Genetic Variant ITGA4:p.Arg17Gly (chr2-181457703-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000885.6(ITGA4):c.49C>G(p.Arg17Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 151,898 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. 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. R17W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Consequence

ITGA4
NM_000885.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.49

Publications

0 publications found

Variant links:

Genes affected

ITGA4 (HGNC:6140): (integrin subunit alpha 4) The gene encodes a member of the integrin alpha chain family of proteins. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha 4 subunit. This subunit associates with a beta 1 or beta 7 subunit to form an integrin that may play a role in cell motility and migration. This integrin is a therapeutic target for the treatment of multiple sclerosis, Crohn's disease and inflammatory bowel disease. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2015]

ITGA4 links:

ENSG00000307562 (HGNC:):

ENSG00000307562 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.12536961).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGA4	NM_000885.6 link	c.49C>G	p.Arg17Gly	missense_variant	Exon 1 of 28	ENST00000397033.7	NP_000876.3	P13612-1
ITGA4	NM_001316312.2 link	c.49C>G	p.Arg17Gly	missense_variant	Exon 1 of 5		NP_001303241.1	P13612-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITGA4	ENST00000397033.7 link	c.49C>G	p.Arg17Gly	missense_variant	Exon 1 of 28	1	NM_000885.6	ENSP00000380227.2		P13612-1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151898

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

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

GnomAD2 exomes

AF:

0.00000412

AC:

AN:

242784

AF XY:

0.00000752

show subpopulations

Gnomad AFR exome

AF:

0.0000689

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.0000198

AC:

AN:

151898

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74168

show subpopulations

African (AFR)

AF:

0.0000725

AC:

AN:

41354

American (AMR)

AF:

0.00

AC:

AN:

15258

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5154

South Asian (SAS)

AF:

0.00

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10578

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67958

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000828

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.090

BayesDel_noAF

Benign

-0.18

CADD

Benign

2.1

(source)

DANN

Benign

0.81

DEOGEN2

Benign

0.18

.;T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.081

LIST_S2

Benign

0.54

T;T;T

M_CAP

Uncertain

0.16

MetaRNN

Benign

0.13

T;T;T

MetaSVM

Benign

-0.48

MutationAssessor

Benign

1.5

L;L;.

PhyloP100

-1.5

PrimateAI

Benign

0.32

PROVEAN

Benign

-0.80

N;N;N

REVEL

Uncertain

0.41

Sift

Benign

0.23

T;T;T

Sift4G

Benign

0.55

T;T;T

Polyphen

0.057, 0.023

.;B;B

Vest4

0.17

MutPred

0.47

Loss of MoRF binding (P = 0.0152);Loss of MoRF binding (P = 0.0152);Loss of MoRF binding (P = 0.0152);

MVP

0.74

MPC

0.67

ClinPred

0.025

GERP RS

0.087

PromoterAI

-0.024

Neutral

(source)

Varity_R

0.062

gMVP

0.55

Mutation Taster

=84/16

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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chr2-181457703-C-G

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