chr20-59300823-G-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_207034.3(EDN3):c.11G>C(p.Gly4Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,611,322 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 1 hom. )

Consequence

EDN3
NM_207034.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.83

Publications

2 publications found

Variant links:

Genes affected

EDN3 (HGNC:3178): (endothelin 3) The protein encoded by this gene is a member of the endothelin family. Endothelins are endothelium-derived vasoactive peptides involved in a variety of biological functions. The active form of this protein is a 21 amino acid peptide processed from the precursor protein. The active peptide is a ligand for endothelin receptor type B (EDNRB). The interaction of this endothelin with EDNRB is essential for development of neural crest-derived cell lineages, such as melanocytes and enteric neurons. Mutations in this gene and EDNRB have been associated with Hirschsprung disease (HSCR) and Waardenburg syndrome (WS), which are congenital disorders involving neural crest-derived cells. Altered expression of this gene is implicated in tumorigenesis. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Oct 2014]

EDN3 Gene-Disease associations (from GenCC):

Waardenburg syndrome
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
Waardenburg syndrome type 4B
Inheritance: AR, AD, SD Classification: DEFINITIVE, STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, PanelApp Australia, G2P
Waardenburg-Shah syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Hirschsprung disease, susceptibility to, 4
Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

EDN3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.12655362).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EDN3	NM_207034.3 link	c.11G>C	p.Gly4Ala	missense_variant	Exon 1 of 5	ENST00000337938.7	NP_996917.1	P14138-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EDN3	ENST00000337938.7 link	c.11G>C	p.Gly4Ala	missense_variant	Exon 1 of 5	1	NM_207034.3	ENSP00000337128.2		P14138-1

Frequencies

GnomAD3 genomes

AF:

0.000144

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000530

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

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

GnomAD2 exomes

AF:

0.0000454

AC:

AN:

242094

AF XY:

0.0000151

show subpopulations

Gnomad AFR exome

AF:

0.000743

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000151

AC:

AN:

1458952

Hom.:

Cov.:

AF XY:

0.00000827

AC XY:

AN XY:

725766

show subpopulations

African (AFR)

AF:

0.000629

AC:

AN:

33400

American (AMR)

AF:

0.00

AC:

AN:

44652

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26048

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.00

AC:

AN:

86116

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52040

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5304

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111544

Other (OTH)

AF:

0.0000166

AC:

AN:

60176

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000144

AC:

AN:

152370

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74516

show subpopulations

African (AFR)

AF:

0.000529

AC:

AN:

41598

American (AMR)

AF:

0.00

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.000170

ExAC

AF:

0.0000661

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Aug 04, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 1433645). This variant has not been reported in the literature in individuals affected with EDN3-related conditions. This variant is present in population databases (rs202140125, gnomAD 0.07%). This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 4 of the EDN3 protein (p.Gly4Ala). -

Aug 01, 2023

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Inborn genetic diseases

Uncertain:1

Mar 27, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.11G>C (p.G4A) alteration is located in exon 1 (coding exon 1) of the EDN3 gene. This alteration results from a G to C substitution at nucleotide position 11, causing the glycine (G) at amino acid position 4 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.17

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.50

D;.;D;.;T;.

Eigen

Uncertain

0.49

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.80

.;T;T;T;T;T

M_CAP

Pathogenic

0.49

MetaRNN

Benign

0.13

T;T;T;T;T;T

MetaSVM

Uncertain

0.58

MutationAssessor

Uncertain

2.2

M;M;M;.;.;M

PhyloP100

2.8

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.8

N;N;N;.;N;N

REVEL

Uncertain

0.33

Sift

Benign

0.036

D;T;D;.;T;D

Sift4G

Benign

0.11

T;T;T;.;T;T

Polyphen

0.99

D;.;D;.;D;D

Vest4

0.17

MVP

0.91

MPC

0.56

ClinPred

0.18

GERP RS

4.2

PromoterAI

0.026

Neutral

(source)

Varity_R

0.19

gMVP

0.42

Mutation Taster

=76/24

polymorphism

(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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chr20-59300823-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over