chr13-32357830-G-A
Variant summary
The NM_000059.4(BRCA2):c.7706G>A (p.Gly2569Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a cumulative frequency of 0.000000684 (AC=1) in the gnomAD database across 1,461,624 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.0000655. Note: a gnomAD entry for this variant shows a statistical allele-bias signature, consistent with mosaic/somatic contamination (e.g. age-related clonal hematopoiesis) rather than true inherited population frequency — this frequency should not be read as evidence of a common, benign germline variant. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain Significance (no review stars). Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.G2569A: Uncertain_significance (ClinVar VariationId 4802345, 1 star); p.G2569C: Uncertain_significance (ClinVar VariationId 1760231, 1 star); p.G2569S: Uncertain_significance (ClinVar VariationId 441356, 1 star) This exact variant is curated in the UniProt human variants database as Uncertain Significance; it is also listed as a COSMIC curated somatic variant.
Frequency
Consequence
NM_000059.4 missense
Scores
Clinical Significance
Conservation
Publications
- BRCA2-related cancer predispositionInheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
- breast-ovarian cancer, familial, susceptibility to, 2Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
- Fanconi anemia complementation group D1Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics
- pancreatic cancer, susceptibility to, 2Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- sarcomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- hereditary breast ovarian cancer syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- Fanconi anemiaInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- medulloblastomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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Classification according to ACMG Germline Pathogenicity v2019
Our verdict: Uncertain_significance. The variant received 1 points.
| Apply | Criterion Code & Title / Strength | Rationale / Clinical Context | |
|---|---|---|---|
| PM2Absent/extremely low in population databases | Rare in gnomAD for AD/XL gene (popmax AF below threshold) — PM2 Supporting; GnomAD popmax AF = 0.0000655 — borderline rare for AD+AR gene (base 0.0001, raised to 0.000139 by highest known P/LP ClinVar AF 0.000139) — PM2 supporting. |
Variant Effect in Transcripts
Automated classification analysis was done for transcript: NM_000059.4. You can select a different transcript below to see updated classification assignments.
RefSeq Transcripts
| Sel. | Gene / Transcript | Tags | HGVSc / HGVSp | Effect | Exon rank | Protein / UniProt |
|---|---|---|---|---|---|---|
BRCA2 | MANE Select | c.7706G>A p.Gly2569Asp | missense | Exon 16 of 27 | Prot: NP_000050.3 UniProt: | |
BRCA2 | c.7706G>A p.Gly2569Asp | missense | Exon 16 of 27 | Prot: NP_001419006.1 UniProt: | ||
BRCA2 | c.7706G>A p.Gly2569Asp | missense | Exon 16 of 27 | Prot: NP_001393649.1 UniProt: |
Ensembl Transcripts
| Sel. | Gene / Transcript | Tags | HGVSc / HGVSp | Effect | Exon rank | Protein / UniProt |
|---|---|---|---|---|---|---|
BRCA2 | TSL:5MANE Select | c.7706G>A p.Gly2569Asp | missense | Exon 16 of 27 | Prot: ENSP00000369497.3 UniProt: | |
BRCA2 | TSL:1 | c.7706G>A p.Gly2569Asp | missense | Exon 16 of 27 | Prot: ENSP00000439902.1 UniProt: | |
BRCA2 | TSL:1 | c.7337G>A p.Gly2446Asp | missense | Exon 16 of 27 | Prot: ENSP00000499438.2 UniProt: |
Frequencies
Allele frequencies (AF), counts (AC/AN), homozygotes and coverage
| Source / population | AF | AC | Hom | AN | Coverage |
|---|---|---|---|---|---|
Global population databases 6 sources | |||||
GnomAD3 genomes | AF: 0.00000657 | AC:1 | Hom:0 | AN:152148 | Cov:32 |
GnomAD2 exomes | AF: 0.00000398 | AC:1 | AN:251340 | ||
GnomAD4 exome | AF: 6.84e-7 | AC:1 | Hom:0 | AN:1461624 | Cov:31 |
GnomAD4 genome | AF: 0.00000657 | AC:1 | Hom:0 | AN:152148 | Cov:32 |
TOPMed (Bravo) | AF: 0.00000756 | ||||
ALFA (dbGaP/dbSNP Allele Frequency Aggregator) | AF: 0.00 | AC:0 | Hom:0 | AN:36930 | |
Local & regional cohorts 1 source | |||||
Korea4K (4,157 Koreans) | AF: 0.000276 | AC:2 | AN:7232 | ||
ClinVar
Computational Scores
| Algorithm | Calibrated pred. | Score | Prediction |
|---|---|---|---|
AlphaGenome AVI | Pathogenic | 21 | |
AlphaMissense | Benign | 0.18 | |
BayesDel_addAF | Uncertain | 0.072 | D |
BayesDel_noAF | Uncertain | 0.030 | |
CADD | Uncertain | 24 | |
DANN | Uncertain | 1.0 | |
Eigen | Uncertain | 0.58 | |
Eigen_PC | Uncertain | 0.58 | |
FATHMM_MKL | Uncertain | 0.90 | D |
FuncVEP CTI | Benign | 0.084 | |
GPN-Star LLR | N/A | -3.1 | |
GPN-Star score | N/A | 3.1 | |
M_CAP | Uncertain | 0.16 | D |
MetaRNN | Uncertain | 0.67 | D |
MetaSVM | Uncertain | 0.062 | D |
Mutation Taster | N/A | 93/7 | polymorphism |
PhyloP100 | Uncertain | 4.6 | |
PrimateAI | Benign | 0.34 | T |
PROVEAN | Benign | -1.8 | N |
REVEL | Uncertain | 0.50 | |
Sift | Uncertain | 0.013 | D |
Sift4G | Uncertain | 0.047 | D |
VESM-3B | Benign | -6.7 |
Splicing Scores
| Algorithm | Calibrated pred. | Score | Prediction |
|---|---|---|---|
Pangolin (max) | Benign | 0.0 | |
SpliceAI score (max) | Benign | 0.020 | Details are displayed if max score is > 0.2 |
Find out detailed SpliceAI scores and Pangolin per-transcript scores at
MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.
MaveDB functional evidence
- Gene
- BRCA2
- Score
- 0.243