2-47412523-A-G
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM1BP6
The NM_000251.3(MSH2):āc.755A>Gā(p.Gln252Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000744 in 1,611,840 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q252H) has been classified as Likely benign.
Frequency
Consequence
NM_000251.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MSH2 | NM_000251.3 | c.755A>G | p.Gln252Arg | missense_variant | 4/16 | ENST00000233146.7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MSH2 | ENST00000233146.7 | c.755A>G | p.Gln252Arg | missense_variant | 4/16 | 1 | NM_000251.3 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152160Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251402Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135876
GnomAD4 exome AF: 0.00000754 AC: 11AN: 1459680Hom.: 0 Cov.: 29 AF XY: 0.0000110 AC XY: 8AN XY: 726274
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152160Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74352
ClinVar
Submissions by phenotype
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
Uncertain significance, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Nov 02, 2023 | This missense variant replaces glutamine with arginine at codon 252 of the MSH2 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). This variant does not impact MSH2 function in a 6-thioguanine sensitivity assay in haploid human cells (internally defined LOF score threshold <= -1.32, PMID: 33357406). This variant has been reported in an individual affected with breast cancer (PMID: 25186627). This variant has been identified in 1/251402 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
Likely benign, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 11, 2022 | This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. - |
Uncertain significance, criteria provided, single submitter | curation | Sema4, Sema4 | Apr 30, 2021 | - - |
Lynch syndrome 1 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Sep 23, 2023 | - - |
Lynch syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Feb 05, 2024 | This missense variant replaces glutamine with arginine at codon 252 of the MSH2 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). This variant does not impact MSH2 function in a 6-thioguanine sensitivity assay in haploid human cells (internally defined LOF score threshold <= -1.32, PMID: 33357406). This variant has been reported in an individual affected with breast cancer (PMID: 25186627). This variant has been identified in 1/251402 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Nov 08, 2023 | Observed in an individual with breast cancer (PMID: 25186627); Published functional studies suggest a neutral effect: demonstrates sensitivity to 6-TG and mismatch repair (MMR) function similar to wild-type (PMID: 33357406); In silico analysis supports that this missense variant does not alter protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 25186627, 33357406, 18822302, 21120944) - |
Hereditary nonpolyposis colorectal neoplasms Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 27, 2024 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at