Variant chr2-181457797-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_ModerateBS2

The NM_000885.6(ITGA4):c.143A>G(p.His48Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,510 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 1 hom. )

Consequence

ITGA4
NM_000885.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0850

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:

ITGA4 (HGNC:):

ITGA4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07031563).

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITGA4	NM_000885.6 linkuse as main transcript	c.143A>G	p.His48Arg	missense_variant	1/28	ENST00000397033.7	NP_000876.3	P13612-1
ITGA4	NM_001316312.2 linkuse as main transcript	c.143A>G	p.His48Arg	missense_variant	1/5		NP_001303241.1	P13612-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITGA4	ENST00000397033.7 linkuse as main transcript	c.143A>G	p.His48Arg	missense_variant	1/28	1	NM_000885.6	ENSP00000380227.2		P13612-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000404

AC:

AN:

247748

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134808

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000892

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461510

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727040

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000312

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 16, 2024

The c.143A>G (p.H48R) alteration is located in exon 1 (coding exon 1) of the ITGA4 gene. This alteration results from a A to G substitution at nucleotide position 143, causing the histidine (H) at amino acid position 48 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.045

BayesDel_addAF

Benign

-0.075

BayesDel_noAF

Benign

-0.35

CADD

Benign

6.8

DANN

Benign

0.74

DEOGEN2

Benign

0.15

.;T;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.096

T;T;T

M_CAP

Benign

0.047

MetaRNN

Benign

0.070

T;T;T

MetaSVM

Benign

-0.79

MutationAssessor

Benign

-0.46

N;N;.

PrimateAI

Benign

0.30

PROVEAN

Benign

-0.27

N;N;N

REVEL

Benign

0.094

Sift

Benign

0.31

T;T;T

Sift4G

Benign

0.46

T;T;T

Polyphen

0.0

.;B;B

Vest4

0.10

MutPred

0.37

Loss of catalytic residue at N49 (P = 0.0968);Loss of catalytic residue at N49 (P = 0.0968);Loss of catalytic residue at N49 (P = 0.0968);

MVP

0.77

MPC

0.63

ClinPred

0.032

GERP RS

2.2

Varity_R

0.15

gMVP

0.56

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

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