ClinVar Genomic variation as it relates to human health
NM_007294.4(BRCA1):c.4675+2T>G
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.
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.
No data submitted for somatic clinical impact
No data submitted for oncogenicity
Variant Details
- Identifiers
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NM_007294.4(BRCA1):c.4675+2T>G
Variation ID: 252396 Accession: VCV000252396.18
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 17q21.31 17: 43074329 (GRCh38) [ NCBI UCSC ] 17: 41226346 (GRCh37) [ NCBI UCSC ]
- Timeline in ClinVar
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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 Aug 1, 2016 Feb 20, 2024 Mar 7, 2023 - HGVS
- ... more HGVS ... less HGVS
- Protein change
- Other names
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- Canonical SPDI
- NC_000017.11:43074328:A:C
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Functional
consequence HelpThe effect of the variant on RNA or protein function, based on experimental evidence from submitters.
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Global minor allele
frequency (GMAF) HelpThe 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.
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Allele frequency
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The frequency of the allele represented by this VCV record.
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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 | ||
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HI score
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The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
TS score
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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
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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. |
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BRCA1 | Sufficient evidence for dosage pathogenicity | No evidence available |
GRCh38 GRCh37 |
12939 | 14729 |
Conditions - Germline
Condition
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The condition for this variant-condition (RCV) record in ClinVar. |
Classification
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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
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The most recent date that a submitter evaluated this variant for the condition. |
Variation/condition record
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The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page. |
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Likely pathogenic (1) |
criteria provided, single submitter
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May 18, 2016 | RCV000239340.3 | |
Pathogenic (1) |
criteria provided, single submitter
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Jan 20, 2020 | RCV001389864.7 | |
Pathogenic (1) |
criteria provided, single submitter
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Mar 7, 2023 | RCV003327390.1 |
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
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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
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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
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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. |
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Likely pathogenic
(May 18, 2016)
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criteria provided, single submitter
Method: clinical testing
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Breast-ovarian cancer, familial, susceptibility to, 1
(Autosomal dominant inheritance)
Affected status: unknown
Allele origin:
germline
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Quest Diagnostics Nichols Institute San Juan Capistrano
Accession: SCV000296468.2
First in ClinVar: Aug 01, 2016 Last updated: Jan 01, 2022 |
Indication for testing: Hereditary breast and ovarian cancer syndrome (HBOC)
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Pathogenic
(Jan 20, 2020)
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criteria provided, single submitter
Method: clinical testing
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Hereditary breast ovarian cancer syndrome
Affected status: unknown
Allele origin:
germline
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Invitae
Accession: SCV001591385.5
First in ClinVar: May 10, 2021 Last updated: Feb 20, 2024 |
Comment:
For these reasons, this variant has been classified as Pathogenic. Donor and acceptor splice site variants typically lead to a loss of protein function (PMID: … (more)
For these reasons, this variant has been classified as Pathogenic. Donor and acceptor splice site variants typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in BRCA1 are known to be pathogenic (PMID: 20104584). Experimental studies have shown that a different variant at this donor site disrupts mRNA splicing (PMID: 21394826, 18489799). Disruption of this splice site has been observed in individuals with breast and/or ovarian cancer (PMID: 12491499, 21324516, 23767878, 24884479, Invitae). ClinVar contains an entry for this variant (Variation ID: 252396). This variant is not present in population databases (ExAC no frequency). This sequence change affects a donor splice site in intron 14 of the BRCA1 gene. It is expected to disrupt RNA splicing and likely results in an absent or disrupted protein product. (less)
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Pathogenic
(Mar 07, 2023)
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criteria provided, single submitter
Method: clinical testing
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Not Provided
Affected status: yes
Allele origin:
germline
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GeneDx
Accession: SCV004034878.1
First in ClinVar: Sep 16, 2023 Last updated: Sep 16, 2023 |
Comment:
Canonical splice site variant predicted to result in a null allele in a gene for which loss of function is a known mechanism of disease; … (more)
Canonical splice site variant predicted to result in a null allele in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); Has not been previously published as pathogenic or benign to our knowledge; Also known as 4794+2T>G; This variant is associated with the following publications: (PMID: 23767878, 21324516, 21394826, 24884479, 12491499, 16199547, 18489799, 20104584, 26295337, 30464253) (less)
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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. |
Citations for germline classification of this variant
HelpTitle | Author | Journal | Year | Link |
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Hereditary breast and ovarian cancer: assessment of point mutations and copy number variations in Brazilian patients. | Silva FC | BMC medical genetics | 2014 | PMID: 24884479 |
BRCA1/2 mutation screening in high-risk breast/ovarian cancer families and sporadic cancer patient surveilling for hidden high-risk families. | Berzina D | BMC medical genetics | 2013 | PMID: 23767878 |
Splicing and multifactorial analysis of intronic BRCA1 and BRCA2 sequence variants identifies clinically significant splicing aberrations up to 12 nucleotides from the intron/exon boundary. | Whiley PJ | Human mutation | 2011 | PMID: 21394826 |
Frequencies of BRCA1 and BRCA2 mutations among 1,342 unselected patients with invasive ovarian cancer. | Zhang S | Gynecologic oncology | 2011 | PMID: 21324516 |
Characterization of BRCA1 and BRCA2 deleterious mutations and variants of unknown clinical significance in unilateral and bilateral breast cancer: the WECARE study. | Borg A | Human mutation | 2010 | PMID: 20104584 |
Spectrum and characterisation of BRCA1 and BRCA2 deleterious mutations in high-risk Czech patients with breast and/or ovarian cancer. | Machackova E | BMC cancer | 2008 | PMID: 18489799 |
Splicing in action: assessing disease causing sequence changes. | Baralle D | Journal of medical genetics | 2005 | PMID: 16199547 |
Pathologic characteristics of breast parenchyma in patients with hereditary breast carcinoma, including BRCA1 and BRCA2 mutation carriers. | Adem C | Cancer | 2003 | PMID: 12491499 |
Text-mined citations for rs879255293 ...
HelpRecord last updated Jun 02, 2024
This date represents the last time this VCV record was updated. The update may be due to an update to one of the included submitted records (SCVs), or due to an update that ClinVar made to the variant such as adding HGVS expressions or a rs number. So this date may be different from the date of the “most recent submission” reported at the top of this page.