2-186602022-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_002210.5(ITGAV):c.187C>T(p.Arg63Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000542 in 1,604,820 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

ITGAV
NM_002210.5 missense, splice_region

Scores

Splicing: ADA: 0.002526

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.27

Variant links:

Genes affected

ITGAV (HGNC:6150): (integrin subunit alpha V) The product of this gene belongs to the integrin alpha chain family. Integrins are heterodimeric integral membrane proteins composed of an alpha subunit and a beta subunit that function in cell surface adhesion and signaling. The encoded preproprotein is proteolytically processed to generate light and heavy chains that comprise the alpha V subunit. This subunit associates with beta 1, beta 3, beta 5, beta 6 and beta 8 subunits. The heterodimer consisting of alpha V and beta 3 subunits is also known as the vitronectin receptor. This integrin may regulate angiogenesis and cancer progression. Alternative splicing results in multiple transcript variants. Note that the integrin alpha 5 and integrin alpha V subunits are encoded by distinct genes. [provided by RefSeq, Oct 2015]

ITGAV links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 16 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITGAV	NM_002210.5 link	c.187C>T	p.Arg63Trp	missense_variant, splice_region_variant	Exon 2 of 30	ENST00000261023.8	NP_002201.2	P06756-1L7RXH0
ITGAV	NM_001145000.3 link	c.187C>T	p.Arg63Trp	missense_variant, splice_region_variant	Exon 2 of 28		NP_001138472.2	P06756-2
ITGAV	NM_001144999.3 link	c.49C>T	p.Arg17Trp	missense_variant, splice_region_variant	Exon 2 of 30		NP_001138471.2	P06756-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITGAV	ENST00000261023.8 link	c.187C>T	p.Arg63Trp	missense_variant, splice_region_variant	Exon 2 of 30	1	NM_002210.5	ENSP00000261023.3		P06756-1

Frequencies

GnomAD3 genomes

AF:

0.000105

AC:

AN:

152050

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000217

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000286

AC:

AN:

245096

Hom.:

AF XY:

0.0000227

AC XY:

AN XY:

132390

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.0000303

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:

0.0000358

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000489

AC:

AN:

1452770

Hom.:

Cov.:

AF XY:

0.0000512

AC XY:

AN XY:

722324

show subpopulations

Gnomad4 AFR exome

AF:

0.0000606

Gnomad4 AMR exome

AF:

0.0000231

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.0000119

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000577

Gnomad4 OTH exome

AF:

0.0000333

GnomAD4 genome

AF:

0.000105

AC:

AN:

152050

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74256

show subpopulations

Gnomad4 AFR

AF:

0.000217

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000921

Hom.:

Bravo

AF:

0.000125

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 18, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.187C>T (p.R63W) alteration is located in exon 2 (coding exon 2) of the ITGAV gene. This alteration results from a C to T substitution at nucleotide position 187, causing the arginine (R) at amino acid position 63 to be replaced by a tryptophan (W). 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

0.27

BayesDel_addAF

Benign

0.0034

BayesDel_noAF

Uncertain

0.12

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.38

T;.;.

Eigen

Uncertain

0.20

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.81

LIST_S2

Uncertain

0.90

D;D;T

M_CAP

Uncertain

0.25

MetaRNN

Uncertain

0.53

D;D;D

MetaSVM

Uncertain

0.29

MutationAssessor

Benign

1.7

L;L;.

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

-1.5

N;N;N

REVEL

Uncertain

0.37

Sift

Uncertain

0.010

D;D;D

Sift4G

Uncertain

0.018

D;D;D

Polyphen

1.0

D;D;.

Vest4

0.74

MVP

0.98

MPC

0.68

ClinPred

0.67

GERP RS

3.8

Varity_R

0.19

gMVP

0.56

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0025

dbscSNV1_RF

Benign

0.080

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