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 uncertain. Select a step to read what it means.
Uncertain.The recorded classification is uncertain significance.
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.
No pathogenic criterion marked as applied in the recorded assessment.
Intronic variant at c.7977-15, outside the native acceptor splice site +/-1,2 positions. SpliceAI max delta score = 0.03 (<= 0.1), predicting no significant splicing impact. Meets ENIGMA BP4_Supporting criteria for intronic variants outside canonical splice sites with no predicted splicing effect.
Only BP4_Supporting is met (SpliceAI max delta 0.03, intronic variant outside +/-1,2 acceptor splice consensus predicts no splicing impact). Under ENIGMA Table 3 combining rules, a single Supporting_benign criterion does not reach the threshold for Likely Benign (requires either 2+ Supporting_benign, or 1 Strong_benign + 1 Supporting_benign, or 1 Moderate_benign + 1 Supporting_benign). Under the ENIGMA point system for conflicting evidence, BP4_Supporting = -1 falls in the VUS range (-1 to 5). No pathogenic criteria are met.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 2 / 1,604,172 alleles. Recorded AF 1.24675e-06. Recorded homozygote count 0.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
Recorded SpliceAI maximum delta score: 0.030. Refer to the recorded PP3/BP4 rationale for interpretation.
4 Likely benign · 2 Uncertain significance · 1 Likely Benign. ClinVar API review status: criteria provided, multiple submitters, no conflicts.
No standalone functional evidence summary is recorded in evidence_summary.functional.
This variant has not previously been reported in somatic cancers (COSMIC).
ACMG/AMP criteria under ClinGen BRCA2 VCEP v1.2.0, with the data and sources behind each one.
29 criteria with recorded statuses: 1 met · 12 not met · 2 not assessed · 14 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000059.4:c.7977-15T>G is an intronic substitution located 15 bases upstream of BRCA2 exon 18, outside the canonical acceptor splice site consensus (+/-1,2). SpliceAI predicts no significant impact on splicing (max delta = 0.03), supporting a benign bioinformatic assessment under ENIGMA BP4_Supporting.
This variant is extremely rare in population databases, present in 2 of 1,604,172 alleles in gnomAD v4.1 (AF = 1.25e-06), both in the European non-Finnish population. It is absent from gnomAD v2.1. The FAF of 2.8e-07 does not meet ENIGMA BS1 thresholds for benign population evidence, nor does it meet BA1 stand-alone benign criteria.
In a multifactorial likelihood analysis by Parsons et al. 2019 (PMID:31131967), this variant had a combined likelihood ratio of 1.11 (co-occurrence LR = 1.02; family history LR = 1.08), which falls within the neutral zone and does not provide evidence for either pathogenicity (PP4) or benignity (BP5).
The variant has been reported in ClinVar as Likely benign by 4 clinical laboratories and as Uncertain significance by 2 laboratories (ClinVar ID: 96863), though no expert panel classification has been assigned.
The adjacent canonical splice acceptor variant c.7977-1G>C is a well-established pathogenic variant (Parsons et al. 2019 posterior probability = 0.999; IARC Class 5), but c.7977-15T>G does not disrupt the splice consensus and is predicted to be splicing-neutral by SpliceAI.
Overall, only BP4_Supporting is met. Under the ENIGMA Table 3 combining rules, a single supporting benign criterion does not reach the threshold for Likely Benign (which requires either Strong_benign + Supporting_benign or >= 2 Supporting_benign). This variant is classified as a Variant of Uncertain Significance (VUS).
No criteria match.
No further detail was recorded.
Every interpreted variant in BRCA2, mapped onto the exon structure of NM_000059.4. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| European (non-Finnish)2 / 1,171,990 | 1.7e-06 |
This variant is present in gnomAD v4.1 (AF= 1.24675e-06; MAF= 0.00012%, 2/1604172 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 1.7065e-06; MAF= 0.00017%, 2/1171990 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.03).
7 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= 1.24675e-06; MAF= 0.00012%, 2/1604172 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 1.7065e-06; MAF= 0.00017%, 2/1171990 alleles, homozygotes = 0); grpmax FAF= 2.8e-07.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Likely benign (4 clinical laboratories) and as Uncertain significance (2 clinical laboratories) and as Likely Benign (1 clinical laboratory). (ClinVarID = 96863)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.03).
This variant has not previously been reported in somatic cancers (COSMIC).