chr13-77898244-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_001122659.3(EDNRB):c.1285G>A(p.Gly429Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00014 in 1,611,962 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

EDNRB
NM_001122659.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 5.88

Variant links:

Genes affected

EDNRB (HGNC:3180): (endothelin receptor type B) The protein encoded by this gene is a G protein-coupled receptor which activates a phosphatidylinositol-calcium second messenger system. Its ligand, endothelin, consists of a family of three potent vasoactive peptides: ET1, ET2, and ET3. Studies suggest that the multigenic disorder, Hirschsprung disease type 2, is due to mutations in the endothelin receptor type B gene. Alternative splicing and the use of alternative promoters results in multiple transcript variants. [provided by RefSeq, Oct 2016]

EDNRB links:

EDNRB-AS1 (HGNC:49045): (EDNRB antisense RNA 1)

EDNRB-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15830201).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000197 (30/152014) while in subpopulation AFR AF= 0.00053 (22/41520). AF 95% confidence interval is 0.000358. There are 0 homozygotes in gnomad4. There are 12 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EDNRB	NM_001122659.3 link	c.1285G>A	p.Gly429Arg	missense_variant	Exon 7 of 7	ENST00000646607.2	NP_001116131.1	P24530-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EDNRB	ENST00000646607.2 link	c.1285G>A	p.Gly429Arg	missense_variant	Exon 7 of 7		NM_001122659.3	ENSP00000493527.1		P24530-1

Frequencies

GnomAD3 genomes

AF:

0.000198

AC:

AN:

151896

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

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:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000124

AC:

AN:

249884

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

135088

show subpopulations

Gnomad AFR exome

AF:

0.000493

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000124

Gnomad OTH exome

AF:

0.000329

GnomAD4 exome

AF:

0.000134

AC:

195

AN:

1459948

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

726268

show subpopulations

Gnomad4 AFR exome

AF:

0.000270

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000696

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000151

Gnomad4 OTH exome

AF:

0.0000664

GnomAD4 genome

AF:

0.000197

AC:

AN:

152014

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74308

show subpopulations

Gnomad4 AFR

AF:

0.000530

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000181

Hom.:

Bravo

AF:

0.000227

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000124

AC:

EpiCase

AF:

0.0000546

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:2

Aug 11, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Gly519Arg variant in EDNRB has not been previously reported in individuals with hearing loss or Waardenburg syndrome, but has been identified in 6/65674 E uropean chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broad institute.org; dbSNP rs144565124). Although this variant has been seen in the ge neral population, its frequency is not high enough to rule out a pathogenic role . Computational prediction tools and conservation analyses do not provide strong support for or against an impact to the protein. In summary, the clinical signi ficance of the Gly519Arg variant is uncertain. -

Jan 23, 2019

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: EDNRB c.1285G>A (p.Gly429Arg) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00014 in 275528 control chromosomes (gnomAD). To our knowledge, no occurrence of c.1285G>A in individuals affected with Waardenburg syndrome type 4A and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation, and both laboratories classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inborn genetic diseases

Uncertain:1

Oct 26, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1285G>A (p.G429R) alteration is located in exon 8 (coding exon 7) of the EDNRB gene. This alteration results from a G to A substitution at nucleotide position 1285, causing the glycine (G) at amino acid position 429 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Hirschsprung Disease, Recessive

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Jan 20, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 429 of the EDNRB protein (p.Gly429Arg). This variant is present in population databases (rs144565124, gnomAD 0.05%). This variant has not been reported in the literature in individuals affected with EDNRB-related conditions. ClinVar contains an entry for this variant (Variation ID: 228662). 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -

ABCD syndrome;C1838564:Hirschsprung disease, susceptibility to, 2;C1848519:Waardenburg syndrome type 4A

Uncertain:1

Mar 08, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Waardenburg syndrome

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.46

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.40

.;T;T;T;T;T

Eigen

Uncertain

0.63

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.91

D;.;.;.;.;D

M_CAP

Benign

0.065

MetaRNN

Benign

0.16

T;T;T;T;T;T

MetaSVM

Uncertain

-0.19

MutationAssessor

Benign

1.4

.;L;L;L;L;L

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-1.5

N;.;.;N;.;.

REVEL

Benign

0.17

Sift

Uncertain

0.0020

D;.;.;D;.;.

Sift4G

Uncertain

0.0070

D;.;.;D;.;.

Polyphen

0.80

P;D;D;D;D;D

Vest4

0.39

MutPred

0.23

.;Gain of MoRF binding (P = 0.0338);Gain of MoRF binding (P = 0.0338);Gain of MoRF binding (P = 0.0338);Gain of MoRF binding (P = 0.0338);Gain of MoRF binding (P = 0.0338);

MVP

0.88

MPC

1.4

ClinPred

0.082

GERP RS

6.0

Varity_R

0.12

gMVP

0.63

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