rs1553366642
Positions:
Variant summary
Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate
The NM_000251.3(MSH2):c.1637dup(p.Asn547GlufsTer4) variant causes a frameshift change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. Q545Q) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
Frequency
Genomes: not found (cov: 33)
Consequence
MSH2
NM_000251.3 frameshift
NM_000251.3 frameshift
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: 8.48
Genes affected
MSH2 (HGNC:7325): (mutS homolog 2) This locus is frequently mutated in hereditary nonpolyposis colon cancer (HNPCC). When cloned, it was discovered to be a human homolog of the E. coli mismatch repair gene mutS, consistent with the characteristic alterations in microsatellite sequences (RER+ phenotype) found in HNPCC. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 12 ACMG points.
PVS1
?
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 2-47466782-G-GA is Pathogenic according to our data. Variant chr2-47466782-G-GA is described in ClinVar as [Pathogenic]. Clinvar id is 517418.Status of the report is criteria_provided_single_submitter, 1 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MSH2 | NM_000251.3 | c.1637dup | p.Asn547GlufsTer4 | frameshift_variant | 10/16 | ENST00000233146.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MSH2 | ENST00000233146.7 | c.1637dup | p.Asn547GlufsTer4 | frameshift_variant | 10/16 | 1 | NM_000251.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 32
GnomAD4 exome
Cov.:
32
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Lynch syndrome Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Jun 23, 2017 | The p.Asn547GlufsX4 (NM_000251.2 c.1637_1638insA) variant in MSH2 has not been p reviously reported in individuals with Lynch syndrome and was absent from large population studies. This variant is predicted to cause a frameshift, which alter s the protein?s amino acid sequence beginning at position 547 and leads to a pre mature termination codon 4 amino acids downstream. This alteration is then predi cted to lead to a truncated or absent protein. Heterozygous loss of function of the MSH2 gene is an established disease mechanism in individuals with Lynch synd rome. In summary, this variant meets criteria to be classified as pathogenic for Lynch syndrome in an autosomal dominant manner based upon the predicted impact to the protein. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DL_spliceai
Position offset: 26
Find out detailed SpliceAI scores and Pangolin per-transcript scores at