chr2-47377055-C-G

Variant names:

• chr2-47377055-C-G
• rs772471530
• NM_002354.3:c.533C>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002354.3(EPCAM):​c.533C>G​(p.Pro178Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 17/22 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. P178A) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: EPCAM NM_002354.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.97
• Publications: 2 publications found

Genes affected

EPCAM (HGNC:11529): (epithelial cell adhesion molecule) This gene encodes a carcinoma-associated antigen and is a member of a family that includes at least two type I membrane proteins. This antigen is expressed on most normal epithelial cells and gastrointestinal carcinomas and functions as a homotypic calcium-independent cell adhesion molecule. The antigen is being used as a target for immunotherapy treatment of human carcinomas. Mutations in this gene result in congenital tufting enteropathy. [provided by RefSeq, Dec 2008]

EPCAM Gene-Disease associations (from GenCC):

• Lynch syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Lynch syndrome 8

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• congenital diarrhea 5 with tufting enteropathy

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, Orphanet
• hereditary breast carcinoma

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.108897).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002354.3. 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
	EPCAM	NM_002354.3	MANE Select	c.533C>G	p.Pro178Arg	missense	Exon 5 of 9	NP_002345.2	P16422

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EPCAM	ENST00000263735.9	TSL:1 MANE Select	c.533C>G	p.Pro178Arg	missense	Exon 5 of 9	ENSP00000263735.4	P16422
	EPCAM	ENST00000405271.5	TSL:5	c.617C>G	p.Pro206Arg	missense	Exon 6 of 10	ENSP00000385476.1	B5MCA4
	EPCAM	ENST00000895681.1		c.533C>G	p.Pro178Arg	missense	Exon 5 of 9	ENSP00000565740.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 28

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	3.1
DANN	Benign	0.54
DEOGEN2	Benign	0.029	T
Eigen	Benign	-0.86
Eigen_PC	Benign	-0.88
FATHMM_MKL	Benign	0.023	N
LIST_S2	Benign	0.52	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	1.6	L
PhyloP100		-2.0
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.064
Sift	Benign	0.11	T
Sift4G	Benign	0.24	T
Polyphen		0.0030	B
Vest4		0.20
MutPred		0.46		Gain of loop (P = 0.0111)
MVP		0.39
MPC		0.013
ClinPred		0.071	T
GERP RS		0.88
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.079
gMVP		0.29
Mutation Taster		=71/29	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs772471530; hg19: chr2-47604194;