rs80359090
Variant summary
Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP6
The NM_000059.4(BRCA2):āc.8432A>Gā(p.Asp2811Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,613,870 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_000059.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -1 ACMG points.
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
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BRCA2 | ENST00000380152.8 | c.8432A>G | p.Asp2811Gly | missense_variant | Exon 19 of 27 | 5 | NM_000059.4 | ENSP00000369497.3 | ||
BRCA2 | ENST00000530893.7 | c.8063A>G | p.Asp2688Gly | missense_variant | Exon 19 of 27 | 1 | ENSP00000499438.2 | |||
BRCA2 | ENST00000614259.2 | n.*490A>G | non_coding_transcript_exon_variant | Exon 18 of 26 | 2 | ENSP00000506251.1 | ||||
BRCA2 | ENST00000614259 | n.*490A>G | 3_prime_UTR_variant | Exon 18 of 25 | 2 | ENSP00000506251.1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152180Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251384Hom.: 0 AF XY: 0.00000736 AC XY: 1AN XY: 135874
GnomAD4 exome AF: 0.0000103 AC: 15AN: 1461690Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9AN XY: 727166
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152180Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74340
ClinVar
Submissions by phenotype
not specified Uncertain:2
Variant summary: BRCA2 c.8432A>G (p.Asp2811Gly) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 8e-06 in 251384 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.8432A>G has been reported in the literature in an individual affected with early onset breast cancer (Malone_2000). This report does not provide unequivocal conclusions about association of the variant with Hereditary Breast And Ovarian Cancer Syndrome. Several publications have used a variety of in silico modelling tools to predict the impact of the variant on protein function and have classified it as having a neutral or likely benign effect (e.g. Karchin_2008, Padilla_2019, Cline_2019). For example, a recent report from the CAGI5 (fifth Critical Assessment of Genome Interpretation) Challenge has classified this variant as likely benign in a prediction protocol that includes assessment of the impact of this variant on splicing and protein function using four sets of predictors (Padilla_2019). This classification was also supported by consensus from six prediction teams in a second publication, also as part of the CAGI5 ENIGMA Challenge (Cline_2019). Five clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Two laboratories classified the variant as likely benign and three as VUS. . Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -
Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: Reported in 1 paper; ClinVar: 1 VUS -
not provided Uncertain:2
The BRCA2 c.8432A>G (p.Asp2811Gly) variant has been reported in the published literature in an individual with breast cancer (PMIDs: 10717622 (2000)). Multifactorial studies have suggested that this variant is likely to be neutral (PMIDs: 19043619 (2008), 31131967 (2019, and 31294896 (2019)). The frequency of this variant in the general population, 0.000008 (2/251384 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is damaging. Based on the available information, we are unable to determine the clinical significance of this variant. -
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Breast-ovarian cancer, familial, susceptibility to, 2 Uncertain:1Benign:1
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Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
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The p.D2811G variant (also known as c.8432A>G), located in coding exon 18 of the BRCA2 gene, results from an A to G substitution at nucleotide position 8432. The aspartic acid at codon 2811 is replaced by glycine, an amino acid with similar properties. This alteration was reported in a woman with breast cancer from a population based case-control study (Malone KE et al. Cancer 2000 Mar; 88(6):1393-402). Of note, this alteration is also known as 8660A>G in published literature. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
BRCA2-related disorder Uncertain:1
The BRCA2 c.8432A>G variant is predicted to result in the amino acid substitution p.Asp2811Gly. This variant was reported in an individual with breast cancer (Malone et al. 2000. PubMed ID: 10717622). This variant is reported in 0.0054% of alleles in individuals of East Asian descent in gnomAD, and has conflicting interpretations of pathogenicity in ClinVar ranging from likely benign to uncertain (https://www.ncbi.nlm.nih.gov/clinvar/variation/52585/). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -
Hereditary breast ovarian cancer syndrome Benign:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at