13-77903166-G-T

Variant names:

• chr13-77903166-G-T
• rs1212186974
• NM_001122659.3:c.791C>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001122659.3(EDNRB):​c.791C>A​(p.Ala264Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,718 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A264V) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: EDNRB NM_001122659.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.30
• Publications: 0 publications found

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18399999).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001122659.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EDNRB	NM_001122659.3	MANE Select	c.791C>A	p.Ala264Asp	missense	Exon 3 of 7	NP_001116131.1
	EDNRB	NM_001201397.2		c.1061C>A	p.Ala354Asp	missense	Exon 4 of 8	NP_001188326.1
	EDNRB	NM_000115.5		c.791C>A	p.Ala264Asp	missense	Exon 4 of 8	NP_000106.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EDNRB	ENST00000646607.2	MANE Select	c.791C>A	p.Ala264Asp	missense	Exon 3 of 7	ENSP00000493527.1
	EDNRB	ENST00000377211.8	TSL:1	c.1061C>A	p.Ala354Asp	missense	Exon 4 of 8	ENSP00000366416.4
	EDNRB	ENST00000626030.1	TSL:1	c.791C>A	p.Ala264Asp	missense	Exon 3 of 7	ENSP00000486202.1

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 151878 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1460718 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 726708

African (AFR) AF: 0.00 AC: 0 AN: 33398

American (AMR) AF: 0.00 AC: 0 AN: 44616

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26076

East Asian (EAS) AF: 0.00 AC: 0 AN: 39674

South Asian (SAS) AF: 0.00 AC: 0 AN: 86238

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53380

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111280

Other (OTH) AF: 0.00 AC: 0 AN: 60300

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 151878 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74170

African (AFR) AF: 0.00 AC: 0 AN: 41388

American (AMR) AF: 0.00 AC: 0 AN: 15228

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5150

South Asian (SAS) AF: 0.00 AC: 0 AN: 4806

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67908

Other (OTH) AF: 0.00 AC: 0 AN: 2092

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	20
DANN	Benign	0.93
DEOGEN2	Benign	0.27	T
Eigen	Benign	-0.23
Eigen_PC	Benign	0.019
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.0065	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.35	N
PhyloP100		2.3
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-0.080	N
REVEL	Benign	0.063
Sift	Benign	0.37	T
Sift4G	Benign	0.46	T
Polyphen		0.0010	B
Vest4		0.43
MutPred		0.46		Loss of catalytic residue at A264 (P = 0.043)
MVP		0.49
MPC		0.69
ClinPred		0.59	D
GERP RS		5.6
PromoterAI		-0.011	Neutral
Varity_R		0.17
gMVP		0.79
Mutation Taster		=47/53	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: rs1212186974; hg19: chr13-78477301;