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LYFE SCIENCES
Project: HERA
NM_000251.3:c.802dup
p.Ser268PhefsTer16  ·  MSH2
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Classification rationale
1

The MSH2 c.802dup (p.(Ser268PhefsTer16)) variant has not been observed in somatic cancers in COSMIC and has been reported in ClinVar as pathogenic by 1 clinical laboratory.

cosmic ↗ clinvar ↗
2

This variant is absent from gnomAD v2.1 and gnomAD v4.1, which is below the MSH2 PM2 threshold of <0.00002 (<1 in 50,000 alleles).

gnomad_v2 ↗ gnomad_v4 ↗
3

The duplication causes a frameshift with a premature stop codon at p.(Ser268PhefsTer16), and this truncation is upstream of the MSH2 codon 891 cutoff for PVS1 Very Strong in the InSiGHT specification.

cspec ↗
4

SpliceAI predicts no significant splice impact with a maximum delta score of 0.06, indicating no additional splice effect is predicted beyond the truncating consequence of the duplication.

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
PP4
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Rationale
Select a criterion to inspect its explanation.
Evidence used
  • —
Gaps remaining
  • —
Rule
—
Publications
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Research and evidence
ClinVar evidence
02
ClinVar
This variant has been reported in ClinVar as Pathogenic (1 clinical laboratory).
ClinVar ↗
Functional evidence
03
Functional
OncoKB: Likely Oncogenic
OncoKB classifies this variant as Likely Oncogenic; biological effect: Likely Loss-of-function.
OncoKB ↗
In silico evidence
04
In silico
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.06).
SpliceAI ↗
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).
COSMIC ↗
Cancer hotspots evidence
06
Cancer hotspots Not found
This variant does not lie in a statistically significant hotspot.
ResidueS268
Hotspots ↗