). The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. A similar copy number variant has been observed in individual(s) with multiple exotoses (PMID: 29126381). For these reasons, this variant has been classified as Pathogenic. (less)

Comment:

A gross deletion of the genomic region encompassing the full coding sequence of the EXT1 gene has been identified. Loss-of-function variants in EXT1 are known to be pathogenic (PMID: 10679937, 11391482, 19810120). The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. A similar copy number variant has been observed in individual(s) with multiple exotoses (PMID: 29126381). For these reasons, this variant has been classified as Pathogenic.

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
A genotype-phenotype study of hereditary multiple exostoses in forty-six Chinese patients.	Li Y	BMC medical genetics	2017	PMID: 29126381
Multiple osteochondromas: mutation update and description of the multiple osteochondromas mutation database (MOdb).	Jennes I	Human mutation	2009	PMID: 19810120
Etiological point mutations in the hereditary multiple exostoses gene EXT1: a functional analysis of heparan sulfate polymerase activity.	Cheung PK	American journal of human genetics	2001	PMID: 11391482
Molecular basis of multiple exostoses: mutations in the EXT1 and EXT2 genes.	Wuyts W	Human mutation	2000	PMID: 10679937

Text-mined citations for this variant ...

Record last updated Sep 30, 2024

ClinVar Genomic variation as it relates to human health

NC_000008.10:g.(?_118649470)_(122282519_?)del

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...