20-59300794-C-A

Variant names:

• chr20-59300794-C-A
• rs375594972
• NM_207034.3:c.-19C>A

Variant summary

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

The NM_207034.3(EDN3):​c.-19C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000635 in 1,606,992 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 0.000092 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000060 (0 hom.)
• Consequence: EDN3 NM_207034.3 5_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.0100
• Publications: 2 publications found

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)

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.33).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EDN3	NM_207034.3	c.-19C>A		5_prime_UTR_variant	Exon 1 of 5	ENST00000337938.7	NP_996917.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EDN3	ENST00000337938.7	c.-19C>A		5_prime_UTR_variant	Exon 1 of 5	1	NM_207034.3	ENSP00000337128.2

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152232 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00270

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: 0.000278 AC: 65 AN: 233756 AF XY: 0.000226

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00352

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000192

Gnomad OTH exome AF: 0.000175

GnomAD4 exome AF: 0.0000605 AC: 88 AN: 1454642 Hom.: 0 Cov.: 31 AF XY: 0.0000484 AC XY: 35 AN XY: 723346

African (AFR) AF: 0.00 AC: 0 AN: 33284

American (AMR) AF: 0.00 AC: 0 AN: 44304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25898

East Asian (EAS) AF: 0.00208 AC: 82 AN: 39454

South Asian (SAS) AF: 0.00 AC: 0 AN: 85466

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4978

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1109880

Other (OTH) AF: 0.000100 AC: 6 AN: 59970

GnomAD4 genome AF: 0.0000919 AC: 14 AN: 152350 Hom.: 0 Cov.: 33 AF XY: 0.0000537 AC XY: 4 AN XY: 74508

African (AFR) AF: 0.00 AC: 0 AN: 41596

American (AMR) AF: 0.00 AC: 0 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00270 AC: 14 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.000523 Hom.: 0

Bravo AF: 0.0000945

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Uncertain:2

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Sep 08, 2021

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis, which includes splice predictors and evolutionary conservation, suggests this variant does not impact gene splicing; the c.-19 position is conserved across species. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; This variant is associated with the following publications: (PMID: 14633923) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.33
CADD	Benign	12
DANN	Benign	0.93
PhyloP100		0.010
PromoterAI		-0.092	Neutral
Mutation Taster		=8/292	disease causing

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

Other links and lift over

dbSNP: rs375594972; hg19: chr20-57875849;