LYFE Sciences · Project HERA
Variant Interpretation · Classification Report
Variant classification summary
NM_000059.4:c.8432A>G
BRCA2
· NP_000050.3:p.(Asp2811Gly)
· NM_000059.4
GRCh37: chr13:32944639 A>G
·
GRCh38: chr13:32370502 A>G
Gene:
BRCA2
Transcript:
NM_000059.4
Final call
Likely Benign
BS1 supporting (benign)
BP5 supporting (benign)
Variant details
Gene
BRCA2
Transcript
NM_000059.4
Protein
NP_000050.3:p.(Asp2811Gly)
gnomAD AF
9.914057513926153e-06 (v4.1)
ClinVar
Uncertain significance
OncoKB
Unknown Oncogenic Effect
Classification rationale
Interpretation summary
Generated evidence synthesis
1
Likely Benign: BS1 (supporting benign) is met on a maximum non-founder filter allele frequency of 5.65e-05 in gnomAD v2.1 non-cancer exomes.
2
Likely Benign: BP5 (supporting benign) is met on an ENIGMA combined clinical likelihood ratio of 0.430.
Final determination:
Under ENIGMA BRCA2 VCEP Version 1.2 Table 3, two Supporting (Benign) criteria (BS1 plus BP5) combine to Likely Benign.
Criteria assessment
ACMG/AMP criteria review
Criteria shown when status is available
All criteria require review: For research and educational purposes only.
| Criterion | Status | Rationale | Evidence used |
|---|---|---|---|
| PVS1 | N/A | Not applicable: p.Asp2811Gly is a missense substitution, and ENIGMA PVS1 applies only to null variants; SpliceAI max delta 0.03 excludes a splice-null. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_specifications_table4_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_pmid_22505045_houdayer_2012_hummutat
spliceai
pvs1_variant_assessment
pvs1_gene_context
|
| PS1 | Not met | Not met: c.8432A>G p.Asp2811Gly is itself classified (Likely) Benign by ENIGMA (posterior 0.0131) and no pathogenic variant carries the same amino-acid change. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_supplementarytables_v1_2_2024_11_18
vcep_humu_40_1557_s001
clinvar
PMID:10717622
|
| PS2 | N/A | Not applicable: the ENIGMA BRCA2 VCEP explicitly prohibits PS2 because de novo occurrence predictive capacity is uncalibrated. |
cspec
vcep_specifications_v1_2_2024_11_18
clinvar
|
| PS3 | Not met | Not met: ENIGMA Table 9, the governing functional-assay table, has no entry for c.8432A>G (p.Asp2811Gly), and no published assay reports a damaging effect. |
vcep_specifications_table9_v1_2_2024_11_18
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
PMID:10717622
PMID:31131967
PMID:31112341
PMID:25741868
|
| PS4 | Not met | Not met: no variant-level case-control odds ratio exists for c.8432A>G to satisfy the ENIGMA PS4 requirement of OR >= 4 (p <= 0.05). |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
gnomad_v2
PMID:10717622
PMID:12692171
PMID:17392385
|
| PM1 | N/A | Not applicable: the ENIGMA BRCA2 v1.2 specification retires PM1 ('Do not use; considered as component of PP3/BP4'), though Asp2811 does lie in the BRCA2 DNA-binding domain (aa 2481-3186). |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_specifications_table4_v1_2_2024_11_18
|
| PM2 | Not met | Not met: the variant is present in controls (2/236,848 alleles, AF 8.44e-06 in gnomAD v2.1 non-cancer exomes), so the 'absent from controls' requirement fails. |
cspec
gnomad_v2
gnomad_v4
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
|
| PM3 | Not met | Not met: no Fanconi anemia proband and no BRCA2 P/LP variant in trans or homozygous, so the VCEP PM3 points scheme cannot be triggered. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_supplementarytables_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_pmid_31853058_brca2_clinical_history_lr
clinvar
PMID:31131967
|
| PM4 | N/A | Not applicable: p.Asp2811Gly changes one residue without altering protein length, and ENIGMA v1.2 lists PM4 as do-not-use. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
|
| PM5 | N/A | Not applicable: ENIGMA v1.2 retires classic missense PM5 and repurposes it to PM5_PTC for truncating variants only, and c.8432A>G is a missense change. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_specifications_table4_v1_2_2024_11_18
pm5_candidates
|
| PM6 | N/A | Not applicable: the ENIGMA BRCA2 VCEP explicitly prohibits PM6 because de novo occurrence predictive capacity is uncalibrated. |
cspec
vcep_specifications_v1_2_2024_11_18
clinvar
|
| PP1 | Not assessed | Not assessed: the ENIGMA tables carry no co-segregation LR for c.8432A>G, so the PP1 threshold of LR >=2.08 cannot be reached. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
clinvar
|
