VCV000833390.2 - ClinVar

NC_000017.11:g.(?_31095030)_(31374155_?)dup

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.

Uncertain significance

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NC_000017.11:g.(?_31095030)_(31374155_?)dup

Variation ID: 833390 Accession: VCV000833390.2

Type and length

Duplication, 279,126 bp

Location

Cytogenetic: 17q11.2 17: 29422048-29701173 (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	Apr 15, 2020	Oct 17, 2019

HGVS

Nucleotide	Protein	Molecular consequence
NC_000017.10:g.(?_29422048)_(29701173_?)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.
NF1		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh38 GRCh37	14121	14559
EVI2A		-	-	GRCh38 GRCh38 GRCh37	-	149
EVI2B		-	-	GRCh38 GRCh38 GRCh37	-	167
OMG		-	-	GRCh38 GRCh38 GRCh37	-	155

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.
Neurofibromatosis, type 1	Uncertain significance (1)	criteria provided, single submitter	Oct 17, 2019	RCV001033833.3

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.	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 (Oct 17, 2019)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	Neurofibromatosis, type 1 Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV001197140.1 First in ClinVar: Apr 15, 2020 Last updated: Apr 15, 2020	Publications: PubMed (4) PubMed: 25205021‚ 18183042‚ 22241097‚ 27629806 Comment: This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the NF1 gene. The boundaries of this … (more) This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the NF1 gene. The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. As the precise location of this event is unknown, it may be in tandem or it may be located elsewhere in the genome. While a whole gene duplication of NF1 alone has not been reported in the literature in individuals with NF1-related disease, microduplications spanning NF1 and the surrounding genomic region have been reported in individuals with variable developmental delay, intellectual disability, and a distinct absence of neurofibromas (PMID: 25205021, 22241097, 18183042, 27629806). These large multigenic duplications in NF1 appear to segregate with disease in several families although a few unaffected carriers have also been observed (PMID: 18183042, 22241097, 25205021). 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)

Comment:

This variant results in a copy number gain of the genomic region encompassing the full coding sequence of the NF1 gene. The boundaries of this event are unknown as they extend beyond the assayed region for this gene and therefore may encompass additional genes. As the precise location of this event is unknown, it may be in tandem or it may be located elsewhere in the genome. While a whole gene duplication of NF1 alone has not been reported in the literature in individuals with NF1-related disease, microduplications spanning NF1 and the surrounding genomic region have been reported in individuals with variable developmental delay, intellectual disability, and a distinct absence of neurofibromas (PMID: 25205021, 22241097, 18183042, 27629806). These large multigenic duplications in NF1 appear to segregate with disease in several families although a few unaffected carriers have also been observed (PMID: 18183042, 22241097, 25205021). 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
Genomic findings in patients with clinical suspicion of 22q11.2 deletion syndrome.	Koczkowska M	Journal of applied genetics	2017	PMID: 27629806
Identification of large NF1 duplications reciprocal to NAHR-mediated type-1 NF1 deletions.	Kehrer-Sawatzki H	Human mutation	2014	PMID: 25205021
NF1 microduplications: identification of seven nonrelated individuals provides further characterization of the phenotype.	Moles KJ	Genetics in medicine : official journal of the American College of Medical Genetics	2012	PMID: 22241097
NF1 microduplication first clinical report: association with mild mental retardation, early onset of baldness and dental enamel hypoplasia?	Grisart B	European journal of human genetics : EJHG	2008	PMID: 18183042

Text-mined citations for this variant ...

Record last updated Sep 29, 2024

ClinVar Genomic variation as it relates to human health

NC_000017.11:g.(?_31095030)_(31374155_?)dup

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...