2-213013851-T-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001387220.1(IKZF2):c.796A>G(p.Ile266Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,612,046 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

IKZF2
NM_001387220.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.16

Publications

0 publications found

Variant links:

Genes affected

IKZF2 (HGNC:13177): (IKAROS family zinc finger 2) This gene encodes a member of the Ikaros family of zinc-finger proteins. Three members of this protein family (Ikaros, Aiolos and Helios) are hematopoietic-specific transcription factors involved in the regulation of lymphocyte development. This protein forms homo- or hetero-dimers with other Ikaros family members, and is thought to function predominantly in early hematopoietic development. Multiple transcript variants encoding different isoforms have been found for this gene, but the biological validity of some variants has not been determined. [provided by RefSeq, Jul 2008]

IKZF2 Gene-Disease associations (from GenCC):

HELIOS deficiency
Inheritance: SD, AR Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
hearing loss disorder
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
immunodeficiency disease
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

IKZF2 links:

ENSG00000273118 (HGNC:):

ENSG00000273118 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.22252351).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IKZF2	NM_001387220.1 link	c.796A>G	p.Ile266Val	missense_variant	Exon 8 of 9	ENST00000434687.6	NP_001374149.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IKZF2	ENST00000434687.6 link	c.796A>G	p.Ile266Val	missense_variant	Exon 8 of 9	5	NM_001387220.1	ENSP00000412869.1		Q9UKS7-1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

152010

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250932

AF XY:

0.00000737

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000137

AC:

AN:

1460036

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726332

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33390

American (AMR)

AF:

0.0000224

AC:

AN:

44664

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26044

East Asian (EAS)

AF:

0.00

AC:

AN:

39656

South Asian (SAS)

AF:

0.00

AC:

AN:

86156

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5754

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110680

Other (OTH)

AF:

0.00

AC:

AN:

60298

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000132

AC:

AN:

152010

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74250

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41428

American (AMR)

AF:

0.00

AC:

AN:

15240

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67910

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000331

Hom.:

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 22, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.796A>G (p.I266V) alteration is located in exon 7 (coding exon 6) of the IKZF2 gene. This alteration results from a A to G substitution at nucleotide position 796, causing the isoleucine (I) at amino acid position 266 to be replaced by a valine (V). 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

0.16

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.45

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

.;.;T;.

Eigen

Uncertain

0.23

Eigen_PC

Uncertain

0.34

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.93

D;D;D;D

M_CAP

Benign

0.0087

MetaRNN

Benign

0.22

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.8

.;.;L;.

PhyloP100

3.2

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.82

.;N;N;N

REVEL

Benign

0.13

Sift

Uncertain

0.0040

.;D;D;D

Sift4G

Benign

0.17

T;T;T;T

Polyphen

0.012, 0.010

.;.;B;B

Vest4

0.28

MVP

0.25

MPC

0.22

ClinPred

0.36

GERP RS

5.5

Varity_R

0.21

gMVP

0.40

Mutation Taster

=86/14

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

2-213013851-T-C

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