About MSH2
No gene-level summary was recorded for this case.
No variant summary was recorded for this case.
Five-step scale from benign to pathogenic. Select a step to read what it means.
Not classified yet.Select a step to read what it means.
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 MSH2 VCEP v2.0.0. 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.
This variant is extremely rare in population databases. In gnomAD v4.1, the allele frequency is 8.67e-06 (14/1,613,934 alleles, no homozygotes) with a grpmax filtering allele frequency of 5.42e-06, which is below the InSiGHT MSH2 VCEP PM2_Supporting threshold of <0.00002 (<1 in 50,000 alleles). Absent from gnomAD v2.1 and gnomAD-Canada.
Multiple lines of computational evidence suggest no impact on the gene product. The HCI prior probability for pathogenicity is 0.0006, well below the InSiGHT MSH2 VCEP BP4_Supporting threshold of <0.11. SpliceAI predicts no splicing impact (max delta = 0.03, <=0.1). REVEL score is 0.276 (neutral range), and BayesDel score is -0.242779 (benign prediction).
Richards et.al., 2015 - Combining rules v2.0.0 criteria-combination framework: matched Rule31 (Benign.Supporting >=1 + Pathogenic.Supporting >=1) with applied criteria: PM2 supporting, BP4 supporting benign; maps to Uncertain Significance - Conflicting Evidence.
Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.
gnomAD v4.1: 14 / 1,613,934 alleles. Recorded AF 8.67446e-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.
3 Uncertain significance · 1 Benign.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. MSH2, a DNA mismatch repair protein, is frequently mutated in colorectal, small bowel, and endometrial cancers.
This variant has previously been reported in somatic cancers (COSMIC; COSV105858650, n = 1 times).
This variant does not lie in a statistically significant hotspot.
ACMG/AMP criteria under ClinGen MSH2 VCEP v2.0.0, with the data and sources behind each one.
29 criteria with recorded statuses: 2 met · 3 not met · 9 not assessed · 15 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.
NM_000251.3:c.1619G>C (p.Ser540Thr) is a missense variant in MSH2 exon 10. It is extremely rare in population databases (gnomAD v4.1 AF = 8.67e-06, 14/1,613,934 alleles), meeting PM2_Supporting under the InSiGHT MSH2 VCEP v2.0.0 threshold of <0.00002.
Multiple lines of computational evidence (HCI prior = 0.0006, SpliceAI max delta = 0.03, REVEL = 0.276, BayesDel = -0.242779) predict a neutral effect, meeting BP4_Supporting under the InSiGHT MSH2 VCEP v2.0.0 threshold of HCI prior < 0.11.
Functional data from a calibrated massively parallel assay (PMID:33357406) exists for MSH2 missense variants but the variant-specific LoF score for p.Ser540T could not be verified from the available full text; PS3/BS3 remain not assessed pending supplementary data review.
ClinVar reports this variant as Uncertain Significance (3 clinical laboratories) and Benign (1 clinical laboratory), with no expert panel review. PP5 is not applicable under this VCEP.
This variant has been observed in COSMIC (n=1 somatic occurrence) but does not lie in a statistically significant mutational hotspot.
No criteria match.
Every interpreted variant in MSH2, mapped onto the exon structure of NM_000251.3. Select a row to find it on the plot.
| Protein | Location | Classification | Link |
|---|
| Remaining individuals2 / 62,494 | 3.2e-05 |
| European (non-Finnish)12 / 1,179,880 | 1e-05 |
This variant is present in gnomAD v4.1 (AF= 8.67446e-06; MAF= 0.00087%, 14/1613934 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 3.20031e-05; MAF= 0.00320%, 2/62494 alleles, homozygotes = 0); grpmax FAF= 5.42e-06.
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). REVEL score = 0.276. BayesDel score = -0.242779. HCI prior probability for pathogenicity = 0.0006. MAPP score = 2.19. Custom PP2 score = 0.003.
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= 8.67446e-06; MAF= 0.00087%, 14/1613934 alleles, homozygotes = 0) and has highest observed frequency in the Remaining individuals population (AF= 3.20031e-05; MAF= 0.00320%, 2/62494 alleles, homozygotes = 0); grpmax FAF= 5.42e-06.
Absent from gnomAD v2.1.
Absent from gnomAD-Canada v1.0.
This variant has been reported in ClinVar as Uncertain significance (3 clinical laboratories) and as Benign (1 clinical laboratory). (ClinVarID = 487021)
SpliceAI predicts no significant splice impact for this variant (max delta score = 0.03). REVEL score = 0.276. BayesDel score = -0.242779. HCI prior probability for pathogenicity = 0.0006. MAPP score = 2.19. Custom PP2 score = 0.003.
OncoKB did not identify variant-specific reviewed functional evidence for this variant; gene-level curated context is available for reviewer follow-up. MSH2, a DNA mismatch repair protein, is frequently mutated in colorectal, small bowel, and endometrial cancers.
This variant does not lie in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV105858650, n = 1 times).
This variant does not lie in a statistically significant hotspot.