VCV000180748.1 - ClinVar

GRCh38/hg38 12q13.2(chr12:55845043-55851177)x4

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

no assertion criteria provided

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

GRCh38/hg38 12q13.2(chr12:55845043-55851177)x4

Variation ID: 180748 Accession: VCV000180748.1

Type and length

copy number gain, 6,135 bp

Location

Cytogenetic: 12q13.2 12: 55845043-55851177 (GRCh38) [ NCBI UCSC ] 12: 56238827-56244961 (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 24, 2015	Feb 24, 2015

HGVS

Nucleotide	Protein	Molecular consequence
NC_000012.11:g.(56238827_?)_(?_56244961)dup

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.
MMP19		-	-	GRCh38 GRCh37	50	58

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.
Familial cavitary optic disk anomaly	Pathogenic (1)	no assertion criteria provided	-	RCV000157767.1

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.	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 (-)	no assertion criteria provided Method: case-control, in vitro	Cavitary optic disc anomaly (Autosomal dominant inheritance) Affected status: yes Allele origin: germline	Glaucoma Genetics Lab, University of Iowa Accession: SCV000172435.1 First in ClinVar: Feb 24, 2015 Last updated: Feb 24, 2015	Publications: PubMed (3) PubMed: 25581579‚ 17368552‚ 17362864 Comment: Examination of the cavitary optic disc anomaly (CODA) locus using a large CODA pedigree revealed a 6Kbp heterozygous triplication of DNA sequences upstream of MMP19 … (more) Examination of the cavitary optic disc anomaly (CODA) locus using a large CODA pedigree revealed a 6Kbp heterozygous triplication of DNA sequences upstream of MMP19 segregating with disease. No unaffected or normal subjects had this mutation in which in vitro studies show that the CNV leads to an increase in downstream gene expression. (less) Observation 1: Number of individuals with the variant: 19 Clinical Features: optic pit (present) , morning glory disc (present) , optic nerve coloboma (present) Family history: yes Sex: mixed Method: qPCR Observation 2: Method: Reporter gene assay Result: A single copy of the 6 Kbp DNA sequence spanned by the CNV was transfected upstream of the luciferase gene in a vector under the control of a control SV40 promoter. Analysis showed that the 6Kbp sequence has transcription enhancer activity. A 773bp fragment of the 6Kbp DNA segment increased downstream gene expression 8-fold, suggesting that triplication of this sequence may lead to dysregulation of the downstream gene, MMP19, in CODA patients.

Comment:

Examination of the cavitary optic disc anomaly (CODA) locus using a large CODA pedigree revealed a 6Kbp heterozygous triplication of DNA sequences upstream of MMP19 segregating with disease. No unaffected or normal subjects had this mutation in which in vitro studies show that the CNV leads to an increase in downstream gene expression.

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
Familial cavitary optic disk anomalies: identification of a novel genetic locus.	Fingert JH	American journal of ophthalmology	2007	PMID: 17368552
Familial cavitary optic disk anomalies: clinical features of a large family with examples of progressive optic nerve head cupping.	Honkanen RA	American journal of ophthalmology	2007	PMID: 17362864

Text-mined citations for this variant ...

Record last updated Oct 15, 2023

ClinVar Genomic variation as it relates to human health

GRCh38/hg38 12q13.2(chr12:55845043-55851177)x4

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...