2-181534370-T-G

Variant summary

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

The NM_000885.6(ITGA4):ā€‹c.2883T>Gā€‹(p.His961Gln) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000363 in 1,376,402 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/23 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)
Exomes š‘“: 0.0000036 ( 0 hom. )

Consequence

ITGA4
NM_000885.6 missense, splice_region

Scores

19
Splicing: ADA: 0.0001095
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.518
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]

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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=0.09049544).
BS2
High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ITGA4NM_000885.6 linkuse as main transcriptc.2883T>G p.His961Gln missense_variant, splice_region_variant 26/28 ENST00000397033.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ITGA4ENST00000397033.7 linkuse as main transcriptc.2883T>G p.His961Gln missense_variant, splice_region_variant 26/281 NM_000885.6 P1P13612-1

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD3 exomes
AF:
0.00000405
AC:
1
AN:
246678
Hom.:
0
AF XY:
0.00000747
AC XY:
1
AN XY:
133858
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:
0.0000329
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000363
AC:
5
AN:
1376402
Hom.:
0
Cov.:
22
AF XY:
0.00000580
AC XY:
4
AN XY:
689838
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:
0.0000119
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000386
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
31
ExAC
AF:
0.00000828
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.12
BayesDel_addAF
Benign
-0.21
T
BayesDel_noAF
Benign
-0.43
CADD
Benign
0.46
DANN
Benign
0.78
DEOGEN2
Benign
0.15
T
Eigen
Benign
-0.62
Eigen_PC
Benign
-0.50
FATHMM_MKL
Benign
0.58
D
LIST_S2
Benign
0.59
T
M_CAP
Benign
0.026
D
MetaRNN
Benign
0.090
T
MetaSVM
Benign
-0.98
T
MutationAssessor
Benign
1.7
L
MutationTaster
Benign
0.50
P
PrimateAI
Benign
0.41
T
PROVEAN
Benign
-0.15
N
REVEL
Benign
0.047
Sift
Benign
0.34
T
Sift4G
Benign
0.18
T
Polyphen
0.031
B
Vest4
0.14
MutPred
0.44
Gain of sheet (P = 0.0477);
MVP
0.83
MPC
0.12
ClinPred
0.067
T
GERP RS
0.58
Varity_R
0.042
gMVP
0.43

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.00011
dbscSNV1_RF
Benign
0.058
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.

Other links and lift over

dbSNP: rs7562325; hg19: chr2-182399097; API