rs147188969

Variant names:

• chr9-127815922-G-A
• rs147188969
• ENST00000344849.5:c.1873C>T

Your query was ambiguous. Multiple possible variants found:

• chr9-127815922-G-A
• chr9-127815922-G-C

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Moderate PM2

The ENST00000344849.5(ENG):​c.1873C>T​(p.Gln625*) variant causes a stop gained change. The variant allele was found at a frequency of 0.000000697 in 1,435,240 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 (★). Synonymous variant affecting the same amino acid position (i.e. Q625Q) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: ENG ENST00000344849.5 stop_gained
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.69
• Publications: 1 publications found

Genes affected

ENG (HGNC:3349): (endoglin) This gene encodes a homodimeric transmembrane protein which is a major glycoprotein of the vascular endothelium. This protein is a component of the transforming growth factor beta receptor complex and it binds to the beta1 and beta3 peptides with high affinity. Mutations in this gene cause hereditary hemorrhagic telangiectasia, also known as Osler-Rendu-Weber syndrome 1, an autosomal dominant multisystemic vascular dysplasia. This gene may also be involved in preeclampsia and several types of cancer. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2013]

ENG Gene-Disease associations (from GenCC):

• telangiectasia, hereditary hemorrhagic, type 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp, ClinGen
• hereditary hemorrhagic telangiectasia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• juvenile polyposis syndrome

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ENSG00000225032 (HGNC:):

ACMG classification

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

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.00266 CDS is truncated, and there are 0 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ENG	NM_001114753.3	c.1852+21C>T		intron_variant	Intron 14 of 14	ENST00000373203.9	NP_001108225.1
ENG	NM_000118.4	c.1873C>T	p.Gln625*	stop_gained	Exon 14 of 14		NP_000109.1
ENG	NM_001278138.2	c.1306+21C>T		intron_variant	Intron 14 of 14		NP_001265067.1
LOC102723566	NR_136302.1	n.-144G>A		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENG	ENST00000373203.9	c.1852+21C>T		intron_variant	Intron 14 of 14	1	NM_001114753.3	ENSP00000362299.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.97e-7 AC: 1 AN: 1435240 Hom.: 0 Cov.: 31 AF XY: 0.00000141 AC XY: 1 AN XY: 711436

African (AFR) AF: 0.00 AC: 0 AN: 33204

American (AMR) AF: 0.00 AC: 0 AN: 40454

Ashkenazi Jewish (ASJ) AF: 0.0000392 AC: 1 AN: 25532

East Asian (EAS) AF: 0.00 AC: 0 AN: 38686

South Asian (SAS) AF: 0.00 AC: 0 AN: 82484

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50332

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5586

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1099592

Other (OTH) AF: 0.00 AC: 0 AN: 59370

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000165 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary hemorrhagic telangiectasia Uncertain:1

Oct 04, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Gln625*) in the ENG gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 1 amino acid(s) of the ENG protein. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ENG-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.65
CADD	Benign	13
DANN	Uncertain	0.99
Eigen	Benign	-0.15
Eigen_PC	Benign	-0.20
FATHMM_MKL	Benign	0.13	N
PhyloP100		3.7
Vest4		0.26
GERP RS		4.1
Mutation Taster		=153/47	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs147188969; hg19: chr9-130578201;