Genetic Variant ITGA9:p.Thr227Met (chr3-37503245-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_002207.3(ITGA9):c.680C>T(p.Thr227Met) variant causes a missense change. The variant allele was found at a frequency of 0.00017 in 1,613,950 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T227K) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00043 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 3 hom. )

Consequence

ITGA9
NM_002207.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.52

Publications

2 publications found

Variant links:

Genes affected

ITGA9 (HGNC:6145): (integrin subunit alpha 9) This gene encodes an alpha integrin. Integrins are heterodimeric integral membrane glycoproteins composed of an alpha chain and a beta chain that mediate cell-cell and cell-matrix adhesion. The protein encoded by this gene, when bound to the beta 1 chain, forms an integrin that is a receptor for VCAM1, cytotactin and osteopontin. Expression of this gene has been found to be upregulated in small cell lung cancers. [provided by RefSeq, Jul 2008]

ITGA9 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.19439158).

BS2

High Homozygotes in GnomAdExome4 at 3 gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002207.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ITGA9	NM_002207.3	MANE Select	c.680C>T	p.Thr227Met	missense	Exon 6 of 28	NP_002198.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ITGA9	ENST00000264741.10	TSL:1 MANE Select	c.680C>T	p.Thr227Met	missense	Exon 6 of 28	ENSP00000264741.5	Q13797
ITGA9	ENST00000422441.5	TSL:1	c.680C>T	p.Thr227Met	missense	Exon 6 of 16	ENSP00000397258.1	E9PDS3
ITGA9	ENST00000921363.1		c.680C>T	p.Thr227Met	missense	Exon 6 of 28	ENSP00000591422.1

Frequencies

GnomAD3 genomes

AF:

0.000427

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000966

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00354

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000829

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000362

AC:

AN:

251360

AF XY:

0.000368

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00121

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000143

AC:

209

AN:

1461750

Hom.:

Cov.:

AF XY:

0.000169

AC XY:

123

AN XY:

727176

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33472

American (AMR)

AF:

0.000961

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000504

AC:

AN:

39696

South Asian (SAS)

AF:

0.000916

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000639

AC:

AN:

1111908

Other (OTH)

AF:

0.000199

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000427

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.000618

AC XY:

AN XY:

74402

show subpopulations

African (AFR)

AF:

0.0000963

AC:

AN:

41526

American (AMR)

AF:

0.00353

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.000830

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000130

Hom.:

Bravo

AF:

0.000427

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000321

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.052

BayesDel_noAF

Uncertain

0.11

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.90

M_CAP

Uncertain

0.091

MetaRNN

Benign

0.19

MetaSVM

Benign

-0.30

MutationAssessor

Uncertain

2.1

PhyloP100

6.5

PrimateAI

Uncertain

0.73

PROVEAN

Uncertain

-3.7

REVEL

Uncertain

0.33

Sift

Uncertain

0.010

Sift4G

Uncertain

0.0050

Polyphen

1.0

Vest4

0.74

MVP

0.70

MPC

0.77

ClinPred

0.10

GERP RS

5.8

Varity_R

0.26

gMVP

0.76

Mutation Taster

=91/9

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over