About BRCA2
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. This variant is pathogenic. Select a step to read what it means.
Pathogenic.A pathogenic classification under the recorded framework.
Gene-level background from the recorded interpretation.
Words with a dotted underline have a short definition. Hover or tap them.No gene-level summary was recorded for this case.
The recorded framework is ClinGen BRCA2 VCEP v1.2.0. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.
The applied criteria and their strengths are shown as assessed under the stated framework.
This variant shows strong segregation with disease. The quantitative segregation likelihood ratio is 605.14, which is above the ENIGMA PP1_Very Strong threshold of 350.
Computational evidence supports a splice-altering effect. SpliceAI predicts a strong splice impact with a maximum delta score of 0.99, which is above the ENIGMA PP3 threshold of 0.2 for predicted splicing impact.
Clinical-history evidence is in the pathogenic direction. The family-history likelihood ratio is 2.88, which is above the ENIGMA PP4 threshold of 2.08 and below the moderate threshold of 4.3, supporting PP4 at supporting strength.
Expert panel ClinGen ENIGMA BRCA1 and BRCA2 Variant Curation Expert Panel, ClinGen classified as Pathogenic.
No benign criterion marked as applied in the recorded assessment.
ENIGMA BRCA1 and BRCA2 Specification v1.2 Table 3 final-classification framework (CSPEC/VCEP override)
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 1 / 1,614,050 alleles. Recorded AF 6.19559e-07. Recorded homozygote count 0.
This variant is present in gnomAD v2.1 (AF= 3.98286e-06; MAF= 0.00040%, 1/251076 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 5.43833e-05; MAF= 0.00544%, 1/18388 alleles, homozygotes = 0).
Recorded SpliceAI maximum delta score: 0.990. Refer to the recorded PP3/BP4 rationale for interpretation.
14 Pathogenic · 3 Likely pathogenic.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Likely Loss-of-function; curated oncogenicity label: Likely Oncogenic.
This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen BRCA2 VCEP v1.2.0, with the data and sources behind each one.
28 criteria with recorded statuses: 4 met · 11 not met · 4 not assessed · 9 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
The BRCA2 c.8023A>G (p.Ile2675Val) variant has not been observed in somatic cancers in COSMIC and has been reported in ClinVar as Pathogenic by the ClinGen ENIGMA BRCA1/2 expert panel.
This variant is present at very low frequency in population databases, with 1/251076 alleles in gnomAD v2.1 and 1/1614050 alleles in gnomAD v4.1, with no homozygotes reported.
In published splice studies summarized in the ENIGMA-aligned BRCA resource, this variant generated a strong donor site within exon 18 and was associated with a predominant exon 18-deleted transcript; the multifactorial dataset also shows a segregation likelihood ratio of 605.14 and an overall posterior probability of pathogenicity of 0.999651.
Computational evidence supports splice disruption, with SpliceAI 0.99 exceeding the BRCA2 ENIGMA PP3 threshold of 0.2; REVEL is high at 0.88, while BayesDel is 0.086 and does not support a benign BP4 call because SpliceAI is above the BP4 threshold of 0.1.
No criteria match.
ENIGMA BRCA2 PP1_Very Strong applies when segregation LR is ≥350:1.
ENIGMA BRCA2 PP3_Supporting applies for predicted splicing impact when SpliceAI is ≥0.2.
ENIGMA BRCA2 PP4_Supporting applies for multifactorial clinical data LR ≥2.08 and <4.3.
ENIGMA BRCA2 PVS1/PVS1(RNA) requires an established loss-of-function transcript consequence at an appropriate weight.
ENIGMA BRCA2 PS1 requires a previously classified variant with the same relevant protein or splicing consequence.
ENIGMA BRCA2 PS3 is reserved for well-established functional studies measuring damaging effect via protein or combined mRNA+protein.
ENIGMA BRCA2 PM2_Supporting requires absence from gnomAD controls with adequate coverage.
