chr2-181534370-T-A

Variant names:

• chr2-181534370-T-A
• rs7562325
• NM_000885.6:c.2883T>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000885.6(ITGA4):​c.2883T>A​(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 0.00000145 in 1,376,400 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 𝑓: 0.0000015 (0 hom.)
• Consequence: ITGA4 NM_000885.6 missense, splice_region
• Scores: Splicing: ADA: 0.00008657
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.518

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.094147086).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGA4	NM_000885.6	c.2883T>A	p.His961Gln	missense_variant, splice_region_variant	Exon 26 of 28	ENST00000397033.7	NP_000876.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITGA4	ENST00000397033.7	c.2883T>A	p.His961Gln	missense_variant, splice_region_variant	Exon 26 of 28	1	NM_000885.6	ENSP00000380227.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000145 AC: 2 AN: 1376400 Hom.: 0 Cov.: 22 AF XY: 0.00000290 AC XY: 2 AN XY: 689836

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.66e-7

Gnomad4 OTH exome AF: 0.0000174

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	0.58
DANN	Benign	0.81
DEOGEN2	Benign	0.15	T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.50
FATHMM_MKL	Benign	0.57	D
LIST_S2	Benign	0.59	T
M_CAP	Benign	0.026	D
MetaRNN	Benign	0.094	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.7	L
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		0.16	T
GERP RS		0.58
Varity_R		0.042
gMVP		0.43

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000087
dbscSNV1_RF	Benign	0.016
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

Other links and lift over

dbSNP: rs7562325; hg19: chr2-182399097;