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Classification rationale
1

The BRAF c.483G>C (p.Leu161=) variant has not been identified as a statistically significant hotspot in Cancer Hotspots and has been reported in ClinVar as benign/likely benign, including a likely benign expert-panel classification.

hotspots ↗ clinvar ↗
2

This variant is present in gnomAD, with grpmax filtering allele frequency 0.03792% in v2.1 and 0.04133% in v4.1, which is above the BRAF VCEP BS1 threshold of 0.025% but below the BA1 threshold of 0.05%.

gnomad_v2 ↗ gnomad_v4 ↗ cspec ↗
3

In silico splice prediction does not support a deleterious effect, with SpliceAI showing a maximum delta score of 0.02 for this synonymous change.

spliceai ↗
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= 5.65731e-05; MAF= 0.00566%, 16/282820 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.000600769; MAF= 0.06008%, 15/24968 alleles, homozygotes = 0); grpmax FAF= 0.00037921.
gnomAD v4.1This variant is present in gnomAD v4.1 (AF= 2.97376e-05; MAF= 0.00297%, 48/1614116 alleles, homozygotes = 0) and has highest observed frequency in the African/African American population (AF= 0.00054655; MAF= 0.05466%, 41/75016 alleles, homozygotes = 0); grpmax FAF= 0.00041326.
ClinVar evidence
02
ClinVar
This variant has been reported in ClinVar as Likely benign (4 clinical laboratories) and as Benign (2 clinical laboratories) and as Likely benign by ClinGen RASopathy Variant Curation Expert Panel (expert panel).
Functional evidence
03
Functional
OncoKB: Unknown Oncogenic Effect
OncoKB identified curated literature and non-variant-specific oncogenicity context for review; listed oncogenicity label: Unknown Oncogenic Effect.
In silico evidence
04
In silico
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.02).
COSMIC evidence
05
COSMIC
This variant does not lie in a statistically significant hotspot. This variant has not previously been reported in somatic cancers (COSMIC).
Cancer hotspots evidence
06
Cancer hotspots Not found
This variant does not lie in a statistically significant hotspot.
ResidueL161