NM_000251.3(MSH2):c.126C>G (p.Phe42Leu) AND Lynch syndrome

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Nov 20, 2023
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:: RCV003998479.2

Allele description [Variation Report for NM_000251.3(MSH2):c.126C>G (p.Phe42Leu)]

NM_000251.3(MSH2):c.126C>G (p.Phe42Leu)

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.126C>G (p.Phe42Leu)

Other names:

p.F42L:TTC>TTG

HGVS:

NC_000002.12:g.47403317C>G
NG_007110.2:g.5194C>G
NM_000251.3:c.126C>GMANE SELECT
NM_001258281.1:c.-30-43C>G
NP_000242.1:p.Phe42Leu
NP_000242.1:p.Phe42Leu
LRG_218t1:c.126C>G
LRG_218:g.5194C>G
LRG_218p1:p.Phe42Leu
NC_000002.11:g.47630456C>G
NM_000251.1:c.126C>G
NM_000251.2:c.126C>G
p.F42L

Protein change:

F42L

Links:

dbSNP: rs730881766

NCBI 1000 Genomes Browser:

rs730881766

Molecular consequence:

NM_001258281.1:c.-30-43C>G - intron variant - [Sequence Ontology: SO:0001627]
NM_000251.3:c.126C>G - missense variant - [Sequence Ontology: SO:0001583]

Observations:

Condition(s)

Name:: Lynch syndrome
Identifiers:: MONDO: MONDO:0005835; MedGen: C4552100

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV004828947	All of Us Research Program, National Institutes of Health	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain Significance (Nov 20, 2023)	germline	clinical testing	PubMed (3) [See all records that cite these PMIDs] 25186627, 33357406, 25741868

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV004828947

All of Us Research Program, National Institutes of Health

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain Significance
(Nov 20, 2023)

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	5	not provided	not provided	108544	not provided	clinical testing

Citations

PubMed

Frequency of mutations in individuals with breast cancer referred for BRCA1 and BRCA2 testing using next-generation sequencing with a 25-gene panel.

Tung N, Battelli C, Allen B, Kaldate R, Bhatnagar S, Bowles K, Timms K, Garber JE, Herold C, Ellisen L, Krejdovsky J, DeLeonardis K, Sedgwick K, Soltis K, Roa B, Wenstrup RJ, Hartman AR.

Cancer. 2015 Jan 1;121(1):25-33. doi: 10.1002/cncr.29010. Epub 2014 Sep 3.

PubMed [citation]

PMID:: 25186627

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 All of Us Research Program, National Institutes of Health, SCV004828947.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	5	not provided	not provided	clinical testing	PubMed (3)

Description

This missense variant replaces phenylalanine with leucine at codon 42 of the MSH2 protein. Computational prediction suggests that this variant may have deleterious impact on protein structure and function (internally defined REVEL score threshold >= 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 1/229070 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.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	108544	not provided	not provided		5	not provided	not provided	not provided

Last Updated: Nov 24, 2024

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