rs80357585
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The ENST00000357654.9(BRCA1):c.1823_1826del(p.Lys608IlefsTer3) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,770 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★★). Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000034 ( 0 hom. )
Consequence
BRCA1
ENST00000357654.9 frameshift
ENST00000357654.9 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 1.88
Genes affected
BRCA1 (HGNC:1100): (BRCA1 DNA repair associated) This gene encodes a 190 kD nuclear phosphoprotein that plays a role in maintaining genomic stability, and it also acts as a tumor suppressor. The BRCA1 gene contains 22 exons spanning about 110 kb of DNA. The encoded protein combines with other tumor suppressors, DNA damage sensors, and signal transducers to form a large multi-subunit protein complex known as the BRCA1-associated genome surveillance complex (BASC). This gene product associates with RNA polymerase II, and through the C-terminal domain, also interacts with histone deacetylase complexes. This protein thus plays a role in transcription, DNA repair of double-stranded breaks, and recombination. Mutations in this gene are responsible for approximately 40% of inherited breast cancers and more than 80% of inherited breast and ovarian cancers. Alternative splicing plays a role in modulating the subcellular localization and physiological function of this gene. Many alternatively spliced transcript variants, some of which are disease-associated mutations, have been described for this gene, but the full-length natures of only some of these variants has been described. A related pseudogene, which is also located on chromosome 17, has been identified. [provided by RefSeq, May 2020]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 17-43093704-ATTCT-A is Pathogenic according to our data. Variant chr17-43093704-ATTCT-A is described in ClinVar as [Pathogenic]. Clinvar id is 54361.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr17-43093704-ATTCT-A is described in Lovd as [Pathogenic]. Variant chr17-43093704-ATTCT-A is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
BRCA1 | NM_007294.4 | c.1823_1826del | p.Lys608IlefsTer3 | frameshift_variant | 10/23 | ENST00000357654.9 | NP_009225.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
BRCA1 | ENST00000357654.9 | c.1823_1826del | p.Lys608IlefsTer3 | frameshift_variant | 10/23 | 1 | NM_007294.4 | ENSP00000350283 | P4 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 genomes
Cov.:
32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251062Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135746
GnomAD3 exomes
AF:
AC:
1
AN:
251062
Hom.:
AF XY:
AC XY:
0
AN XY:
135746
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461770Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 727186
GnomAD4 exome
AF:
AC:
5
AN:
1461770
Hom.:
AF XY:
AC XY:
0
AN XY:
727186
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome Cov.: 32
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:17
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 1 Pathogenic:10
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 16, 2021 | - - |
Pathogenic, no assertion criteria provided | clinical testing | Sharing Clinical Reports Project (SCRP) | Mar 07, 2011 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Nov 17, 2015 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet | May 27, 2024 | PVS1; PM5_PTC_Strong - |
Pathogenic, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Jun 20, 2023 | This variant deletes 4 nucleotides in exon 10 of the BRCA1 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 identified in 1/251062 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA1 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 | Department of Medical Genetics, Oslo University Hospital | Jul 31, 2015 | - - |
Pathogenic, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Apr 22, 2016 | Variant allele predicted to encode a truncated non-functional protein. - |
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, criteria provided, single submitter | literature only | Counsyl | Jan 15, 2015 | - - |
Pathogenic, no assertion criteria provided | clinical testing | Breast Cancer Information Core (BIC) (BRCA1) | May 29, 2002 | - - |
Hereditary cancer-predisposing syndrome Pathogenic:3
Pathogenic, criteria provided, single submitter | curation | Sema4, Sema4 | Nov 03, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Ambry Genetics | Mar 10, 2021 | The c.1823_1826delAGAA pathogenic mutation, located in coding exon 9 of the BRCA1 gene, results from a deletion of 4 nucleotides at nucleotide positions 1823 to 1826, causing a translational frameshift with a predicted alternate stop codon (p.K608Ifs*3). This alteration has been reported in multiple individuals diagnosed with breast and/or ovarian cancer (Gayther SA et al. Am. J. Hum. Genet. 1999 Oct;65:1021-9; Shattuck-Eidens D et al. JAMA. 1997 Oct;278:1242-50; Thomassen M et al. Acta Oncol. 2008;47:772-7; Song H et al. Hum. Mol. Genet. 2014 Sep;23:4703-9; Loizidou MA et al. Clin. Genet. 2017 Apr;91:611-615; Heramb C et al. Hered Cancer Clin Pract, 2018 Jan;16:3; Bertelsen B et al. NPJ Genom Med, 2019 Jun;4:13). This alteration was also identified in a large, worldwide study of BRCA1/2 mutation positive families (Rebbeck TR et al. Hum Mutat, 2018 05;39:593-620). 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 | Feb 28, 2023 | This variant deletes 4 nucleotides in exon 10 of the BRCA1 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 observed in individuals affected with breast and ovarian cancer (PMID: 24728189, 25452441, 31263571, 33471991). This variant has been identified in 1/251062 chromosomes in the general population by the Genome Aggregation Database (gnomAD). Loss of BRCA1 function is a known mechanism of disease (clinicalgenome.org). Based on the available evidence, this variant is classified as Pathogenic. - |
not provided Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Nov 02, 2022 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Dec 05, 2022 | 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 at significant frequency in large population cohorts (gnomAD); Truncating variants in this gene are considered pathogenic by a well-established clinical consortium and/or database; Also known as 1942_1945_delAGAA and 1942del4; This variant is associated with the following publications: (PMID: 17688236, 16267036, 27882536, 18465347, 29922827, 31263571, 10486320, 24504028, 9333265, 24728189, 14648706, 16287141, 28152038, 26315209, 29339979, 30720243, 14574163, 33804961, 33471991, 29446198, 31853058, 25452441) - |
Hereditary breast ovarian cancer syndrome Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 25, 2024 | This sequence change creates a premature translational stop signal (p.Lys608Ilefs*3) in the BRCA1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in BRCA1 are known to be pathogenic (PMID: 20104584). This variant is present in population databases (rs80357952, gnomAD 0.0009%). This premature translational stop signal has been observed in individual(s) with breast and ovarian cancer (PMID: 9333265, 10486320, 24504028, 24728189, 25452441). This variant is also known as 1942del4 and 608_609del. ClinVar contains an entry for this variant (Variation ID: 54361). For these reasons, this variant has been classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Oct 02, 2020 | Variant summary: BRCA1 c.1823_1826delAGAA (p.Lys608IlefsX3) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant allele was found at a frequency of 3.9e-06 in 254132 control chromosomes. c.1823_1826delAGAA has been reported in the literature in multiple individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (examples- Shattuck-Eidens_1997, Gayther_1999, Judkins_2005, Cunningham_2014, Couch_2015). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Eight other ClinVar submitters, including two expert panels, (evaluation after 2014) have cited the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at