rs755962839

Positions:

chr9-127818831-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001114753.3(ENG):c.1313A>G(p.Lys438Arg) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,174 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/25 in silico tools predict a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

ENG
NM_001114753.3 missense, splice_region

Scores

Splicing: ADA: 0.01373

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.145

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]

ENG links:

ENSG00000225032 (HGNC:):

ENSG00000225032 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17441571).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ENG	NM_001114753.3 linkuse as main transcript	c.1313A>G	p.Lys438Arg	missense_variant, splice_region_variant	11/15	ENST00000373203.9	NP_001108225.1	P17813-1Q96CG0A0A024R878
ENG	NM_000118.4 linkuse as main transcript	c.1313A>G	p.Lys438Arg	missense_variant, splice_region_variant	11/14		NP_000109.1	P17813-2Q5T9B9
ENG	NM_001278138.2 linkuse as main transcript	c.767A>G	p.Lys256Arg	missense_variant, splice_region_variant	11/15		NP_001265067.1	P17813Q96CG0F5GX88B7Z6Y5
LOC102723566	NR_136302.1 linkuse as main transcript	n.1568+120T>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ENG	ENST00000373203.9 linkuse as main transcript	c.1313A>G	p.Lys438Arg	missense_variant, splice_region_variant	11/15	1	NM_001114753.3	ENSP00000362299.4		P17813-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251416

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74350

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Telangiectasia, hereditary hemorrhagic, type 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jul 12, 2021

- -

Hereditary hemorrhagic telangiectasia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 22, 2022

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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 569033). This variant has not been reported in the literature in individuals affected with ENG-related conditions. This variant is present in population databases (rs755962839, gnomAD 0.007%). This sequence change replaces lysine, which is basic and polar, with arginine, which is basic and polar, at codon 438 of the ENG protein (p.Lys438Arg). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.50

T;T;.

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.39

FATHMM_MKL

Benign

0.51

LIST_S2

Benign

0.64

T;T;T

M_CAP

Benign

0.0074

MetaRNN

Benign

0.17

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;.;L

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.1

N;.;N

REVEL

Benign

0.17

Sift

Benign

0.23

T;.;T

Sift4G

Benign

0.44

T;T;T

Polyphen

0.95

P;.;.

Vest4

0.13

MutPred

0.60

Loss of methylation at K438 (P = 0.0088);.;Loss of methylation at K438 (P = 0.0088);

MVP

0.48

MPC

0.20

ClinPred

0.19

GERP RS

1.9

Varity_R

0.16

gMVP

0.82

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.014

dbscSNV1_RF

Benign

0.092

SpliceAI score (max)

0.47

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.47

Position offset: -1

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