rs138222146

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_000535.7(PMS2):​c.1616C>T​(p.Ala539Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,618 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A539A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

PMS2
NM_000535.7 missense

Scores

19

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:4

Conservation

PhyloP100: -0.381
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.082051754).
BP6
Variant 7-5987149-G-A is Benign according to our data. Variant chr7-5987149-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 480353.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=2}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PMS2NM_000535.7 linkc.1616C>T p.Ala539Val missense_variant Exon 11 of 15 ENST00000265849.12 NP_000526.2 P54278-1Q7Z3Q2B4DGM0

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PMS2ENST00000265849.12 linkc.1616C>T p.Ala539Val missense_variant Exon 11 of 15 1 NM_000535.7 ENSP00000265849.7 P54278-1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152146
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
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
GnomAD3 exomes
AF:
0.00000798
AC:
2
AN:
250750
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135676
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000882
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000226
AC:
33
AN:
1461472
Hom.:
0
Cov.:
44
AF XY:
0.0000234
AC XY:
17
AN XY:
727056
show subpopulations
Gnomad4 AFR exome
AF:
0.0000896
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000234
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152146
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74320
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000113
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.00000824
AC:
1
EpiCase
AF:
0.0000545
EpiControl
AF:
0.00

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:2Benign:4
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:2
Sep 05, 2022
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Nov 11, 2023
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The PMS2 c.1616C>T p.Ala539Val variant (rs138222146), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 480353). This variant is found in the general population with an overall allele frequency of 0.001% (3/282154 alleles) in the Genome Aggregation Database. Computational analyses predict that this variant is neutral (REVEL: 0.139). Due to limited information, the clinical significance of this variant is uncertain at this time. -

Hereditary cancer-predisposing syndrome Benign:2
Aug 22, 2018
Ambry Genetics
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. -

May 07, 2017
Color Diagnostics, LLC DBA Color Health
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Lynch syndrome Benign:1
Sep 25, 2024
All of Us Research Program, National Institutes of Health
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Hereditary nonpolyposis colorectal neoplasms Benign:1
Jan 20, 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
0.062
BayesDel_addAF
Benign
-0.27
T
BayesDel_noAF
Benign
-0.53
CADD
Benign
0.073
DANN
Benign
0.91
DEOGEN2
Benign
0.058
T;.;.;.;.
Eigen
Benign
-1.4
Eigen_PC
Benign
-1.4
FATHMM_MKL
Benign
0.028
N
LIST_S2
Benign
0.51
T;T;.;T;.
M_CAP
Benign
0.0082
T
MetaRNN
Benign
0.082
T;T;T;T;T
MetaSVM
Benign
-0.70
T
MutationAssessor
Benign
0.90
L;.;.;.;.
PrimateAI
Benign
0.19
T
PROVEAN
Benign
-0.20
N;N;.;.;.
REVEL
Benign
0.14
Sift
Benign
0.29
T;T;.;.;.
Sift4G
Benign
0.29
T;T;.;.;.
Polyphen
0.0
B;B;.;.;B
Vest4
0.075
MVP
0.32
MPC
0.036
ClinPred
0.028
T
GERP RS
-4.3
Varity_R
0.018
gMVP
0.15

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.070
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.

Other links and lift over

dbSNP: rs138222146; hg19: chr7-6026780; COSMIC: COSV56220521; API