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Classification rationale
1

BRCA1 c.1534C>T (p.Leu512Phe, p.L512F) has been shown in a calibrated functional assay to have protein function similar to benign control variants, supporting BS3_Strong.

2

Multifactorial likelihood analysis yielded a combined LR for causality of 0.007006151007218386, which is below the ENIGMA BP5_Strong threshold of 0.05 and supports strong evidence against pathogenicity.

3

The gnomAD v2.1 non-founder grpmax FAF is 8.82e-05, which is within the BS1_Supporting range of >2e-05 to <=1e-04, and the missense change lies outside the BRCA1 clinically important domains with SpliceAI 0.00, supporting BS1_Supporting and BP1_Strong benign evidence.

gnomad_v2 ↗
4

Using the retrieved generic ACMG/AMP combination rules as fallback final-classification framework, the presence of at least two Strong benign criteria supports classification of this variant as Benign.

Applied criteria
Met
Not met
Not assessed
N/A
Very strong
Strong
Moderate
Supporting
Pathogenic evidence
PVS
PVS1
PS
PS1
PS2
PS3
PS4
PM
PM1
PM2
PM3
PM4
PM5
PM6
PP
PP1
PP2
PP3
PP4
PP5
Benign evidence
BA
BA1
BS
BS1
BS2
BS3
BS4
BP
BP1
BP2
BP3
BP4
BP5
BP6
BP7
PVS1
Rationale
Select a criterion to inspect its explanation.
Evidence used
Gaps remaining
Rule
Publications
Research and evidence
gnomAD v2.1 evidence
v2.1
gnomAD v4.1 evidence
v4.1
01
Population
gnomAD v2.1This variant is present in gnomAD v2.1 (AF= 3.54321e-05; MAF= 0.00354%, 10/282230 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 7.76627e-05; MAF= 0.00777%, 10/128762 alleles, homozygotes = 0); grpmax FAF= 8.82e-05.
gnomAD v4.1This variant is present in gnomAD v4.1 (AF= 0.000117733; MAF= 0.01177%, 190/1613824 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 0.000192092; MAF= 0.01921%, 12/62470 alleles, homozygotes = 0); grpmax FAF= 0.00013243.
ClinVar evidence
02
ClinVar
This variant is absent from ClinVar.
Functional evidence
03
Functional
OncoKB has not reviewed this specific variant; no variant-level oncogenicity or biological effect is available. Gene-level context: BRCA1, a tumor suppressor involved in the DNA damage response, is mutated in various cancer types.
In silico evidence
04
In silico
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00).
COSMIC evidence
05
COSMIC
This variant has previously been reported in somatic cancers (COSMIC; COSV58794737, n = 4 times).
Cancer hotspots evidence
06
Cancer hotspots
No cancer hotspot summary recorded.