NM_000535.7:c.2380C>T

Variant names:

• chr7-5977653-G-A
• rs773393960
• NM_000535.7:c.2380C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000535.7(PMS2):​c.2380C>T​(p.Pro794Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000344 in 1,454,704 control chromosomes in the GnomAD database, including 1 homozygotes. 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. P794A) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0000034 (1 hom.)
• Consequence: PMS2 NM_000535.7 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:12 B:1
• Conservation: PhyloP100: 9.99
• Publications: 18 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PMS2	NM_000535.7	MANE Select	c.2380C>T	p.Pro794Ser	missense	Exon 14 of 15	NP_000526.2	P54278-1
	PMS2	NM_001406866.1		c.2566C>T	p.Pro856Ser	missense	Exon 15 of 16	NP_001393795.1	A0A8V8TNX6
	PMS2	NM_001322014.2		c.2413C>T	p.Pro805Ser	missense	Exon 14 of 15	NP_001308943.1	A0A8V8TQ50

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PMS2	ENST00000265849.12	TSL:1 MANE Select	c.2380C>T	p.Pro794Ser	missense	Exon 14 of 15	ENSP00000265849.7	P54278-1
	PMS2	ENST00000382321.5	TSL:1	c.1177C>T	p.Pro393Ser	missense	Exon 10 of 11	ENSP00000371758.4	P54278-2
	PMS2	ENST00000406569.8	TSL:1	n.*21C>T		non_coding_transcript_exon	Exon 12 of 13	ENSP00000514464.1	P54278-3

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD2 exomes AF: 0.00000807 AC: 2 AN: 247772 AF XY: 0.00000745

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000898

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000344 AC: 5 AN: 1454704 Hom.: 1 Cov.: 31 AF XY: 0.00000276 AC XY: 2 AN XY: 723714

African (AFR) AF: 0.00 AC: 0 AN: 33274

American (AMR) AF: 0.00 AC: 0 AN: 44676

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26094

East Asian (EAS) AF: 0.00 AC: 0 AN: 39440

South Asian (SAS) AF: 0.0000233 AC: 2 AN: 85828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53024

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5740

European-Non Finnish (NFE) AF: 0.00000271 AC: 3 AN: 1106536

Other (OTH) AF: 0.00 AC: 0 AN: 60092

GnomAD4 genome Cov.: 30

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	3	-	Hereditary cancer-predisposing syndrome (3)
-	3	-	Lynch syndrome 4 (3)
-	2	-	not specified (2)
-	1	-	Breast and/or ovarian cancer (1)
-	-	1	Hereditary nonpolyposis colorectal neoplasms (1)
-	1	-	Lynch syndrome 4;C5399763:Mismatch repair cancer syndrome 1 (1)
-	1	-	Mismatch repair cancer syndrome 4 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.24
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	0.030
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.26	T
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.85
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.17	D
MetaRNN	Uncertain	0.69	D
MetaSVM	Uncertain	-0.10	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		10
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-6.2	D
REVEL	Uncertain	0.54
Sift	Uncertain	0.014	D
Sift4G	Uncertain	0.012	D
Polyphen		0.97	D
Vest4		0.69
MutPred		0.33		Gain of MoRF binding (P = 0.0654)
MVP		0.90
MPC		3.3
ClinPred		0.98	D
GERP RS		5.8
Varity_R		0.56
gMVP		0.70
Mutation Taster		=25/75	disease causing

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

Other links and lift over

dbSNP: rs773393960; hg19: chr7-6017284;