chrX-71110615-A-G

Position:

• chrX-71110615-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2 PM5 PP3_Strong PP5

The NM_000206.3(IL2RG):​c.343T>C​(p.Cys115Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C115F) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 23)
• Consequence: IL2RG NM_000206.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.84

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.994
• PP5: Variant X-71110615-A-G is Pathogenic according to our data. Variant chrX-71110615-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 10025.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IL2RG	NM_000206.3	c.343T>C	p.Cys115Arg	missense_variant	3/8	ENST00000374202.7	NP_000197.1
IL2RG	XM_047442089.1	c.343T>C	p.Cys115Arg	missense_variant	3/7		XP_047298045.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IL2RG	ENST00000374202.7	c.343T>C	p.Cys115Arg	missense_variant	3/8	1	NM_000206.3	ENSP00000363318	P1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

X-linked severe combined immunodeficiency Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Nov 21, 1996

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.69	D
BayesDel_noAF	Pathogenic	0.75
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.98	D;.;D
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Benign	0.72	T;T;T
M_CAP	Pathogenic	0.94	D
MetaRNN	Pathogenic	0.99	D;D;D
MetaSVM	Uncertain	0.76	D
MutationAssessor	Pathogenic	3.2	M;.;.
MutationTaster	Benign	1.0	A;A
PrimateAI	Benign	0.43	T
PROVEAN	Pathogenic	-12	D;D;D
REVEL	Pathogenic	0.88
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0	D;.;.
Polyphen		1.0	D;.;.
Vest4		0.99
MutPred		0.93		Gain of disorder (P = 0.0084);.;.;
MVP		1.0
MPC		2.1
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.99
gMVP		1.0

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

Other links and lift over

dbSNP: rs111033622; hg19: chrX-70330465;