Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000251.3(MSH2):c.1764T>G(p.Tyr588*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★★). Synonymous variant affecting the same amino acid position (i.e. Y588Y) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.
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]
MSH2 Gene-Disease associations (from GenCC):
Lynch syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, ClinGen, Orphanet
Lynch syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
Muir-Torre syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, G2P
mismatch repair cancer syndrome 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Our verdict: Pathogenic. The variant received 18 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 2-47475029-T-G is Pathogenic according to our data. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47475029-T-G is described in CliVar as Pathogenic. Clinvar id is 90780.Status of the report is reviewed_by_expert_panel, 3 stars.
The p.Y588* pathogenic mutation (also known as c.1764T>G), located in coding exon 12 of the MSH2 gene, results from a T to G substitution at nucleotide position 1764. This changes the amino acid from a tyrosine to a stop codon within coding exon 12. This mutation was detected in a patient with ovarian cancer at age 41, urinary bladder cancer at age 53 and six synchronous colon cancers at age 55. One of the colon tumors demonstrated high microsatellite instability and loss of MSH2 protein by immunohistochemistry (Krüger S et al. Hum Mutat, 2003 Apr;21:445-6). In a study of 1721 German probands suspected of HNPCC, this mutation was detected in one family (Mangold E et al. Int J Cancer, 2005 Sep;116:692-702). In addition to the clinical data presented in the literature, This alteration is expected to result in loss of function by premature protein truncation or nonsense-mediated mRNA decay. As such, this alteration is interpreted as a disease-causing mutation. -