NM_000206.3:c.*307_*308delAA

Variant names:

• chrX-71107427-CTT-C
• NM_000206.3:c.*307_*308delAA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000206.3(IL2RG):​c.*307_*308delAA variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). The gene IL2RG is included in the ClinGen Criteria Specification Registry.

• Frequency: Genomes: not found (cov: 23)
• Consequence: IL2RG NM_000206.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.23
• Publications: 1 publications found

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 Gene-Disease associations (from GenCC):

• T-B+ severe combined immunodeficiency due to gamma chain deficiency

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet, Myriad Women’s Health
• Omenn syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000285171 (HGNC:):

ACMG classification

Specifications for IL2RG are available in the ClinGen Criteria Specification Registry and recommended for reference when assigning criteria.

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000206.3. 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
	IL2RG	NM_000206.3	MANE Select	c.*307_*308delAA		3_prime_UTR	Exon 8 of 8	NP_000197.1	P31785-1
	IL2RG	NM_001438870.1		c.*537_*538delAA		3_prime_UTR	Exon 7 of 7	NP_001425799.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	IL2RG	ENST00000374202.7	TSL:1 MANE Select	c.*307_*308delAA		3_prime_UTR	Exon 8 of 8	ENSP00000363318.3	P31785-1
	ENSG00000285171	ENST00000646505.1		n.925-659_925-658delAA		intron	N/A	ENSP00000496673.1	A0A2R8YE73
	IL2RG	ENST00000276110.6	TSL:2	n.2010_2011delAA		non_coding_transcript_exon	Exon 6 of 6

Frequencies

GnomAD3 genomes Cov.: 23

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 23

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	X-linked severe combined immunodeficiency (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.2
Mutation Taster		=41/59	disease causing

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

Other links and lift over

hg19: chrX-70327277;