NM_000251.3:c.317G>A

Variant names:

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong

The NM_000251.3(MSH2):c.317G>A(p.Arg106Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000187 in 1,611,810 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00020 ( 0 hom. )

Consequence

MSH2
NM_000251.3 missense

Scores

Clinical Significance

Benign reviewed by expert panel U:1B:13

Conservation

PhyloP100: 0.669

Variant links:

Genes affected

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.046949625).

BP6

Variant 2-47408506-G-A is Benign according to our data. Variant chr2-47408506-G-A is described in ClinVar as [Benign]. Clinvar id is 91062.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr2-47408506-G-A is described in Lovd as [Likely_benign]. Variant chr2-47408506-G-A is described in Lovd as [Benign].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MSH2	NM_000251.3 link	c.317G>A	p.Arg106Lys	missense_variant	Exon 2 of 16	ENST00000233146.7	NP_000242.1	P43246-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MSH2	ENST00000233146.7 link	c.317G>A	p.Arg106Lys	missense_variant	Exon 2 of 16	1	NM_000251.3	ENSP00000233146.2		P43246-1

Frequencies

GnomAD3 genomes

AF:

0.0000790

AC:

AN:

151964

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000676

AC:

AN:

251312

Hom.:

AF XY:

0.0000515

AC XY:

AN XY:

135826

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000123

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000199

AC:

290

AN:

1459846

Hom.:

Cov.:

AF XY:

0.000222

AC XY:

161

AN XY:

726338

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000254

Gnomad4 OTH exome

AF:

0.0000829

GnomAD4 genome

AF:

0.0000790

AC:

AN:

151964

Hom.:

Cov.:

AF XY:

0.0000809

AC XY:

AN XY:

74196

show subpopulations

Gnomad4 AFR

AF:

0.0000242

Gnomad4 AMR

AF:

0.000328

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000959

Hom.:

Bravo

AF:

0.0000869

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:13

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:4

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: research

- -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Mar 04, 2025

Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 06, 2023

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: MSH2 c.317G>A (p.Arg106Lys) results in a conservative amino acid change located in the DNA mismatch repair protein MutS-like, N-terminal domain (IPR007695) of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 7.1e-05 in 253718 control chromosomes (gnomAD and publication). This frequency is not higher than estimated for a pathogenic variant in MSH2 causing Lynch Syndrome (7.1e-05 vs 0.00057), allowing no conclusion about variant significance. c.317G>A has been reported in a proband from LS family with lack of co-segregation of this variant with disease. This patient also carried a pathogenic variant in MLH1, which could explain the patients phenotype (Spaepen_2006). The variant of interest has also been reported in a case-control study with comparable allele frequency detected in the control and case cohorts (Barnetson_2008). To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publications have been ascertained in the context of this evaluation (PMID: 18033691, 16736289, 22290698, 22949387, 31569399). Eight submitters have cited clinical-significance assessments for this variant to ClinVar after 2014. All submitters classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as likely benign. -

Mar 06, 2024

Quest Diagnostics Nichols Institute San Juan Capistrano

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Lynch syndrome 1

Benign:2

Oct 30, 2014

Pathway Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Sep 21, 2015

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:2

Nov 26, 2019

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 22949387, 22290698, 18033691, 16736289) -

Clinical Genetics, Academic Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Hereditary cancer-predisposing syndrome

Benign:2

Mar 10, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as 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. -

Oct 03, 2016

Color Diagnostics, LLC DBA Color Health

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Breast and/or ovarian cancer

Benign:1

Sep 12, 2022

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Lynch syndrome

Benign:1

Sep 05, 2013

International Society for Gastrointestinal Hereditary Tumours (InSiGHT)

Significance: Benign

Review Status: reviewed by expert panel

Collection Method: research

Multifactorial likelihood analysis posterior probability <0.001 -

Hereditary nonpolyposis colorectal neoplasms

Benign:1

Feb 02, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.20

CADD

Benign

9.5

DANN

Benign

0.49

DEOGEN2

Benign

0.33

T;T;.;.;.

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.74

T;T;T;T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.047

T;T;T;T;T

MetaSVM

Benign

-0.69

MutationAssessor

Benign

-1.8

N;.;.;.;.

PrimateAI

Benign

0.46

PROVEAN

Benign

0.48

N;N;N;.;N

REVEL

Uncertain

0.36

Sift

Benign

1.0

T;T;T;.;T

Sift4G

Benign

1.0

T;T;T;.;T

Polyphen

0.0

B;.;.;.;B

Vest4

0.15

MVP

0.79

MPC

0.0065

ClinPred

0.018

GERP RS

-1.8

Varity_R

0.091

gMVP

0.31

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over