rs4942440
Positions:
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_000059.4(BRCA2):c.6937+177G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.205 in 151,876 control chromosomes in the GnomAD database, including 3,387 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).
Frequency
Genomes: 𝑓 0.20 ( 3387 hom., cov: 32)
Consequence
BRCA2
NM_000059.4 intron
NM_000059.4 intron
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.332
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 Benign. Variant got -20 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.9).
BP6
?
Variant 13-32344830-G-A is Benign according to our data. Variant chr13-32344830-G-A is described in ClinVar as [Benign]. Clinvar id is 209705.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr13-32344830-G-A is described in Lovd as [Benign].
BA1
?
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.245 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BRCA2 | NM_000059.4 | c.6937+177G>A | intron_variant | ENST00000380152.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BRCA2 | ENST00000380152.8 | c.6937+177G>A | intron_variant | 5 | NM_000059.4 | A2 |
Frequencies
GnomAD3 genomes ? AF: 0.205 AC: 31081AN: 151758Hom.: 3378 Cov.: 32
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We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome ? AF: 0.205 AC: 31128AN: 151876Hom.: 3387 Cov.: 32 AF XY: 0.204 AC XY: 15147AN XY: 74240
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489
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3478
ClinVar
Significance: Benign
Submissions summary: Benign:2
Revision: reviewed by expert panel
LINK: link
Submissions by phenotype
Breast-ovarian cancer, familial, susceptibility to, 2 Benign:1
Benign, reviewed by expert panel | curation | Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) | Jan 12, 2015 | Class 1 not pathogenic based on frequency >1% in an outbred sampleset. Frequency 0.07343 (Asian), 0.311 (African), 0.2018 (European), derived from 1000 genomes (2012-04-30). - |
not provided Benign:1
Benign, criteria provided, single submitter | clinical testing | GeneDx | Jun 23, 2018 | - - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at