17-43071225-G-C
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_007294.4(BRCA1):c.4689C>G(p.Tyr1563*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,614,030 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★★). Variant results in nonsense mediated mRNA decay.
Frequency
Consequence
NM_007294.4 stop_gained
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 18 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152200Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000399 AC: 1AN: 250704Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135612
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461830Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0AN XY: 727224
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152200Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74364
ClinVar
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 1 Pathogenic:19
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The BRCA1 c.4689C>G (p.Tyr1563Ter) change creates a premature stop codon in exon 15. This change is predicted to cause protein truncation or absence of the protein due to nonsense mediated decay, and other protein truncation variants have been observed in exon 15. This variant has a maximum subpopulation frequency of 0.00088% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). This variant has been observed in individuals with a personal and/or family history of breast and ovarian cancer and has been found to segregate with disease in affected individuals (PMID: 8554067, 20727672, 23110154, 25066507, 27167707). This variant has not been reported in the literature in individuals with Fanconi anemia. In summary, this variant meets criteria to be classified as pathogenic. -
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The c.4689C>G (p.Tyr1563*) variant in the BRCA1 gene has been detected multiple patients with breast cancer and/or ovarian cancer [PMID 8554067, 23110154]. This variant creates a premature stop codon at amino acid position 1563 of the BRCA1 protein. This variant is thus predicted to result in a loss of function of the protein. This variant has not been observed in the ExAC population database. This variant is thus classified as pathogenic. -
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Variant allele predicted to encode a truncated non-functional protein. -
Criteria applied: PVS1,PS4,PM2_SUP -
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not provided Pathogenic:13Uncertain:1
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PM5_strong, PVS1 -
This variant causes the premature termination of BRCA1 protein synthesis. In the published literature, this variant has been reported in individuals with breast and/or ovarian cancer (PMIDs: 29907814 (2018), 28324225 (2017), 8554067 (1996)). The frequency of this variant in the general population, 0.0000088 (1/113148 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is consistent with pathogenicity. Based on the available information, this variant is classified as pathogenic. -
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Nonsense 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; Observed in individuals with a personal or family history consistent with pathogenic variants in this gene (Serova 1996, Shih 2002, Turkovic 2010, Schneegans 2012, Wong-Brown 2015, Nguyen-Dumont 2018); Not observed at a 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 4808C>G; This variant is associated with the following publications: (PMID: 27167707, 30128899, 29422015, 30551077, 34657373, 29922827, 30040829, 28888541, 11844822, 8554067, 22160602, 23110154, 25556971, 24830819, 25682074, 26843898, 25948282, 25085752, 29339979, 28324225, 29907814, 29446198, 30487145, 30216591, 30322717, 20807450, 32072338, 30787465, 30612635, 29625052, 31447099, 35596902, 36367610, 36171877) -
This sequence change creates a premature translational stop signal at codon 1563 (p.Tyr1563*). It is expected to result in an absent or disrupted protein product. Truncating variants in BRCA1 are known to be pathogenic. This particular truncation has been reported in the literature in individuals affected with hereditary breast and ovarian cancer (PMID: 8554067, 23110154, 25066507, 20727672, 27167707). This sequence change is also known as 4808C>G in the literature. This particular variant has been described in the mutation database ClinVar (Variation ID: 37607) as pathogenic. -
The BRCA1 c.4689C>G; p.Tyr1563Ter variant (rs80357433), also known as 4808C>G, is reported in the literature in multiple individuals and families affected with hereditary breast and ovarian cancer (Pern 2012, Rebbeck 2018, Schneegans 2012, Serova 1996). This variant is only observed on one allele in the Genome Aggregation Database, indicating it is not a common polymorphism. This variant induces an early termination codon and is predicted to result in a truncated protein or mRNA subject to nonsense-mediated decay. Based on available information, this variant is considered to be pathogenic. References: Pern F et al. Mutation analysis of BRCA1, BRCA2, PALB2 and BRD7 in a hospital-based series of German patients with triple-negative breast cancer. PLoS One. 2012;7(10):e47993. Rebbeck TR et al. Mutational spectrum in a worldwide study of 29,700 families with BRCA1 or BRCA2 mutations. Hum Mutat. 2018 May;39(5):593-620. Schneegans SM Validation of three BRCA1/2 mutation-carrier probability models Myriad, BRCAPRO and BOADICEA in a population-based series of 183 German families. Fam Cancer. 2012 Jun;11(2):181-8. Serova O et al. A high incidence of BRCA1 mutations in 20 breast-ovarian cancer families. Am J Hum Genet. 1996 Jan;58(1):42-51. -
