2-189818173-A-G

Variant names:

• chr2-189818173-A-G
• rs587778610
• NM_000534.5:c.575A>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_000534.5(PMS1):​c.575A>G​(p.His192Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000701 in 1,426,622 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as not provided (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: PMS1 NM_000534.5 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 8.18
• Publications: 1 publications found

Genes affected

PMS1 (HGNC:9121): (PMS1 homolog 1, mismatch repair system component) This gene encodes a protein belonging to the DNA mismatch repair mutL/hexB family. This protein is thought to be involved in the repair of DNA mismatches, and it can form heterodimers with MLH1, a known DNA mismatch repair protein. Mutations in this gene cause hereditary nonpolyposis colorectal cancer type 3 (HNPCC3) either alone or in combination with mutations in other genes involved in the HNPCC phenotype, which is also known as Lynch syndrome. [provided by RefSeq, Jul 2008]

PMS1 Gene-Disease associations (from GenCC):

• Lynch syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000534.5. 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
	PMS1	NM_000534.5	MANE Select	c.575A>G	p.His192Arg	missense	Exon 5 of 13	NP_000525.1	P54277-1
	PMS1	NM_001321045.2		c.575A>G	p.His192Arg	missense	Exon 6 of 14	NP_001307974.1	P54277-1
	PMS1	NM_001321047.2		c.575A>G	p.His192Arg	missense	Exon 5 of 13	NP_001307976.1	P54277-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PMS1	ENST00000441310.7	TSL:1 MANE Select	c.575A>G	p.His192Arg	missense	Exon 5 of 13	ENSP00000406490.3	P54277-1
	PMS1	ENST00000409593.5	TSL:1	c.47A>G	p.His16Arg	missense	Exon 1 of 7	ENSP00000387169.1	P54277-4
	PMS1	ENST00000424059.1	TSL:1	n.575A>G		non_coding_transcript_exon	Exon 4 of 9

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.01e-7 AC: 1 AN: 1426622 Hom.: 0 Cov.: 25 AF XY: 0.00 AC XY: 0 AN XY: 711786

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 32784

American (AMR) AF: 0.00 AC: 0 AN: 44600

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25876

East Asian (EAS) AF: 0.00 AC: 0 AN: 39408

South Asian (SAS) AF: 0.0000117 AC: 1 AN: 85310

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53316

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5110

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1081096

Other (OTH) AF: 0.00 AC: 0 AN: 59122

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: not provided

Revision: no classification provided

Pathogenic	VUS	Benign	Condition
-	-	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.22
CADD	Pathogenic	31
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T
Eigen	Pathogenic	0.82
Eigen_PC	Pathogenic	0.76
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Uncertain	0.65	D
MutationAssessor	Uncertain	2.9	M
PhyloP100		8.2
PrimateAI	Uncertain	0.62	T
PROVEAN	Pathogenic	-6.2	D
REVEL	Pathogenic	0.82
Sift	Uncertain	0.0040	D
Sift4G	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.88
MutPred		0.52		Gain of MoRF binding (P = 0.0234)
MVP		0.98
MPC		0.41
ClinPred		0.99	D
GERP RS		5.4
PromoterAI		0.018	Neutral
Varity_R		0.77
gMVP		0.67
Mutation Taster		=28/72	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.31		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.31		Position offset: -5

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

Other links and lift over

dbSNP: rs587778610; hg19: chr2-190682899;