ENIGMA BRCA2 BA1 requires FAF >0.001.
ENIGMA BRCA2 BS3 requires well-established functional studies showing no damaging effect.
ENIGMA BRCA2 BS4 requires quantitative non-segregation evidence, with supporting benign weight at LR ≤0.48.
ENIGMA BRCA2 BP1 requires a missense or silent variant without predicted splicing impact, with SpliceAI ≤0.1.
ENIGMA BRCA2 BP4 requires no predicted protein or splicing impact, including SpliceAI ≤0.1.
ENIGMA BRCA2 BP5 applies only when multifactorial clinical data produce LR ≤0.48 against pathogenicity.
ENIGMA BRCA2 BP7 is reserved for eligible synonymous or intronic variants, or RNA data showing no damaging splicing effect in the appropriate context.
ENIGMA BRCA2 PS4 requires significant case enrichment with p-value ≤0.05 and OR ≥4, with lower confidence interval excluding 2.0.
ENIGMA BRCA2 PM3 applies only in the Fanconi anemia context with qualifying co-occurrence evidence.
ENIGMA BRCA2 BS1 depends on non-founder filter allele frequency thresholds.
ENIGMA BRCA2 BS2 is point-based and depends on absence of Fanconi anemia features.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
ENIGMA BRCA2 PM5 is used for PTC/truncating logic, not classic same-residue missense logic.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
Not applicable in BRCA2 ENIGMA specifications.
Every interpreted variant in BRCA2, mapped onto the exon structure of NM_000059.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| East Asian1 / 44,876 | 2.2e-05 |
| East Asian1 / 18,388 | 5.4e-05 |
This variant is present in gnomAD v4.1 (AF= 6.19559e-07; MAF= 0.00006%, 1/1614050 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 2.22836e-05; MAF= 0.00223%, 1/44876 alleles, homozygotes = 0).
This variant is present in gnomAD v2.1 (AF= 3.98286e-06; MAF= 0.00040%, 1/251076 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 5.43833e-05; MAF= 0.00544%, 1/18388 alleles, homozygotes = 0).
ENIGMA BRCA2 PP3_Supporting applies for predicted splicing impact when SpliceAI is ≥0.2.
ENIGMA BRCA2 BP4 requires no predicted protein or splicing impact, including SpliceAI ≤0.1.
ENIGMA BRCA2 BP7 is reserved for eligible synonymous or intronic variants, or RNA data showing no damaging splicing effect in the appropriate context.
SpliceAI predicts possible splice impact for this variant (max delta score = 0.99). REVEL score = 0.88. BayesDel score = 0.0862004.
9 paper records listed. No publication is explicitly linked to an applied criterion in the recorded metadata. None of the listed paper records explicitly indicates that the variant is named.
Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.
The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.
This variant is present in gnomAD v4.1 (AF= 6.19559e-07; MAF= 0.00006%, 1/1614050 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 2.22836e-05; MAF= 0.00223%, 1/44876 alleles, homozygotes = 0).
This variant is present in gnomAD v2.1 (AF= 3.98286e-06; MAF= 0.00040%, 1/251076 alleles, homozygotes = 0) and has highest observed frequency in the East Asian population (AF= 5.43833e-05; MAF= 0.00544%, 1/18388 alleles, homozygotes = 0).
This variant has been reported in ClinVar as Pathogenic (14 clinical laboratories) and as Likely pathogenic (3 clinical laboratories) and as Pathogenic by ClinGen ENIGMA BRCA1 and BRCA2 Variant Curation Expert Panel, ClinGen (expert panel). (ClinVarID = 52475)
SpliceAI predicts possible splice impact for this variant (max delta score = 0.99). REVEL score = 0.88. BayesDel score = 0.0862004.
OncoKB identified variant-specific curated literature and context relevant to functional review; biological-effect context: Likely Loss-of-function; curated oncogenicity label: Likely Oncogenic.
This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).
This variant does not lie in a statistically significant hotspot.