dbSNP rs149160192: EPHB1:p.Arg637Ser (chr3-135192602-C-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_004441.5(EPHB1):c.1909C>A(p.Arg637Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,622 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

EPHB1
NM_004441.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.96

Publications

0 publications found

Variant links:

Genes affected

EPHB1 (HGNC:3392): (EPH receptor B1) 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 is a receptor for ephrin-B family members. [provided by RefSeq, Jul 2008]

EPHB1 links:

ENSG00000240086 (HGNC:):

ENSG00000240086 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.845

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EPHB1	NM_004441.5 link	c.1909C>A	p.Arg637Ser	missense_variant	Exon 11 of 16	ENST00000398015.8	NP_004432.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
EPHB1	ENST00000398015.8 link	c.1909C>A	p.Arg637Ser	missense_variant	Exon 11 of 16	1	NM_004441.5	ENSP00000381097.3
EPHB1	ENST00000647596.1 link	c.1909C>A	p.Arg637Ser	missense_variant	Exon 11 of 16			ENSP00000497153.1
EPHB1	ENST00000493838.1 link	c.592C>A	p.Arg198Ser	missense_variant	Exon 9 of 14	2		ENSP00000419574.1
ENSG00000240086	ENST00000649588.1 link	n.329-34274G>T		intron_variant	Intron 3 of 6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461622

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727084

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53392

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111844

Other (OTH)

AF:

0.00

AC:

AN:

60374

⚠️ 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.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.20

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.57

D;.;.

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.86

D;D;D

M_CAP

Benign

0.055

MetaRNN

Pathogenic

0.84

D;D;D

MetaSVM

Benign

-0.38

MutationAssessor

Benign

0.76

N;.;.

PhyloP100

6.0

PrimateAI

Pathogenic

0.88

PROVEAN

Uncertain

-4.4

D;.;D

REVEL

Uncertain

0.57

Sift

Uncertain

0.0010

D;.;D

Sift4G

Benign

0.15

T;.;T

Polyphen

1.0

D;.;.

Vest4

0.94

MutPred

0.56

Loss of methylation at R637 (P = 0.0137);Loss of methylation at R637 (P = 0.0137);.;

MVP

0.92

MPC

1.2

ClinPred

0.99

GERP RS

5.3

Varity_R

0.89

gMVP

0.69

Mutation Taster

=5/95

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over