ClinVar Genomic variation as it relates to human health
NM_007294.4(BRCA1):c.48T>A (p.Asn16Lys)
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.48T>A (p.Asn16Lys)
Variation ID: 479225 Accession: VCV000479225.9
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 17q21.31 17: 43124049 (GRCh38) [ NCBI UCSC ] 17: 41276066 (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 Jan 1, 2018 May 1, 2024 May 24, 2023 - HGVS
- ... more HGVS ... less HGVS
- Protein change
- N16K
- Other names
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- Canonical SPDI
- NC_000017.11:43124048:A:T
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Functional
consequence HelpThe effect of the variant on RNA or protein function, based on experimental evidence from submitters.
- functionally_normal Sequence Ontology [SO:0002219]
- The saturation genome editing (SGE) assay for BRCA1 NM_007294.3:c.48T>A, a MISSENSE variant, produced a function score of -0.29, corresponding to a functional classification of FUNCTIONAL. SGE function score ranges for classification are as follows: ‘functional’, score > -0.748; ‘intermediate’, -0.748 > score > -1.328; ‘non-functional’, score < -1.328. The median synonymous SNV scored 0.0 and the median nonsense SNV scored -2.12. [submitted by Brotman Baty Institute, University of Washington]
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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
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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
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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 |
13037 | 14843 |
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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Uncertain significance (1) |
criteria provided, single submitter
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Jul 14, 2016 | RCV000565510.4 | |
Uncertain significance (2) |
criteria provided, single submitter
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May 5, 2023 | RCV001077684.4 | |
Uncertain significance (1) |
criteria provided, single submitter
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May 24, 2023 | RCV003530068.2 |
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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Uncertain significance
(May 05, 2023)
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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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Baylor Genetics
Accession: SCV004215139.1
First in ClinVar: Dec 30, 2023 Last updated: Dec 30, 2023 |
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Uncertain significance
(May 24, 2023)
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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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Labcorp Genetics (formerly Invitae), Labcorp
Accession: SCV004363842.1
First in ClinVar: Feb 14, 2024 Last updated: Feb 14, 2024 |
Comment:
This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 16 of the BRCA1 protein (p.Asn16Lys). … (more)
This sequence change replaces asparagine, which is neutral and polar, with lysine, which is basic and polar, at codon 16 of the BRCA1 protein (p.Asn16Lys). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with breast cancer (PMID: 32856854). ClinVar contains an entry for this variant (Variation ID: 479225). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (PMID: 30209399) indicates that this missense variant is not expected to disrupt BRCA1 function. Experimental studies have shown that this missense change does not substantially affect BRCA1 function (PMID: 30209399). 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)
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Uncertain significance
(Jul 14, 2016)
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criteria provided, single submitter
Method: clinical testing
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Hereditary cancer-predisposing syndrome
Affected status: unknown
Allele origin:
germline
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Ambry Genetics
Accession: SCV000661060.5
First in ClinVar: Jan 01, 2018 Last updated: May 01, 2024 |
Comment:
The p.N16K variant (also known as c.48T>A), located in coding exon 1 of the BRCA1 gene, results from a T to A substitution at nucleotide … (more)
The p.N16K variant (also known as c.48T>A), located in coding exon 1 of the BRCA1 gene, results from a T to A substitution at nucleotide position 48. The asparagine at codon 16 is replaced by lysine, an amino acid with similar properties. This variant was not reported in population based cohorts in the following databases: Database of Single Nucleotide Polymorphisms (dbSNP), NHLBI Exome Sequencing Project (ESP), and 1000 Genomes Project. In the ESP, this variant was not observed in 6502 samples (13004 alleles) with coverage at this position. To date, this alteration has been detected with an allele frequency of approximately 0.0003% (greater than 300000 alleles tested) in our clinical cohort. This amino acid position is well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. (less)
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not provided
(-)
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no classification provided
Method: in vitro
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Breast-ovarian cancer, familial 1
Affected status: not applicable
Allele origin:
not applicable
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Brotman Baty Institute, University of Washington
Accession: SCV001243650.1
First in ClinVar: Apr 18, 2020 Last updated: Apr 18, 2020 |
Method: saturation genome editing in haploid cells
Result:
FUNCTIONAL:-0.291203178754204
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Germline Functional Evidence
Functional
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The functional consequence of the variant, based on experimental evidence and provided by the submitter. consequence |
Method
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A brief description of the method used to determine the functional consequence of the variant. A citation for the method is included, when provided by the submitter. |
Result
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A brief description of the result of this method for 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 functional evidence for the germline classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter. |
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functionally_normal
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Method citation(s):
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Brotman Baty Institute, University of Washington
Accession: SCV001243650.1
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Comment:
The saturation genome editing (SGE) assay for BRCA1 NM_007294.3:c.48T>A, a MISSENSE variant, produced a function score of -0.29, corresponding to a functional classification of FUNCTIONAL. … (more)
The saturation genome editing (SGE) assay for BRCA1 NM_007294.3:c.48T>A, a MISSENSE variant, produced a function score of -0.29, corresponding to a functional classification of FUNCTIONAL. SGE function score ranges for classification are as follows: ‘functional’, score > -0.748; ‘intermediate’, -0.748 > score > -1.328; ‘non-functional’, score < -1.328. The median synonymous SNV scored 0.0 and the median nonsense SNV scored -2.12. (less)
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Citations for germline classification of this variant
HelpTitle | Author | Journal | Year | Link |
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Mutation in Exon2 of BRCA1 Gene in Adult Bengali Bangladeshi Female Patients with Breast Cancer: An Experience from Two Tertiary-Care Hospitals. | Chowdhury SS | Asian Pacific journal of cancer prevention : APJCP | 2020 | PMID: 32856854 |
Accurate classification of BRCA1 variants with saturation genome editing. | Findlay GM | Nature | 2018 | PMID: 30209399 |
https://sge.gs.washington.edu/BRCA1/ | - | - | - | - |
Text-mined citations for rs1555600963 ...
HelpRecord last updated Oct 08, 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.