rs886040509
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong
The NM_000059.4(BRCA2):c.4030_4035delinsC(p.Asn1344HisfsTer6) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Pathogenic (★★★). Synonymous variant affecting the same amino acid position (i.e. N1344N) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 33)
Consequence
BRCA2
NM_000059.4 frameshift
NM_000059.4 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 0.617
Genes affected
BRCA2 (HGNC:1101): (BRCA2 DNA repair associated) Inherited mutations in BRCA1 and this gene, BRCA2, confer increased lifetime risk of developing breast or ovarian cancer. Both BRCA1 and BRCA2 are involved in maintenance of genome stability, specifically the homologous recombination pathway for double-strand DNA repair. The largest exon in both genes is exon 11, which harbors the most important and frequent mutations in breast cancer patients. The BRCA2 gene was found on chromosome 13q12.3 in human. The BRCA2 protein contains several copies of a 70 aa motif called the BRC motif, and these motifs mediate binding to the RAD51 recombinase which functions in DNA repair. BRCA2 is considered a tumor suppressor gene, as tumors with BRCA2 mutations generally exhibit loss of heterozygosity (LOH) of the wild-type allele. [provided by RefSeq, May 2020]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PP5
?
Variant 13-32338385-AATGAT-C is Pathogenic according to our data. Variant chr13-32338385-AATGAT-C is described in ClinVar as [Pathogenic]. Clinvar id is 266788.Status of the report is reviewed_by_expert_panel, 3 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BRCA2 | NM_000059.4 | c.4030_4035delinsC | p.Asn1344HisfsTer6 | frameshift_variant | 11/27 | ENST00000380152.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.4030_4035delinsC | p.Asn1344HisfsTer6 | frameshift_variant | 11/27 | 5 | NM_000059.4 | A2 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:8
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Pathogenic:3
Pathogenic, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Oct 02, 2023 | This variant deletes 6 nucleotides and inserts 1 nucleotide in exon 11 of the BRCA2 gene, creating a frameshift and premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in 10 individuals affected with breast and ovarian cancer from 6 families in Northern Spain (PMID: 23683081). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA2 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA), c/o University of Cambridge | Oct 02, 2015 | - - |
Pathogenic, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Oct 18, 2016 | Variant allele predicted to encode a truncated non-functional protein. - |
not provided Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Mar 04, 2021 | Frameshift variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed in large population cohorts (Lek et al., 2016); Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; Also known as 4258_4263delinsC; Identified in several individuals with breast and/or ovarian cancer (Blay 2013); This variant is associated with the following publications: (PMID: 23683081) - |
Pathogenic, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Jan 08, 2018 | - - |
Hereditary cancer-predisposing syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 21, 2017 | The c.4030_4035delAATGATinsC pathogenic mutation, located in coding exon 10 of the BRCA2 gene, results from the deletion of 6 nucleotides (AATGAT) and insertion of one nucleotide (C), causing a translational frameshift with a predicted alternate stop codon (p.N1344Hfs*6). In one study, this mutation was identified in six breast and/or ovarian cancer families from a small, geographically isolated region in Northern Spain (Blay P et al. BMC Cancer, 2013 May;13:243). In addition to the clinical data presented in the literature, this alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. - |
Pathogenic, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Sep 15, 2023 | This variant deletes 6 nucleotides and inserts 1 nucleotide in exon 11 of the BRCA2 gene, creating a frameshift and premature translation stop signal. This variant is expected to result in an absent or non-functional protein product. This variant has been reported in 10 individuals affected with breast and ovarian cancer from 6 families in Northern Spain (PMID: 23683081). This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA2 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
Familial cancer of breast Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 31, 2022 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at