8-107251871-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2

The NM_001146.5(ANGPT1):c.1481G>A(p.Arg494Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000775 in 1,613,752 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R494P) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000099 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000075 ( 0 hom. )

Consequence

ANGPT1
NM_001146.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.91

Publications

6 publications found

Variant links:

Genes affected

ANGPT1 (HGNC:484): (angiopoietin 1) This gene encodes a secreted glycoprotein that belongs to the angiopoietin family. Members of this family play important roles in vascular development and angiogenesis. All angiopoietins bind with similar affinity to an endothelial cell-specific tyrosine-protein kinase receptor. The protein encoded by this gene is a secreted glycoprotein that activates the receptor by inducing its tyrosine phosphorylation. It plays a critical role in mediating reciprocal interactions between the endothelium and surrounding matrix and mesenchyme and inhibits endothelial permeability. The protein also contributes to blood vessel maturation and stability, and may be involved in early development of the heart. Mutations in this gene are associated with hereditary angioedema. [provided by RefSeq, Aug 2020]

ANGPT1 Gene-Disease associations (from GenCC):

glaucoma
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
primary congenital glaucoma
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
angioedema, hereditary, 5
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

ANGPT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.789

BS2

High AC in GnomAd4 at 15 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANGPT1	NM_001146.5 link	c.1481G>A	p.Arg494Gln	missense_variant	Exon 9 of 9	ENST00000517746.6	NP_001137.2	Q15389-1
ANGPT1	NM_001199859.3 link	c.1478G>A	p.Arg493Gln	missense_variant	Exon 9 of 9		NP_001186788.1	Q15389-2
ANGPT1	NM_001314051.2 link	c.881G>A	p.Arg294Gln	missense_variant	Exon 8 of 8		NP_001300980.1	Q15389B4DTQ9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANGPT1	ENST00000517746.6 link	c.1481G>A	p.Arg494Gln	missense_variant	Exon 9 of 9	1	NM_001146.5	ENSP00000428340.1		Q15389-1

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152098

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000865

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000104

AC:

AN:

250950

AF XY:

0.000133

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000795

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.000327

GnomAD4 exome

AF:

0.0000753

AC:

110

AN:

1461536

Hom.:

Cov.:

AF XY:

0.0000853

AC XY:

AN XY:

727050

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44686

Ashkenazi Jewish (ASJ)

AF:

0.000766

AC:

AN:

26114

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39694

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86224

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000738

AC:

AN:

1111784

Other (OTH)

AF:

0.0000662

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000985

AC:

AN:

152216

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74420

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41538

American (AMR)

AF:

0.00

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.000865

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000162

AC:

AN:

68020

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000147

Hom.:

Bravo

AF:

0.000102

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000123

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Dec 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 494 of the ANGPT1 protein (p.Arg494Gln). This variant is present in population databases (rs377442517, gnomAD 0.08%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with angioedema (PMID: 28601681). ClinVar contains an entry for this variant (Variation ID: 1506084). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. Experimental studies have shown that this missense change does not substantially affect ANGPT1 function (PMID: 28601681). 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

AlphaMissense

Uncertain

0.56

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Pathogenic

0.33

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.49

T;.;.;T

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.96

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.97

D;D;D;D

M_CAP

Uncertain

0.13

MetaRNN

Pathogenic

0.79

D;D;D;D

MetaSVM

Uncertain

0.68

MutationAssessor

Pathogenic

3.1

M;.;.;.

PhyloP100

7.9

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.6

D;D;D;D

REVEL

Pathogenic

0.85

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Uncertain

0.0030

D;D;D;D

Polyphen

1.0

D;.;.;.

Vest4

0.87

MVP

0.92

MPC

2.3

ClinPred

0.66

GERP RS

5.9

Varity_R

0.81

Mutation Taster

=27/73

disease causing

(source)

Splicing

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

Publications

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8-107251871-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over