Variant rs864622089 details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_002354.3(EPCAM):c.766G>A(p.Ala256Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,880 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

EPCAM
NM_002354.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.00600

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a chain Epithelial cell adhesion molecule (size 290) in uniprot entity EPCAM_HUMAN there are 12 pathogenic changes around while only 2 benign (86%) in NM_002354.3

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2274121).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EPCAM	NM_002354.3 link	c.766G>A	p.Ala256Thr	missense_variant	7/9	ENST00000263735.9	NP_002345.2	P16422

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
EPCAM	ENST00000263735.9 link	c.766G>A	p.Ala256Thr	missense_variant	7/9	1	NM_002354.3	ENSP00000263735.4	P16422
EPCAM	ENST00000405271.5 link	c.850G>A	p.Ala284Thr	missense_variant	8/10	5		ENSP00000385476.1	B5MCA4
EPCAM	ENST00000456133.5 link	n.850G>A		non_coding_transcript_exon_variant	8/11	5		ENSP00000410675.1	B5MCA4
EPCAM	ENST00000490733.1 link	n.615G>A		non_coding_transcript_exon_variant	5/6	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461880

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 24, 2024

The p.A256T variant (also known as c.766G>A), located in coding exon 7 of the EPCAM gene, results from a G to A substitution at nucleotide position 766. The alanine at codon 256 is replaced by threonine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.20

BayesDel_addAF

Benign

-0.086

BayesDel_noAF

Benign

-0.36

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.16

T;T

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.27

FATHMM_MKL

Benign

0.26

LIST_S2

Uncertain

0.88

.;D

M_CAP

Benign

0.041

MetaRNN

Benign

0.23

T;T

MetaSVM

Uncertain

-0.26

MutationAssessor

Uncertain

2.5

.;M

PrimateAI

Benign

0.30

PROVEAN

Benign

-2.0

N;N

REVEL

Benign

0.25

Sift

Uncertain

0.0070

D;D

Sift4G

Uncertain

0.011

D;D

Polyphen

0.79

P;P

Vest4

0.40

MutPred

0.48

Gain of phosphorylation at A284 (P = 0.0535);.;

MVP

0.59

MPC

0.018

ClinPred

0.89

GERP RS

0.37

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.36

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over