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NM_000251.3(MSH2):c.726C>G (p.Asn242Lys) AND Hereditary cancer-predisposing syndrome

Germline classification:
Conflicting interpretations of pathogenicity (2 submissions)
Last evaluated:
Feb 4, 2022
Review status:
criteria provided, conflicting classifications
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV000775712.7

Allele description [Variation Report for NM_000251.3(MSH2):c.726C>G (p.Asn242Lys)]

NM_000251.3(MSH2):c.726C>G (p.Asn242Lys)

Gene:
MSH2:mutS homolog 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
2p21
Genomic location:
Preferred name:
NM_000251.3(MSH2):c.726C>G (p.Asn242Lys)
HGVS:
  • NC_000002.12:g.47412494C>G
  • NG_007110.2:g.14371C>G
  • NM_000251.3:c.726C>GMANE SELECT
  • NM_001258281.1:c.528C>G
  • NP_000242.1:p.Asn242Lys
  • NP_000242.1:p.Asn242Lys
  • NP_001245210.1:p.Asn176Lys
  • LRG_218t1:c.726C>G
  • LRG_218:g.14371C>G
  • LRG_218p1:p.Asn242Lys
  • NC_000002.11:g.47639633C>G
  • NM_000251.1:c.726C>G
  • NM_000251.2:c.726C>G
Protein change:
N176K
Links:
dbSNP: rs748427458
NCBI 1000 Genomes Browser:
rs748427458
Molecular consequence:
  • NM_000251.3:c.726C>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001258281.1:c.528C>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Hereditary cancer-predisposing syndrome
Synonyms:
Neoplastic Syndromes, Hereditary; Tumor predisposition; Cancer predisposition; See all synonyms [MedGen]
Identifiers:
MONDO: MONDO:0015356; MeSH: D009386; MedGen: C0027672

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV000910129Color Diagnostics, LLC DBA Color Health
criteria provided, single submitter

(ACMG Guidelines, 2015)		Uncertain significance
(Sep 3, 2019) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

SCV002671500Ambry Genetics
criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)		Likely benign
(Feb 4, 2022) 		germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Citation Link

Help

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]
PMID:
25741868
PMCID:
PMC4544753

Massively parallel functional testing of MSH2 missense variants conferring Lynch syndrome risk.

Jia X, Burugula BB, Chen V, Lemons RM, Jayakody S, Maksutova M, Kitzman JO.

Am J Hum Genet. 2021 Jan 7;108(1):163-175. doi: 10.1016/j.ajhg.2020.12.003. Epub 2020 Dec 23.

PubMed [citation]
PMID:
33357406
PMCID:
PMC7820803

Details of each submission

From Color Diagnostics, LLC DBA Color Health, SCV000910129.3

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

This missense variant replaces asparagine with lysine at codon 242 of the MSH2 protein. Computational prediction tools and conservation analyses are inconclusive regarding the impact of this variant on protein structure and function. Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has not been reported in individuals affected with hereditary cancer in the literature. This variant has been identified in 2/251404 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.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

From Ambry Genetics, SCV002671500.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)

Description

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.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Sep 29, 2024