| PP2 | N/A | Not applicable: ENIGMA BRCA2 v1.2 retires PP2 ('Do not use - high frequency of benign missense variants'), so a BRCA2 missense variant cannot receive it. |
cspec
vcep_specifications_v1_2_2024_11_18
|
| PP3 | Not met | Not met: in-domain missense BayesDel no-AF 0.191743 is below the BRCA2 PP3 cutoff of 0.30 and SpliceAI 0.032 is below the 0.2 splice threshold. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
bayesdel
spliceai
revel
vcep_supplementarytables_v1_2_2024_11_18
vcep_humu_40_1557_s001
|
| PP4 | Not met | Not met: the ENIGMA combined clinical LR for this variant is 0.430, far below the 2.08 PP4 threshold and directed against pathogenicity. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
vcep_pmid_31853058_brca2_clinical_history_lr
PMID:31853058
PMID:17924331
PMID:31131967
|
| PP5 | Not met | Not met: ClinVar VCV000052585 has no expert-panel assertion (11 single-submitter laboratory submissions, 1-star, conflicting), so the PP5 requirement for an expert-panel pathogenic call is unmet. |
cspec
vcep_specifications_v1_2_2024_11_18
clinvar
|
| BA1 | Not met | Not met: maximum non-founder FAF 5.65e-05 (East Asian, gnomAD v2.1 non-cancer exomes) vs the >0.001 BA1 stand-alone threshold. |
cspec
gnomad_v2
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_supplementarytables_v1_2_2024_11_18
|
| BS1 | Met | Met at supporting strength: maximum non-founder FAF 5.65e-05 (East Asian) falls in the >0.00002 to <=0.0001 BS1_Supporting band but below the 0.0001 strong threshold. |
cspec
gnomad_v2
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_supplementarytables_v1_2_2024_11_18
vcep_humu_40_1557_s001
|
| BS2 | Not met | Not met: BS2 requires proband-level co-occurrent/homozygote points (Table 8) and none are present, with 0 gnomAD homozygotes observed. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
gnomad_v2
gnomad_v4
|
| BS3 | Not met | Not met: no calibrated functional assay reports wild-type-like function for this variant, and the governing ENIGMA Table 9 has no entry for c.8432A>G. |
vcep_specifications_table9_v1_2_2024_11_18
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
PMID:10717622
PMID:31131967
PMID:31112341
PMID:25741868
|
| BS4 | Not assessed | Not assessed: no co-segregation LR exists for c.8432A>G, so the BS4 threshold of LR <=0.48 is not evaluable. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
clinvar
|
| BP1 | Not met | Not met: BP1_Strong requires a missense variant outside a clinically important domain, but Asp2811 lies within the BRCA2 DNA-binding domain (aa 2481-3186). |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_specifications_table4_v1_2_2024_11_18
spliceai
|
| BP2 | N/A | Not applicable: ENIGMA BRCA2 v1.2 marks BP2 'Do not use - applied only in the context of BS2', and no cis/trans pathogenic variant is documented. |
cspec
vcep_specifications_v1_2_2024_11_18
clinvar
|
| BP3 | N/A | Not applicable: p.Asp2811Gly is a missense substitution, not an in-frame indel in a functionless repeat region, and ENIGMA v1.2 lists BP3 as do-not-use. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
|
| BP4 | Not met | Not met: BayesDel no-AF 0.191743 exceeds the BRCA2 BP4 cutoff of 0.18, so the required protein-impact component fails despite SpliceAI 0.032 <= 0.1. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
bayesdel
spliceai
revel
vcep_supplementarytables_v1_2_2024_11_18
vcep_humu_40_1557_s001
|
| BP5 | Met | Met at Supporting: the ENIGMA combined clinical LR for this variant is 0.430, which satisfies the BP5 threshold of <=0.48 and >0.23. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
vcep_humu_40_1557_s001
vcep_supplementarytables_v1_2_2024_11_18
vcep_pmid_31853058_brca2_clinical_history_lr
PMID:31131967
PMID:31853058
PMID:17924331
|
| BP6 | Not met | Not met: the ClinVar Likely benign calls for this variant come only from single-submitter laboratories (VCV000052585, no expert panel), which cannot trigger BP6. |
cspec
vcep_specifications_v1_2_2024_11_18
clinvar
|
| BP7 | N/A | Not applicable: BP7 applies only to synonymous variants with no predicted splice impact, and c.8432A>G is a missense (p.Asp2811Gly) substitution. |
cspec
vcep_specifications_v1_2_2024_11_18
vcep_appendices_v1_2_2024_11_18
|
Disclaimer:
The content and results provided by LYFE Sciences are for research and educational purposes only and must not be used as a substitute for professional medical judgment, diagnosis, or treatment. Always consult a qualified healthcare professional before making any clinical decisions.