NM_000535.7:c.2506G>C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM1BP4

The NM_000535.7(PMS2):c.2506G>C(p.Glu836Gln) variant causes a missense change. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E836K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 10)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

PMS2
NM_000535.7 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 5.01

Publications

0 publications found

Variant links:

Genes affected

PMS2 (HGNC:9122): (PMS1 homolog 2, mismatch repair system component) The protein encoded by this gene is a key component of the mismatch repair system that functions to correct DNA mismatches and small insertions and deletions that can occur during DNA replication and homologous recombination. This protein forms heterodimers with the gene product of the mutL homolog 1 (MLH1) gene to form the MutL-alpha heterodimer. The MutL-alpha heterodimer possesses an endonucleolytic activity that is activated following recognition of mismatches and insertion/deletion loops by the MutS-alpha and MutS-beta heterodimers, and is necessary for removal of the mismatched DNA. There is a DQHA(X)2E(X)4E motif found at the C-terminus of the protein encoded by this gene that forms part of the active site of the nuclease. Mutations in this gene have been associated with hereditary nonpolyposis colorectal cancer (HNPCC; also known as Lynch syndrome) and Turcot syndrome. [provided by RefSeq, Apr 2016]

PMS2 Gene-Disease associations (from GenCC):

Lynch syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Lynch syndrome 4
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
mismatch repair cancer syndrome 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
mismatch repair cancer syndrome 4
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
malignant pancreatic neoplasm
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
ovarian cancer
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
Muir-Torre syndrome
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
rhabdomyosarcoma
Inheritance: AR Classification: MODERATE Submitted by: Genomics England PanelApp
breast cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
prostate cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
hereditary breast carcinoma
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

PMS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM1

In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 15 uncertain in NM_000535.7

BP4

Computational evidence support a benign effect (MetaRNN=0.3919027).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PMS2	NM_000535.7 link	c.2506G>C	p.Glu836Gln	missense_variant	Exon 15 of 15	ENST00000265849.12	NP_000526.2	P54278-1Q7Z3Q2B4DGM0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PMS2	ENST00000265849.12 link	c.2506G>C	p.Glu836Gln	missense_variant	Exon 15 of 15	1	NM_000535.7	ENSP00000265849.7		P54278-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

77862

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00000484

AC:

AN:

619226

Hom.:

Cov.:

AF XY:

0.00000611

AC XY:

AN XY:

327398

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

16874

American (AMR)

AF:

0.00

AC:

AN:

30958

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

17916

East Asian (EAS)

AF:

0.00

AC:

AN:

29014

South Asian (SAS)

AF:

0.00

AC:

AN:

59658

European-Finnish (FIN)

AF:

0.00

AC:

AN:

44868

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2374

European-Non Finnish (NFE)

AF:

0.00000776

AC:

AN:

386648

Other (OTH)

AF:

0.00

AC:

AN:

30916

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.408

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

77862

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

35972

African (AFR)

AF:

0.00

AC:

AN:

20296

American (AMR)

AF:

0.00

AC:

AN:

6856

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2072

East Asian (EAS)

AF:

0.00

AC:

AN:

2408

South Asian (SAS)

AF:

0.00

AC:

AN:

1828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

4508

Middle Eastern (MID)

AF:

0.00

AC:

AN:

190

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

38214

Other (OTH)

AF:

0.00

AC:

AN:

960

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 30, 2022

Genetic Services Laboratory, University of Chicago

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

DNA sequence analysis of the PMS2 gene demonstrated a sequence change, c.2506G>C, in exon 15 that results in an amino acid change, p.Glu836Gln. This sequence change does not appear to have been previously described in individuals with PMS2-related disorders and has also not been described in population databases such as ExAC and gnomAD. The p.Glu836Gln change affects a moderately conserved amino acid residue located in a domain of the PMS2 protein that is not known to be functional. In-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL) provide contradictory results for the p.Glu836Gln substitution. Due to insufficient evidences and the lack of functional studies, the clinical significance of the p.Glu836Gln change remains unknown at this time. -

Hereditary nonpolyposis colorectal neoplasms

Uncertain:1

Oct 21, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with glutamine, which is neutral and polar, at codon 836 of the PMS2 protein (p.Glu836Gln). The frequency data for this variant in the population databases (gnomAD) is considered unreliable due to the presence of homologous sequence, such as pseudogenes or paralogs, in the genome. This variant has not been reported in the literature in individuals affected with PMS2-related conditions. ClinVar contains an entry for this variant (Variation ID: 2443220). Invitae Evidence Modeling incorporating data from in vitro experimental studies (internal data) indicates that this missense variant is not expected to disrupt PMS2 function with a negative predictive value of 95%. 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. -

Hereditary cancer-predisposing syndrome

Uncertain:1

Jun 08, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.E836Q variant (also known as c.2506G>C), located in coding exon 15 of the PMS2 gene, results from a G to C substitution at nucleotide position 2506. The glutamic acid at codon 836 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Based on the available evidence, the clinical significance of this variant remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

0.0070

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

T;.;.;.;.;.

Eigen

Benign

0.092

Eigen_PC

Benign

0.15

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.92

D;D;.;D;.;D

M_CAP

Benign

0.023

MetaRNN

Benign

0.39

T;T;T;T;T;T

MetaSVM

Uncertain

-0.23

MutationAssessor

Benign

1.6

L;.;.;.;.;.

PhyloP100

5.0

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-2.1

N;N;.;.;.;N

REVEL

Benign

0.29

Sift

Benign

0.059

T;D;.;.;.;T

Sift4G

Uncertain

0.033

D;D;.;.;.;T

Polyphen

0.43

B;D;.;.;D;B

Vest4

0.39

MutPred

0.34

Gain of MoRF binding (P = 0.081);.;.;.;.;.;

MVP

0.86

MPC

3.2

ClinPred

0.93

GERP RS

3.5

Varity_R

0.21

gMVP

0.66

Mutation Taster

=74/26

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over