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.
Nonsense variant NM_000059.3:c.3881T>G (p.Leu1294Ter) in BRCA2 exon 11 introduces a premature termination codon predicted to truncate the protein at residue 1294 of 3418, removing the C-terminal DNA-binding domain (aa 2481-3186) and nuclear localization signals. Loss of function is the established disease mechanism for BRCA2. Per ENIGMA Specifications Table 4, BRCA2 exon 11 PTC variants are assigned PVS1 (Very Strong). No predicted or observed rescue via alternative splicing (SpliceAI max delta = 0.00).
Variant is absent from gnomAD v2.1 (exome), gnomAD v4.1, and gnomAD-Canada v1.0. Per ENIGMA PM2 rule, absence from controls in outbred populations supports PM2_Supporting. gnomAD v2.1/v4.1 returned null allele counts consistent with absence from the database. gnomAD-Canada confirms zero allele observations.
Per ENIGMA Specifications Table 4, BRCA2 exon 11 PTC variants are assigned PM5_Strong (PTC). Exon 11 is not among the PM5_N/A exons (E12, E27, E6), and numerous proven pathogenic PTC variants have been reported in this exon. This provides additional weight beyond PVS1 for the protein termination codon.
Expert panel Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) classified as Pathogenic.
No benign criterion marked as applied in the recorded assessment.
ENIGMA BRCA1/BRCA2 Specification v1.2.0 Table 3 combining rules applied to adjudicated criteria. PVS1 (Very Strong) + PM5_Strong exceeds the Pathogenic threshold (1 Very Strong + 1 Strong). Additionally, PVS1 + PM2_Supporting + PP5_Supporting independently satisfies 1 Very Strong + 2 Supporting → Pathogenic. No benign criteria met; no conflicting evidence.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1 allele counts were not recorded for this variant.
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.000. Refer to the recorded PP3/BP4 rationale for interpretation.
7 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.
27 criteria with recorded statuses: 4 met · 3 not met · 8 not assessed · 12 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000059.3:c.3881T>G (p.Leu1294Ter) is a nonsense variant in BRCA2 exon 11 that introduces a premature termination codon at residue 1294 of 3418, predicted to result in loss of the C-terminal DNA-binding domain and nuclear localization signals.
PVS1 (Very Strong) is met per ENIGMA Specifications Table 4, which assigns PVS1 to BRCA2 exon 11 PTC variants. Loss of function is the established disease mechanism for BRCA2.
PM5_Strong (PTC) is met per ENIGMA Table 4, which assigns PM5_Strong (PTC) for BRCA2 exon 11 termination codon variants. Exon 11 harbors numerous proven pathogenic PTC variants.
PM2_Supporting is met: the variant is absent from gnomAD v2.1, v4.1, and gnomAD-Canada v1.0, consistent with a rare pathogenic variant in outbred populations.
The variant has been classified as Pathogenic by the ENIGMA expert panel and 7 clinical laboratories in ClinVar (VariationID: 266780).
Under ENIGMA Table 3 combining rules, PVS1 (Very Strong) + PM5_Strong + PM2_Supporting meets the criteria for Pathogenic classification (1 Very Strong + 1 Strong fulfills the Pathogenic threshold).
No criteria match.
No further detail was recorded.
No further detail was recorded.
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 |
|---|
Absent from gnomAD-Canada v1.0.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). BayesDel score = 0.0577565.
8 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.
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Pathogenic (7 clinical laboratories) and as Pathogenic by Evidence-based Network for the Interpretation of Germline Mutant Alleles (ENIGMA) (expert panel). (ClinVarID = 266780)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). BayesDel score = 0.0577565.
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.