rs138659490

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_000211.5(ITGB2):c.1358G>A(p.Ser453Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00065 in 1,611,774 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00066 ( 0 hom. )

Consequence

ITGB2
NM_000211.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.939

Publications

5 publications found

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 Gene-Disease associations (from GenCC):

leukocyte adhesion deficiency 1
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine

ITGB2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.029739767).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGB2	NM_000211.5 link	c.1358G>A	p.Ser453Asn	missense_variant	Exon 11 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.1358G>A	p.Ser453Asn	missense_variant	Exon 11 of 16		NM_000211.5	ENSP00000498780.1		A0A494C0X7

Frequencies

GnomAD3 genomes

AF:

0.000532

AC:

AN:

152254

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000723

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000753

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000838

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000533

AC:

133

AN:

249544

AF XY:

0.000577

show subpopulations

Gnomad AFR exome

AF:

0.000248

Gnomad AMR exome

AF:

0.000376

Gnomad ASJ exome

AF:

0.000498

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000876

Gnomad NFE exome

AF:

0.000787

Gnomad OTH exome

AF:

0.000655

GnomAD4 exome

AF:

0.000663

AC:

967

AN:

1459520

Hom.:

Cov.:

AF XY:

0.000628

AC XY:

456

AN XY:

726148

show subpopulations

African (AFR)

AF:

0.000149

AC:

AN:

33478

American (AMR)

AF:

0.000358

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.000344

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.000821

AC:

AN:

51168

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000783

AC:

871

AN:

1111940

Other (OTH)

AF:

0.000397

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

112

167

223

279

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000532

AC:

AN:

152254

Hom.:

Cov.:

AF XY:

0.000497

AC XY:

AN XY:

74380

show subpopulations

African (AFR)

AF:

0.0000723

AC:

AN:

41468

American (AMR)

AF:

0.000654

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.000753

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000838

AC:

AN:

68046

Other (OTH)

AF:

0.000478

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000749

Hom.:

Bravo

AF:

0.000457

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00151

AC:

ExAC

AF:

0.000486

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.00107

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Leukocyte adhesion deficiency 1

Uncertain:2

Oct 24, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 453 of the ITGB2 protein (p.Ser453Asn). This variant is present in population databases (rs138659490, gnomAD 0.09%), and has an allele count higher than expected for a pathogenic variant. This missense change has been observed in individual(s) with leukocyte adhesion deficiency (PMID: 22134107). ClinVar contains an entry for this variant (Variation ID: 530681). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The asparagine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. Experimental studies have shown that this missense change does not substantially affect ITGB2 function (PMID: 25514840). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Oct 18, 2021

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.075

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.46

CADD

Benign

6.2

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.010

.;.;T;.;.;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.092

LIST_S2

Benign

0.70

.;.;T;.;.;T

M_CAP

Benign

0.062

MetaRNN

Benign

0.030

T;T;T;T;T;T

MetaSVM

Benign

-0.75

PhyloP100

-0.94

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.70

N;N;N;N;N;N

REVEL

Benign

0.13

Sift

Benign

0.42

T;T;T;T;T;T

Sift4G

Benign

0.51

T;T;T;T;T;T

Vest4

0.14

MVP

0.81

MPC

0.31

ClinPred

0.0027

GERP RS

0.55

gMVP

0.69

Mutation Taster

=0/100

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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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rs138659490

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over