VCV000583687.2 - ClinVar

NC_000009.12:g.(?_21968219)_(21994341_?)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_000009.12:g.(?_21968219)_(21994341_?)del

Variation ID: 583687 Accession: VCV000583687.2

Type and length

Deletion, 26,123 bp

Location

Cytogenetic: 9p21.3 9: 21968219-21994341 (GRCh38) [ NCBI UCSC ] 9: 21968218-21994340 (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	May 16, 2022	May 16, 2022	Jun 21, 2021

HGVS

Nucleotide	Protein	Molecular consequence
NC_000009.12:g.(?_21968219)_(21994341_?)del
NC_000009.11:g.(?_21968218)_(21994340_?)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.
CDKN2A		Sufficient evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	1261	1413
LOC130001603	-	-	-	GRCh38	-	93
LOC130001604	-	-	-	GRCh38	-	43
LOC130001605	-	-	-	GRCh38	-	42

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 melanoma	Pathogenic (1)	criteria provided, single submitter	Jun 21, 2021	RCV000707967.3

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.
Pathogenic (Jun 21, 2021)	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015)) Method: clinical testing	Familial melanoma Affected status: unknown Allele origin: germline	Labcorp Genetics (formerly Invitae), Labcorp Accession: SCV000837077.2 First in ClinVar: Oct 10, 2018 Last updated: May 16, 2022	Publications: PubMed (3) PubMed: 28492532‚ 9622062‚ 15146471 Comment: The CDKN2A gene encodes two different proteins, p16INK4a and p14ARF, which are translated from alternative transcripts that have different open reading frames. This variant is … (more) The CDKN2A gene encodes two different proteins, p16INK4a and p14ARF, which are translated from alternative transcripts that have different open reading frames. This variant is a gross deletion of the entire CDKN2A genomic region, encompassing all exons of the p16INK4a and p14ARF transcripts. The boundaries of this event are unknown as the deletion extends beyond the assayed region for these transcripts and therefore may encompass additional genes. This is expected to result in absent p16INK4a and p14ARF protein products. Similar gross deletions encompassing both of the CDKN2A (p16INK4a and p14ARF) coding sequences have been reported to segregate with melanoma and nervous system tumors in two independent families (PMID: 9622062). Loss-of-function variants in CDKN2A are known to be pathogenic (PMID: 15146471). For these reasons, this variant has been classified as Pathogenic. The evidence indicates that this variant confers risk of developing both CDKN2A (p16INK4a)-associated and (p14ARF)-associated conditions. (less)

Comment:

The CDKN2A gene encodes two different proteins, p16INK4a and p14ARF, which are translated from alternative transcripts that have different open reading frames. This variant is a gross deletion of the entire CDKN2A genomic region, encompassing all exons of the p16INK4a and p14ARF transcripts. The boundaries of this event are unknown as the deletion extends beyond the assayed region for these transcripts and therefore may encompass additional genes. This is expected to result in absent p16INK4a and p14ARF protein products. Similar gross deletions encompassing both of the CDKN2A (p16INK4a and p14ARF) coding sequences have been reported to segregate with melanoma and nervous system tumors in two independent families (PMID: 9622062). Loss-of-function variants in CDKN2A are known to be pathogenic (PMID: 15146471). For these reasons, this variant has been classified as Pathogenic. The evidence indicates that this variant confers risk of developing both CDKN2A (p16INK4a)-associated and (p14ARF)-associated conditions.

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 melanoma, pancreatic cancer and germline CDKN2A mutations.	Goldstein AM	Human mutation	2004	PMID: 15146471
Germ-line deletion involving the INK4 locus in familial proneness to melanoma and nervous system tumors.	Bahuau M	Cancer research	1998	PMID: 9622062

Text-mined citations for this variant ...

Record last updated Sep 29, 2024

ClinVar Genomic variation as it relates to human health

NC_000009.12:g.(?_21968219)_(21994341_?)del

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...