BRCA1: PVS1, PM2, PS4:Moderate -
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Hereditary breast ovarian cancer syndrome Pathogenic:4
The p.Tyr1563X variant in BRCA1 has been reported in >50 individuals with BRCA1-associated cancers (Breast cancer information core (BIC) database, Serova 1996, Pern 2012, Janavičius 2014, Koczkowska 2016) and was absent from large population studies. This nonsense variant leads to a premature termination codon at position 1563, which is predicted to lead to a truncated or absent protein. Heterozygous loss of function of the BRCA1 gene is an established disease mechanism in hereditary breast and ovarian cancer (HBOC). Additionally, the p.Tyr1563X variant was classified as Pathogenic on April 22, 2016 by the ClinGen-approved ENIGMA Expert Panel (SCV000282332.1). In summary, this variant meets criteria to be classified as pathogenic for HBOC in an autosomal dominant manner based upon its predicted impact to the protein, absence from controls, and numerous reports in affected individuals. -
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This sequence change creates a premature translational stop signal (p.Tyr1563*) 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 (rs80357433, gnomAD 0.002%). This premature translational stop signal has been observed in individual(s) with hereditary breast and ovarian cancer (PMID: 8554067, 20727672, 23110154, 25066507, 27167707). It has also been observed to segregate with disease in related individuals. This variant is also known as 4808C>G. ClinVar contains an entry for this variant (Variation ID: 37607). For these reasons, this variant has been classified as Pathogenic. -
Variant summary: BRCA1 c.4689C>G (p.Tyr1563X) 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 4e-06 in 250704 control chromosomes (gnomAD). c.4689C>G has been reported in the literature in multiple individuals affected with Hereditary Breast And Ovarian Cancer Syndrome (Alsop_2012, Bergman_2005, Couch_2015, Rebbeck_2018). 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. 21 ClinVar submitters, including one expert panel (ENIGMA), (evaluation after 2014) cite the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
Hereditary cancer-predisposing syndrome Pathogenic:2
This variant changes 1 nucleotide in exon 15 of the BRCA1 gene, creating a premature translation stop signal. RNA analyses have shown that this variant leads to an absence of RNA transcript and protein product (PMID: 8554067, 12393792). This variant has been detected in multiple individuals and families affected with breast and ovarian cancer (PMID: 8554067, 11844822, 15951958, 20727672, 20807450, 22160602, 22711857, 22762150, 23110154, 25066507, 25452441, 27167707, 29339979, 33471991). This variant has been identified in 1/250704 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. -
The p.Y1563* pathogenic mutation (also known as c.4689C>G), located in coding exon 14 of the BRCA1 gene, results from a C to G substitution at nucleotide position 4689. This changes the amino acid from a tyrosine to a stop codon within coding exon 14. This mutation has been detected in multiple hereditary breast and ovarian cancer (HBOC) syndrome families (Serova O et al. Am. J. Hum. Genet. 1996 Jan;58:42-51; Iyevleva AG et al. Cancer Lett. 2010 Dec;298:258-63; Schneegans S et al. Fam. Cancer. 2012 Jun;11:181-8; Lecarpentier J et al. Breast Cancer Res. 2012 Jul;14:R99; Pern F et al. PLoS One. 2012;7:e47993; Rebbeck TR et al. Hum. Mutat., 2018 May;39:593-620), and a history weighing algorithm classified it as pathogenic (Pruss D et al. Breast Cancer Res. Treat., 2014 Aug;147:119-32). One study demonstrated that this mutation triggers nonsense mediated decay (NMD) and results in less than half the amount of BRCA1 mRNA compared to wild-type (Perrin-Vidoz L et al. Hum. Mol. Genet. 2002 Nov;11:2805-14). Of note, this alteration is also designated as 4808C>G in published literature. 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. -
BRCA1-related cancer predisposition Pathogenic:1
This variant changes 1 nucleotide in exon 15 of the BRCA1 gene, creating a premature translation stop signal. RNA analyses have shown that this variant leads to an absence of RNA transcript and protein product (PMID: 8554067, 12393792). This variant has been detected in multiple individuals and families affected with breast and ovarian cancer (PMID: 8554067, 11844822, 15951958, 20727672, 20807450, 22160602, 22711857, 22762150, 23110154, 25066507, 25452441, 27167707, 29339979, 33471991). This variant has been identified in 1/250704 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. -
BRCA1-related disorder Pathogenic:1
The BRCA1 c.4689C>G variant is predicted to result in premature protein termination (p.Tyr1563*). This variant has previously been reported to be causative for hereditary breast and ovarian cancer (Serova et al. 1996. PubMed ID: 8554067; Pern et al. 2012. PubMed ID: 23110154). This variant has also been recorded as a breast cancer associated variant within the Breast Cancer Information Core (BIC) database (http://research.nhgri.nih.gov/projects/bic/) and as pathogenic in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/37607/). This variant is reported in 0.00088% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/17-41223242-G-C). Nonsense variants in BRCA1 are expected to be pathogenic. This variant is interpreted as pathogenic. -
Familial cancer of breast Pathogenic:1
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Ovarian neoplasm Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at