Genetic Variant ITGAX:p.Thr186Asn (chr16-31359826-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_000887.5(ITGAX):c.557C>A(p.Thr186Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000805 in 1,614,068 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

ITGAX
NM_000887.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.58

Variant links:

Genes affected

ITGAX (HGNC:6152): (integrin subunit alpha X) This gene encodes the integrin alpha X chain protein. Integrins are heterodimeric integral membrane proteins composed of an alpha chain and a beta chain. This protein combines with the beta 2 chain (ITGB2) to form a leukocyte-specific integrin referred to as inactivated-C3b (iC3b) receptor 4 (CR4). The alpha X beta 2 complex seems to overlap the properties of the alpha M beta 2 integrin in the adherence of neutrophils and monocytes to stimulated endothelium cells, and in the phagocytosis of complement coated particles. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2013]

ITGAX links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGAX	NM_000887.5 link	c.557C>A	p.Thr186Asn	missense_variant	Exon 6 of 30	ENST00000268296.9	NP_000878.2	P20702

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ITGAX	ENST00000268296.9 link	c.557C>A	p.Thr186Asn	missense_variant	Exon 6 of 30	1	NM_000887.5	ENSP00000268296.5	P20702
ITGAX	ENST00000562522.2 link	c.557C>A	p.Thr186Asn	missense_variant	Exon 6 of 31	1		ENSP00000454623.1	H3BN02
ITGAX	ENST00000571644.1 link	n.-111C>A		upstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251366

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135868

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.0000578

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.0000447

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:

0.00000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000340

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 07, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.557C>A (p.T186N) alteration is located in exon 6 (coding exon 6) of the ITGAX gene. This alteration results from a C to A substitution at nucleotide position 557, causing the threonine (T) at amino acid position 186 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.078

BayesDel_noAF

Benign

-0.11

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.68

D;.

Eigen

Uncertain

0.55

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.78

T;T

M_CAP

Benign

0.037

MetaRNN

Uncertain

0.50

D;D

MetaSVM

Pathogenic

0.95

MutationAssessor

Pathogenic

3.6

H;.

PrimateAI

Benign

0.38

PROVEAN

Pathogenic

-4.5

D;D

REVEL

Uncertain

0.44

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0070

D;D

Polyphen

1.0

D;.

Vest4

0.54

MutPred

0.65

Loss of phosphorylation at T186 (P = 0.0436);Loss of phosphorylation at T186 (P = 0.0436);

MVP

0.82

MPC

0.82

ClinPred

0.92

GERP RS

4.8

Varity_R

0.82

gMVP

0.80

Splicing

Name

Calibrated prediction

Score

Prediction

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.

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