rs2069777

chr4-122455282-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000586.4(IL2):c.207+862C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0491 in 151,888 control chromosomes in the GnomAD database, including 256 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.

• Frequency: Genomes: 𝑓 0.049 (256 hom., cov: 32)
• Consequence: IL2 NM_000586.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.609

Genes affected

IL2 (HGNC:6001): (interleukin 2) This gene is a member of the interleukin 2 (IL2) cytokine subfamily which includes IL4, IL7, IL9, IL15, IL21, erythropoietin, and thrombopoietin. The protein encoded by this gene is a secreted cytokine produced by activated CD4+ and CD8+ T lymphocytes, that is important for the proliferation of T and B lymphocytes. The receptor of this cytokine (IL2R) is a heterotrimeric protein complex whose gamma chain is also shared by IL4 and IL7. The expression of this gene in mature thymocytes is monoallelic, which represents an unusual regulatory mode for controlling the precise expression of a single gene. The targeted disruption of a similar gene in mice leads to ulcerative colitis-like disease, which suggests an essential role of this gene in the immune response to antigenic stimuli. [provided by RefSeq, Sep 2020]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0722 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL2	NM_000586.4	c.207+862C>T		intron_variant		ENST00000226730.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL2	ENST00000226730.5	c.207+862C>T		intron_variant		1	NM_000586.4	P1
IL2	ENST00000477645.1	n.297+862C>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.0492 AC: 7460 AN: 151770 Hom.: 256 Cov.: 32

Gnomad AFR AF: 0.0104

Gnomad AMI AF: 0.0417

Gnomad AMR AF: 0.0379

Gnomad ASJ AF: 0.0395

Gnomad EAS AF: 0.00116

Gnomad SAS AF: 0.0315

Gnomad FIN AF: 0.0941

Gnomad MID AF: 0.0475

Gnomad NFE AF: 0.0739

Gnomad OTH AF: 0.0455

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

GnomAD4 genome AF: 0.0491 AC: 7452 AN: 151888 Hom.: 256 Cov.: 32 AF XY: 0.0497 AC XY: 3693 AN XY: 74266

Gnomad4 AFR AF: 0.0104

Gnomad4 AMR AF: 0.0378

Gnomad4 ASJ AF: 0.0395

Gnomad4 EAS AF: 0.00116

Gnomad4 SAS AF: 0.0313

Gnomad4 FIN AF: 0.0941

Gnomad4 NFE AF: 0.0739

Gnomad4 OTH AF: 0.0441

Alfa AF: 0.0634 Hom.: 59

Bravo AF: 0.0428

Asia WGS AF: 0.0140 AC: 48 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
Cadd	Benign	1.3
Dann	Benign	0.48

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: rs2069777; hg19: chr4-123376437;