Genetic Variant NM_000535.7:c.830C>A (chr7-5995607-G-T) – ACMG Classification: Benign (-7 pts)

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 2P and 9B. PM1BP4_StrongBP6BS1

The NM_000535.7(PMS2):c.830C>A(p.Thr277Lys) variant causes a missense change. The variant allele was found at a frequency of 0.000239 in 1,613,328 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T277M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0014 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

PMS2
NM_000535.7 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:16

Conservation

PhyloP100: 3.75

Publications

12 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: Orphanet, ClinGen
Lynch syndrome 4
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
mismatch repair cancer syndrome 1
Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
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: Benign. The variant received -7 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 44 uncertain in NM_000535.7

BP4

Computational evidence support a benign effect (MetaRNN=0.011967629).

BP6

Variant 7-5995607-G-T is Benign according to our data. Variant chr7-5995607-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 135946.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00138 (210/152246) while in subpopulation AFR AF = 0.00476 (198/41554). AF 95% confidence interval is 0.00422. There are 1 homozygotes in GnomAd4. There are 113 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000535.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PMS2	NM_000535.7	MANE Select	c.830C>A	p.Thr277Lys	missense	Exon 8 of 15	NP_000526.2	P54278-1
PMS2	NM_001406866.1		c.1016C>A	p.Thr339Lys	missense	Exon 9 of 16	NP_001393795.1	A0A8V8TNX6
PMS2	NM_001322014.2		c.830C>A	p.Thr277Lys	missense	Exon 8 of 15	NP_001308943.1	A0A8V8TQ50

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PMS2	ENST00000265849.12	TSL:1 MANE Select	c.830C>A	p.Thr277Lys	missense	Exon 8 of 15	ENSP00000265849.7	P54278-1
PMS2	ENST00000382321.5	TSL:1	c.803+1719C>A		intron	N/A	ENSP00000371758.4	P54278-2
PMS2	ENST00000406569.8	TSL:1	n.830C>A		non_coding_transcript_exon	Exon 8 of 13	ENSP00000514464.1	P54278-3

Frequencies

GnomAD3 genomes

AF:

0.00130

AC:

198

AN:

152128

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00449

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:

0.00633

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.000278

AC:

AN:

251422

AF XY:

0.000199

show subpopulations

Gnomad AFR exome

AF:

0.00419

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000120

AC:

175

AN:

1461082

Hom.:

Cov.:

AF XY:

0.000103

AC XY:

AN XY:

726940

show subpopulations

African (AFR)

AF:

0.00412

AC:

138

AN:

33462

American (AMR)

AF:

0.0000894

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111292

Other (OTH)

AF:

0.000431

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.453

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00138

AC:

210

AN:

152246

Hom.:

Cov.:

AF XY:

0.00152

AC XY:

113

AN XY:

74426

show subpopulations

African (AFR)

AF:

0.00476

AC:

198

AN:

41554

American (AMR)

AF:

0.000328

AC:

AN:

15254

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68024

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000384

Hom.:

Bravo

AF:

0.00147

ESP6500AA

AF:

0.00386

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000387

AC:

Asia WGS

AF:

0.00231

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (6)

Hereditary cancer-predisposing syndrome (5)

Lynch syndrome (2)

not specified (2)

Breast and/or ovarian cancer (1)

Hereditary nonpolyposis colorectal neoplasms (1)

Lynch syndrome 4 (1)

Mismatch repair cancer syndrome 4 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.19

CADD

Benign

(source)

DANN

Benign

0.71

DEOGEN2

Benign

0.19

Eigen

Benign

-0.64

Eigen_PC

Benign

-0.57

FATHMM_MKL

Benign

0.16

LIST_S2

Uncertain

0.87

M_CAP

Benign

0.037

MetaRNN

Benign

0.012

MetaSVM

Benign

-0.90

MutationAssessor

Benign

1.5

PhyloP100

3.7

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.62

REVEL

Benign

0.25

Sift

Benign

0.93

Sift4G

Benign

0.51

Polyphen

0.30

Vest4

0.29

MVP

0.88

MPC

0.042

ClinPred

0.016

GERP RS

3.9

Varity_R

0.082

gMVP

0.36

Mutation Taster

=84/16

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over