ClinVar Genomic variation as it relates to human health
NM_007294.4(BRCA1):c.-20+11C>T
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.-20+11C>T
Variation ID: 125464 Accession: VCV000125464.18
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 17q21.31 17: 43125260 (GRCh38) [ NCBI UCSC ] 17: 41277277 (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 Apr 4, 2014 Mar 16, 2024 Feb 1, 2024 - HGVS
- ... more HGVS ... less HGVS
- Protein change
- Other names
- IVS1+11C>T
- Canonical SPDI
- NC_000017.11:43125259:G:A
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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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0.00040 (A)
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Allele frequency
Help
The frequency of the allele represented by this VCV record.
1000 Genomes Project 30x 0.00031
1000 Genomes Project 0.00040
The Genome Aggregation Database (gnomAD) 0.00042
The Genome Aggregation Database (gnomAD), exomes 0.00044
Trans-Omics for Precision Medicine (TOPMed) 0.00046
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
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. |
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BRCA1 | Sufficient evidence for dosage pathogenicity | No evidence available |
GRCh38 GRCh37 |
12881 | 14666 | |
LOC111589215 | - | - | - | GRCh38 | - | 138 |
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. |
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Likely benign (3) |
criteria provided, single submitter
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Oct 25, 2016 | RCV000111489.5 | |
Benign (1) |
criteria provided, single submitter
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Jan 23, 2014 | RCV000123934.6 | |
Benign (1) |
criteria provided, single submitter
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Feb 1, 2024 | RCV000860869.9 | |
Likely benign (1) |
criteria provided, single submitter
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Feb 28, 2022 | RCV002258793.1 | |
Likely benign (3) |
no assertion criteria provided
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- | RCV001689635.5 | |
Likely benign (1) |
no assertion criteria provided
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- | RCV001353442.2 | |
BRCA1-related disorder
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Likely benign (1) |
criteria provided, single submitter
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Dec 15, 2022 | RCV004554698.1 |
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. |
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Benign
(Jan 23, 2014)
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criteria provided, single submitter
Method: clinical testing
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not specified
Affected status: yes
Allele origin:
germline
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GeneDx
Accession: SCV000167321.11
First in ClinVar: Jun 23, 2014 Last updated: May 29, 2016 |
Comment:
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at … (more)
This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. (less)
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Likely benign
(Feb 28, 2022)
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criteria provided, single submitter
Method: curation
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Hereditary cancer-predisposing syndrome
Affected status: unknown
Allele origin:
germline
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Sema4, Sema4
Accession: SCV002538079.1
First in ClinVar: Jun 24, 2022 Last updated: Jun 24, 2022 |
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Likely benign
(Oct 25, 2016)
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criteria provided, single submitter
Method: clinical testing
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Breast-ovarian cancer, familial, susceptibility to, 1
Affected status: unknown
Allele origin:
unknown
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Counsyl
Accession: SCV000489588.2
First in ClinVar: Apr 04, 2014 Last updated: Dec 24, 2022 |
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Benign
(Feb 01, 2024)
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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: SCV001001040.6
First in ClinVar: Dec 17, 2019 Last updated: Feb 14, 2024 |
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Likely benign
(Dec 15, 2022)
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criteria provided, single submitter
Method: clinical testing
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BRCA1-related condition
Affected status: unknown
Allele origin:
germline
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PreventionGenetics, part of Exact Sciences
Accession: SCV004714555.1
First in ClinVar: Mar 16, 2024 Last updated: Mar 16, 2024 |
Comment:
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).
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Uncertain significance
(Jun 22, 1999)
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no assertion criteria provided
Method: clinical testing
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Breast-ovarian cancer, familial 1
Affected status: yes
Allele origin:
germline
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Breast Cancer Information Core (BIC) (BRCA1)
Accession: SCV000143931.1
First in ClinVar: Apr 04, 2014 Last updated: Apr 04, 2014 |
Number of individuals with the variant: 1
Geographic origin: Italy
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Likely benign
(-)
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no assertion criteria provided
Method: clinical testing
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not provided
Affected status: yes
Allele origin:
germline
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Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Additional submitter:
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Study: VKGL Data-share Consensus
Accession: SCV001952085.1 First in ClinVar: Oct 02, 2021 Last updated: Oct 02, 2021 |
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Likely benign
(-)
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no assertion criteria provided
Method: clinical testing
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not provided
Affected status: yes
Allele origin:
germline
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Genome Diagnostics Laboratory, University Medical Center Utrecht
Additional submitter:
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Study: VKGL Data-share Consensus
Accession: SCV001978335.1 First in ClinVar: Oct 16, 2021 Last updated: Oct 16, 2021 |
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Likely benign
(Mar 02, 2020)
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no assertion criteria provided
Method: clinical testing
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Breast-ovarian cancer, familial, susceptibility to, 1
Affected status: yes
Allele origin:
germline
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BRCAlab, Lund University
Accession: SCV004244212.1
First in ClinVar: Feb 14, 2024 Last updated: Feb 14, 2024 |
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Likely benign
(-)
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no assertion criteria provided
Method: clinical testing
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Malignant tumor of breast
Affected status: yes
Allele origin:
unknown
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Department of Pathology and Laboratory Medicine, Sinai Health System
Additional submitter:
Franklin by Genoox
Study: The Canadian Open Genetics Repository (COGR)
Accession: SCV000591226.2 First in ClinVar: May 29, 2016 Last updated: Apr 13, 2021 |
Comment:
The c.-20+11C>T variant was not identified in the literature. It was reported in the dbSNP database (ID: rs273898672) but no frequency data was provided and … (more)
The c.-20+11C>T variant was not identified in the literature. It was reported in the dbSNP database (ID: rs273898672) but no frequency data was provided and so the variant’s frequency in the general population is not known. This variant occurs upstream of the start site and +11bp away from the exon/intron junction of non-coding exon 1 of the BRCA1 gene. The variant is located in the 5' splice region (or near the 3' splice site of exon 1) but does not affect the invariant +1 and +2 positions. This variant occurs outside of the splicing consensus sequence; +3 to +6 are part of the splicing consensus sequence and variants involving these positions sometimes affect splicing. Furthermore, in-silico or computational prediction software (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a significantly different splicing affect, increasing the likelihood this variant may not have clinical significance; although this information is not predictive enough to out pathogenicity. In summary, based on the above information, the clinical significance of this variant cannot be determined with certainty at this time, although we would lean towards a more benign role for this variant. This variant is classified as predicted benign. (less)
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Likely benign
(-)
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no assertion criteria provided
Method: clinical testing
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not provided
Affected status: yes
Allele origin:
germline
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Clinical Genetics Laboratory, Department of Pathology, Netherlands Cancer Institute
Additional submitter:
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Study: VKGL Data-share Consensus
Accession: SCV001906446.1 First in ClinVar: Sep 24, 2021 Last updated: Sep 24, 2021 |
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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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Low incidence of BRCA1 mutations among Italian families with breast and ovarian cancer. | Santarosa M | International journal of cancer | 1998 | PMID: 9808526 |
Germ-line BRCA1 mutations in selected men with prostate cancer. | Langston AA | American journal of human genetics | 1996 | PMID: 8644752 |
Text-mined citations for rs273898672 ...
HelpRecord last updated May 27, 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.