21-44890000-G-A

Position:

chr21-44890000-G-A

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000211.5(ITGB2):c.1635C>T(p.Asn545=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00205 in 1,613,360 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0014 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0021 ( 17 hom. )

Consequence

ITGB2
NM_000211.5 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -4.64

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 Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BP6

Variant 21-44890000-G-A is Benign according to our data. Variant chr21-44890000-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 530688.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr21-44890000-G-A is described in Lovd as [Likely_benign]. Variant chr21-44890000-G-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-4.64 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00144 (220/152322) while in subpopulation SAS AF= 0.00601 (29/4828). AF 95% confidence interval is 0.0043. There are 0 homozygotes in gnomad4. There are 115 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 17 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITGB2	NM_000211.5 linkuse as main transcript	c.1635C>T	p.Asn545=	synonymous_variant	12/16	ENST00000652462.1	NP_000202.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITGB2	ENST00000652462.1 linkuse as main transcript	c.1635C>T	p.Asn545=	synonymous_variant	12/16		NM_000211.5	ENSP00000498780	P1

Frequencies

GnomAD3 genomes

AF:

0.00145

AC:

220

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000362

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000785

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00600

Gnomad FIN

AF:

0.000847

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00216

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.00224

AC:

562

AN:

250764

Hom.:

AF XY:

0.00237

AC XY:

322

AN XY:

135720

show subpopulations

Gnomad AFR exome

AF:

0.000371

Gnomad AMR exome

AF:

0.000665

Gnomad ASJ exome

AF:

0.00129

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.00503

Gnomad FIN exome

AF:

0.00102

Gnomad NFE exome

AF:

0.00291

Gnomad OTH exome

AF:

0.00212

GnomAD4 exome

AF:

0.00212

AC:

3094

AN:

1461038

Hom.:

Cov.:

AF XY:

0.00223

AC XY:

1623

AN XY:

726834

show subpopulations

Gnomad4 AFR exome

AF:

0.000627

Gnomad4 AMR exome

AF:

0.000648

Gnomad4 ASJ exome

AF:

0.000918

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.00580

Gnomad4 FIN exome

AF:

0.00110

Gnomad4 NFE exome

AF:

0.00208

Gnomad4 OTH exome

AF:

0.00232

GnomAD4 genome

AF:

0.00144

AC:

220

AN:

152322

Hom.:

Cov.:

AF XY:

0.00154

AC XY:

115

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.000361

Gnomad4 AMR

AF:

0.000784

Gnomad4 ASJ

AF:

0.00115

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00601

Gnomad4 FIN

AF:

0.000847

Gnomad4 NFE

AF:

0.00216

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.00210

Hom.:

Bravo

AF:

0.00142

Asia WGS

AF:

0.00231

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -
Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

Leukocyte adhesion deficiency 1

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

ITGB2-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jun 24, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

0.15

DANN

Benign

0.55

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.10

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