X-71107785-T-C

Position:

chrX-71107785-T-C

Variant summary

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

This summary comes from the ClinGen Evidence Repository: NM_000206.3(IL2RG):c.1061A>G is a missense variant predicted to cause substitution of Histidine by Arginine at amino acid 354 (p.His354Arg). The filtering allele frequency (the upper threshold of the 95% CI of 7/30447) of the c.1061A>G variant in IL2RG is 0.0001216 for East Asian chromosomes by gnomAD v4, which is lower than the ClinGen SCID VCEP threshold (<0.000124 ) for PM2_Supporting. However, 4 hemizygotes were reported (PM2 not met).The variant is observed in 4 hemizygotes in gnomAD v4 (BS2_Strong). To our knowledge, this variant has not been reported in the literature in individuals affected with IL2RG related conditions or in functional studies. In summary, this variant meets the criteria to be classified as likely benign variant for X-linked severe combined immunodeficiency due to IL2RG deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen SCID VCEP: BS2 (VCEP specifications version 1). LINK:https://erepo.genome.network/evrepo/ui/classification/CA10443761/MONDO:0010315/129

Frequency

Genomes: 𝑓 0.0 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.000011 ( 0 hom. 4 hem. )

Failed GnomAD Quality Control

Consequence

IL2RG
NM_000206.3 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:2B:2

Conservation

PhyloP100: 1.37

Variant links:

Genes affected

IL2RG (HGNC:6010): (interleukin 2 receptor subunit gamma) The protein encoded by this gene is an important signaling component of many interleukin receptors, including those of interleukin -2, -4, -7 and -21, and is thus referred to as the common gamma chain. Mutations in this gene cause X-linked severe combined immunodeficiency (XSCID), as well as X-linked combined immunodeficiency (XCID), a less severe immunodeficiency disorder. [provided by RefSeq, Mar 2010]

IL2RG links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IL2RG	NM_000206.3 linkuse as main transcript	c.1061A>G	p.His354Arg	missense_variant	8/8	ENST00000374202.7	NP_000197.1
IL2RG	XM_047442089.1 linkuse as main transcript	c.*181A>G		3_prime_UTR_variant	7/7		XP_047298045.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IL2RG	ENST00000374202.7 linkuse as main transcript	c.1061A>G	p.His354Arg	missense_variant	8/8	1	NM_000206.3	ENSP00000363318	P1	P31785-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

112438

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34604

FAILED QC

Gnomad AFR

AF:

0.00

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

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

148907

Hom.:

AF XY:

0.0000217

AC XY:

AN XY:

46051

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000934

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000844

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000113

AC:

AN:

1063540

Hom.:

Cov.:

AF XY:

0.0000117

AC XY:

AN XY:

343020

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000678

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000234

Gnomad4 SAS exome

AF:

0.0000615

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

112438

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34604

Gnomad4 AFR

AF:

0.00

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000302

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:2Benign:2

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

X-linked severe combined immunodeficiency

Uncertain:1Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Aug 18, 2023	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 14, 2021	- -
Likely benign, reviewed by expert panel	curation	ClinGen Severe Combined Immunodeficiency Variant Curation Expert Panel, ClinGen	Jan 26, 2024	NM_000206.3(IL2RG):c.1061A>G is a missense variant predicted to cause substitution of Histidine by Arginine at amino acid 354 (p.His354Arg). The filtering allele frequency (the upper threshold of the 95% CI of 7/30447) of the c.1061A>G variant in IL2RG is 0.0001216 for East Asian chromosomes by gnomAD v4, which is lower than the ClinGen SCID VCEP threshold (<0.000124 ) for PM2_Supporting. However, 4 hemizygotes were reported (PM2 not met).The variant is observed in 4 hemizygotes in gnomAD v4 (BS2_Strong). To our knowledge, this variant has not been reported in the literature in individuals affected with IL2RG related conditions or in functional studies. In summary, this variant meets the criteria to be classified as likely benign variant for X-linked severe combined immunodeficiency due to IL2RG deficiency based on the ACMG/AMP criteria applied, as specified by the ClinGen SCID VCEP: BS2 (VCEP specifications version 1). -

Combined immunodeficiency, X-linked

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Jul 14, 2021

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.078

BayesDel_addAF

Uncertain

0.11

BayesDel_noAF

Uncertain

0.13

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.60

D;.;.

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.75

T;T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.17

T;T;T

MetaSVM

Uncertain

0.48

MutationAssessor

Uncertain

2.2

M;.;.

MutationTaster

Benign

0.97

N;N;N

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.6

N;D;N

REVEL

Uncertain

0.49

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;D;.

Vest4

0.11

MutPred

0.32

Gain of loop (P = 0.0435);.;.;

MVP

0.97

MPC

1.0

ClinPred

0.23

GERP RS

3.1

Varity_R

0.23

gMVP

0.69

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