NM_000251.3(MSH2):c.79C>A (p.Pro27Thr) AND Hereditary nonpolyposis colorectal neoplasms

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Jan 27, 2024
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

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:: RCV000226454.10

Allele description [Variation Report for NM_000251.3(MSH2):c.79C>A (p.Pro27Thr)]

NM_000251.3(MSH2):c.79C>A (p.Pro27Thr)

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.79C>A (p.Pro27Thr)

HGVS:

NC_000002.12:g.47403270C>A
NG_007110.2:g.5147C>A
NM_000251.3:c.79C>AMANE SELECT
NM_001258281.1:c.-30-90C>A
NP_000242.1:p.Pro27Thr
NP_000242.1:p.Pro27Thr
LRG_218t1:c.79C>A
LRG_218:g.5147C>A
LRG_218p1:p.Pro27Thr
NC_000002.11:g.47630409C>A
NM_000251.1:c.79C>A
NM_000251.2:c.79C>A

Protein change:

P27T

Links:

dbSNP: rs878853826

NCBI 1000 Genomes Browser:

rs878853826

Molecular consequence:

NM_001258281.1:c.-30-90C>A - intron variant - [Sequence Ontology: SO:0001627]
NM_000251.3:c.79C>A - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Hereditary nonpolyposis colorectal neoplasms
Identifiers:: MeSH: D003123; MedGen: C0009405

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000284188	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Jan 27, 2024)	germline	clinical testing	PubMed (3) [See all records that cite these PMIDs] 28135145, 33357406, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000284188

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Jan 27, 2024)

germline

clinical testing

PubMed (3)
[See all records that cite these PMIDs]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Cancer Susceptibility Gene Mutations in Individuals With Colorectal Cancer.

Yurgelun MB, Kulke MH, Fuchs CS, Allen BA, Uno H, Hornick JL, Ukaegbu CI, Brais LK, McNamara PG, Mayer RJ, Schrag D, Meyerhardt JA, Ng K, Kidd J, Singh N, Hartman AR, Wenstrup RJ, Syngal S.

J Clin Oncol. 2017 Apr 1;35(10):1086-1095. doi: 10.1200/JCO.2016.71.0012. Epub 2017 Jan 30.

PubMed [citation]

PMID:: 28135145
PMCID:: PMC5455355

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

See all PubMed Citations (3)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV000284188.9

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (3)

Description

This sequence change replaces proline, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 27 of the MSH2 protein (p.Pro27Thr). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with colorectal cancer (PMID: 28135145). ClinVar contains an entry for this variant (Variation ID: 237411). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (PMID: 33357406) indicates that this missense variant is not expected to disrupt MSH2 function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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