7-100803510-G-T

Position:

chr7-100803510-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000358173.8(EPHB4):c.2915C>A(p.Ala972Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000188 in 1,592,296 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A972A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

EPHB4
ENST00000358173.8 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.24

Variant links:

Genes affected

EPHB4 (HGNC:3395): (EPH receptor B4) Ephrin receptors and their ligands, the ephrins, mediate numerous developmental processes, particularly in the nervous system. Based on their structures and sequence relationships, ephrins are divided into the ephrin-A (EFNA) class, which are anchored to the membrane by a glycosylphosphatidylinositol linkage, and the ephrin-B (EFNB) class, which are transmembrane proteins. The Eph family of receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. Ephrin receptors make up the largest subgroup of the receptor tyrosine kinase (RTK) family. The protein encoded by this gene binds to ephrin-B2 and plays an essential role in vascular development. [provided by RefSeq, Jul 2008]

EPHB4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13691005).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EPHB4	NM_004444.5 linkuse as main transcript	c.2915C>A	p.Ala972Asp	missense_variant	17/17	ENST00000358173.8	NP_004435.3
EPHB4	XM_017011816.2 linkuse as main transcript	c.2969C>A	p.Ala990Asp	missense_variant	17/17		XP_016867305.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EPHB4	ENST00000358173.8 linkuse as main transcript	c.2915C>A	p.Ala972Asp	missense_variant	17/17	1	NM_004444.5	ENSP00000350896	P1	P54760-1
EPHB4	ENST00000360620.7 linkuse as main transcript	c.2759C>A	p.Ala920Asp	missense_variant	16/16	1		ENSP00000353833
EPHB4	ENST00000487222.5 linkuse as main transcript	n.4116C>A		non_coding_transcript_exon_variant	16/16	1
EPHB4	ENST00000616502.4 linkuse as main transcript	c.*1380C>A		3_prime_UTR_variant	14/14	5		ENSP00000482702		P54760-3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000139

AC:

AN:

1440120

Hom.:

Cov.:

AF XY:

0.00000140

AC XY:

AN XY:

713712

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000182

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

EPHB4-associated vascular malformation spectrum

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Molecular Genetics, Royal Melbourne Hospital

Jan 05, 2024

This sequence change in EPHB4 is predicted to replace alanine with aspartic acid at codon 972, p.(Ala972Asp). The alanine residue is moderately conserved (61/96 vertebrates, UCSC), and is not located in an annotated domain. There is a large physicochemical difference between alanine and aspartic acid. This variant is present in a single individual in the East Asian population (1/5,176 alleles) in the population database gnomAD v3.1. To our knowledge, this variant has not been reported in the literature. Multiple lines of computational evidence predict a benign effect for the missense substitution (6/6 algorithms). Based on the classification scheme RMH Modified ACMG Guidelines v1.5.1, this variant is classified as a VARIANT OF UNCERTAIN SIGNIFICANCE. Following criteria are met: PM2_Supporting, BP4. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.045

BayesDel_noAF

Benign

-0.30

CADD

Benign

DANN

Benign

0.91

DEOGEN2

Benign

0.093

.;T

Eigen

Benign

-0.020

Eigen_PC

Benign

0.084

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.72

T;T

M_CAP

Uncertain

0.092

MetaRNN

Benign

0.14

T;T

MetaSVM

Uncertain

-0.20

MutationAssessor

Benign

1.4

.;L

MutationTaster

Benign

0.64

D;D

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.2

N;N

REVEL

Benign

0.037

Sift

Benign

0.33

T;T

Sift4G

Uncertain

0.038

D;T

Polyphen

0.30

B;B

Vest4

0.21

MutPred

0.27

.;Gain of relative solvent accessibility (P = 0.0027);

MVP

0.46

MPC

0.79

ClinPred

0.36

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.25

gMVP

0.68

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over