21-44903482-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PS1_ModeratePM1PM2PM5PP3_ModeratePP5_Very_Strong

The NM_000211.5(ITGB2):c.382G>A(p.Asp128Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 11/19 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely pathogenic in UniProt. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D128Y) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

ITGB2
NM_000211.5 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 7.54

Variant links:

Genes affected

ITGB2 (HGNC:6155): (integrin subunit beta 2) This gene encodes an integrin beta chain, which combines with multiple different alpha chains to form different integrin heterodimers. Integrins are integral cell-surface proteins that participate in cell adhesion as well as cell-surface mediated signalling. The encoded protein plays an important role in immune response and defects in this gene cause leukocyte adhesion deficiency. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

ITGB2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PS1

Transcript NM_000211.5 (ITGB2) is affected with MISSENSE_VARIANT having same AA change as one Pathogenic present in UniProt

PM1

In a strand (size 7) in uniprot entity ITB2_HUMAN there are 9 pathogenic changes around while only 0 benign (100%) in NM_000211.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.934

PP5

Variant 21-44903482-C-T is Pathogenic according to our data. Variant chr21-44903482-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 9467.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr21-44903482-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGB2	NM_000211.5 link	c.382G>A	p.Asp128Asn	missense_variant	Exon 5 of 16	ENST00000652462.1	NP_000202.3	P05107A0A494C0X7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITGB2	ENST00000652462.1 link	c.382G>A	p.Asp128Asn	missense_variant	Exon 5 of 16		NM_000211.5	ENSP00000498780.1		A0A494C0X7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251400

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135886

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461806

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727218

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Leukocyte adhesion deficiency 1

Pathogenic:2

Sep 23, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

ClinVar contains an entry for this variant (Variation ID: 9467). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on ITGB2 protein function. This variant disrupts the p.Asp128 amino acid residue in ITGB2. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 20549317, 25514840, 28445705, 32279896). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. For these reasons, this variant has been classified as Pathogenic. This missense change has been observed in individual(s) with leukocyte adhesion deficiency (PMID: 1590804, 24338230, 26497373; Invitae). This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 128 of the ITGB2 protein (p.Asp128Asn). This variant is present in population databases (rs137852615, gnomAD 0.002%). -

May 15, 1992

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not provided

Pathogenic:1

Apr 27, 2023

GeneDx

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 34310689, 1590804, 25514840, 28445705, 26497373, 12488604, 29371071, 36696755, 24338230, 22134107) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.26

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.83

.;.;.;.;.;.;.;D

Eigen

Pathogenic

0.83

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.97

.;.;.;.;D;D;D;D

M_CAP

Pathogenic

0.74

MetaRNN

Pathogenic

0.93

D;D;D;D;D;D;D;D

MetaSVM

Pathogenic

1.0

PrimateAI

Uncertain

0.72

PROVEAN

Uncertain

-4.3

D;D;D;D;D;D;D;D

REVEL

Pathogenic

0.94

Sift

Pathogenic

0.0

D;D;D;D;D;D;D;D

Sift4G

Benign

0.075

T;T;T;T;T;D;.;D

Vest4

0.98

MVP

0.97

MPC

0.98

ClinPred

0.99

GERP RS

4.6

gMVP

0.92

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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