rs1554809289

chr9-127818365-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001114753.3(ENG):c.1441C>T(p.Pro481Ser) variant causes a missense 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 Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ENG NM_001114753.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.38

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]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ENG	NM_001114753.3	c.1441C>T	p.Pro481Ser	missense_variant	12/15	ENST00000373203.9
LOC102723566	NR_136302.1	n.1432G>A		non_coding_transcript_exon_variant	3/6
ENG	NM_000118.4	c.1441C>T	p.Pro481Ser	missense_variant	12/14
ENG	NM_001278138.2	c.895C>T	p.Pro299Ser	missense_variant	12/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ENG	ENST00000373203.9	c.1441C>T	p.Pro481Ser	missense_variant	12/15	1	NM_001114753.3	P2
	ENST00000439298.5	n.1432G>A		non_coding_transcript_exon_variant	3/6	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary hemorrhagic telangiectasia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 16, 2017

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 missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with ENG-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change replaces proline with serine at codon 481 of the ENG protein (p.Pro481Ser). The proline residue is moderately conserved and there is a moderate physicochemical difference between proline and serine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Uncertain	0.086	D
BayesDel_noAF	Benign	-0.11
Cadd	Benign	22
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.61	D;D;.
Eigen	Uncertain	0.20
Eigen_PC	Benign	0.10
FATHMM_MKL	Benign	0.74	D
LIST_S2	Benign	0.79	T;T;T
M_CAP	Uncertain	0.090	D
MetaRNN	Uncertain	0.52	D;D;D
MetaSVM	Uncertain	-0.22	T
MutationAssessor	Benign	1.5	L;.;L
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-2.9	D;.;D
REVEL	Uncertain	0.46
Sift	Uncertain	0.025	D;.;D
Sift4G	Benign	0.12	T;T;D
Polyphen		1.0	D;.;.
Vest4		0.38
MutPred		0.62		Gain of sheet (P = 0.0125);.;Gain of sheet (P = 0.0125);
MVP		0.85
MPC		0.45
ClinPred		0.92	D
GERP RS		5.0
Varity_R		0.17
gMVP		0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1554809289; hg19: chr9-130580644;