dbSNP rs397514701: ANTXR1:p.Arg88Gly (chr2-69044779-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_032208.3(ANTXR1):c.262C>G(p.Arg88Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,588 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R88Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ANTXR1
NM_032208.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.498

Publications

0 publications found

Variant links:

Genes affected

ANTXR1 (HGNC:21014): (ANTXR cell adhesion molecule 1) This gene encodes a type I transmembrane protein and is a tumor-specific endothelial marker that has been implicated in colorectal cancer. The encoded protein has been shown to also be a docking protein or receptor for Bacillus anthracis toxin, the causative agent of the disease, anthrax. The binding of the protective antigen (PA) component, of the tripartite anthrax toxin, to this receptor protein mediates delivery of toxin components to the cytosol of cells. Once inside the cell, the other two components of anthrax toxin, edema factor (EF) and lethal factor (LF) disrupt normal cellular processes. Three alternatively spliced variants that encode different protein isoforms have been described. [provided by RefSeq, Oct 2008]

ANTXR1 Gene-Disease associations (from GenCC):

GAPO syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet, Ambry Genetics
capillary infantile hemangioma
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ANTXR1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANTXR1	NM_032208.3 link	c.262C>G	p.Arg88Gly	missense_variant	Exon 3 of 18	ENST00000303714.9	NP_115584.1	Q9H6X2-1Q53FL1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANTXR1	ENST00000303714.9 link	c.262C>G	p.Arg88Gly	missense_variant	Exon 3 of 18	1	NM_032208.3	ENSP00000301945.4		Q9H6X2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461588

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727110

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33458

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26124

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111796

Other (OTH)

AF:

0.00

AC:

AN:

60376

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Uncertain

0.054

BayesDel_noAF

Benign

-0.16

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.42

T;.;.

Eigen

Benign

-0.026

Eigen_PC

Benign

-0.063

FATHMM_MKL

Benign

0.41

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Uncertain

0.21

MetaRNN

Uncertain

0.46

T;T;T

MetaSVM

Uncertain

0.035

MutationAssessor

Uncertain

2.3

M;M;M

PhyloP100

0.50

PrimateAI

Benign

0.32

PROVEAN

Uncertain

-3.1

D;D;D

REVEL

Uncertain

0.49

Sift

Uncertain

0.019

D;D;D

Sift4G

Uncertain

0.0070

D;D;D

Polyphen

0.93

P;D;P

Vest4

0.48

MutPred

0.45

Loss of MoRF binding (P = 0.0444);Loss of MoRF binding (P = 0.0444);Loss of MoRF binding (P = 0.0444);

MVP

0.73

MPC

2.1

ClinPred

0.98

GERP RS

1.4

Varity_R

0.52

gMVP

0.57

Mutation Taster

=64/36

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over