9-127826640-CG-CGG

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The NM_001114753.3(ENG):​c.392dupC​(p.Val133GlyfsTer16) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Consequence

ENG
NM_001114753.3 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: -0.0560
Variant links:
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]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 9-127826640-C-CG is Pathogenic according to our data. Variant chr9-127826640-C-CG is described in ClinVar as [Pathogenic]. Clinvar id is 2034993.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ENGNM_001114753.3 linkc.392dupC p.Val133GlyfsTer16 frameshift_variant Exon 4 of 15 ENST00000373203.9 NP_001108225.1 P17813-1Q96CG0A0A024R878
ENGNM_000118.4 linkc.392dupC p.Val133GlyfsTer16 frameshift_variant Exon 4 of 14 NP_000109.1 P17813-2Q5T9B9
ENGNM_001406715.1 linkc.392dupC p.Val133GlyfsTer16 frameshift_variant Exon 4 of 8 NP_001393644.1
ENGNM_001278138.2 linkc.-155dupC 5_prime_UTR_variant Exon 4 of 15 NP_001265067.1 P17813Q96CG0F5GX88B7Z6Y5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ENGENST00000373203.9 linkc.392dupC p.Val133GlyfsTer16 frameshift_variant Exon 4 of 15 1 NM_001114753.3 ENSP00000362299.4 P17813-1
ENGENST00000344849.4 linkc.392dupC p.Val133GlyfsTer16 frameshift_variant Exon 4 of 14 1 ENSP00000341917.3 P17813-2
ENGENST00000480266.6 linkc.-155dupC 5_prime_UTR_variant Exon 4 of 15 2 ENSP00000479015.1 F5GX88
ENGENST00000462196.1 linkn.292dupC non_coding_transcript_exon_variant Exon 3 of 4 3 ENSP00000519251.1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
32
GnomAD4 genome
Cov.:
32

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

ENG-related disorder Pathogenic:1
Sep 22, 2024
PreventionGenetics, part of Exact Sciences
Significance: Likely pathogenic
Review Status: no assertion criteria provided
Collection Method: clinical testing

The ENG c.392dupC variant is predicted to result in a frameshift and premature protein termination (p.Val133Glyfs*16). To our knowledge, this variant has not been reported in the literature or a large population database, indicating this variant is rare. Frameshift variants in ENG are expected to be pathogenic. This variant is interpreted as likely pathogenic. -

not provided Pathogenic:1
Feb 08, 2022
Mayo Clinic Laboratories, Mayo Clinic
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

PP4, PM2, PVS1 -

Hereditary hemorrhagic telangiectasia Pathogenic:1
Apr 24, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Pathogenic
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This sequence change creates a premature translational stop signal (p.Val133Glyfs*16) in the ENG gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in ENG are known to be pathogenic (PMID: 15879500). 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. ClinVar contains an entry for this variant (Variation ID: 2034993). For these reasons, this variant has been classified as Pathogenic. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-130588919; API