rs2243308

Positions:

• chr5-132678561-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_000589.4(IL4):​c.184-1153C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00231 in 152,196 control chromosomes in the GnomAD database, including 1 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 0.0023 (1 hom., cov: 32)
• Consequence: IL4 NM_000589.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.84

Genes affected

IL4 (HGNC:6014): (interleukin 4) The protein encoded by this gene is a pleiotropic cytokine produced by activated T cells. This cytokine is a ligand for interleukin 4 receptor. The interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. STAT6, a signal transducer and activator of transcription, has been shown to play a central role in mediating the immune regulatory signal of this cytokine. This gene, IL3, IL5, IL13, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL13. This gene, IL13 and IL5 are found to be regulated coordinately by several long-range regulatory elements in an over 120 kilobase range on the chromosome. IL4 is considered an important cytokine for tissue repair, counterbalancing the effects of proinflammatory type 1 cytokines, however, it also promotes allergic airway inflammation. Moreover, IL-4, a type 2 cytokine, mediates and regulates a variety of human host responses such as allergic, anti-parasitic, wound healing, and acute inflammation. This cytokine has been reported to promote resolution of neutrophil-mediated acute lung injury. In an allergic response, IL-4 has an essential role in the production of allergen-specific immunoglobin (Ig) E. This pro-inflammatory cytokine has been observed to be increased in COVID-19 (Coronavirus disease 2019) patients, but is not necessarily associated with severe COVID-19 pathology. Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BS2: High AC in GnomAd4 at 352 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
IL4	NM_000589.4	c.184-1153C>T		intron_variant		ENST00000231449.7	NP_000580.1
IL4	NM_001354990.2	c.284+680C>T		intron_variant			NP_001341919.1
IL4	NM_172348.3	c.136-1153C>T		intron_variant			NP_758858.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
IL4	ENST00000231449.7	c.184-1153C>T		intron_variant		1	NM_000589.4	ENSP00000231449	P1
IL4	ENST00000350025.2	c.136-1153C>T		intron_variant		1		ENSP00000325190
IL4	ENST00000622422.1	c.284+680C>T		intron_variant		1		ENSP00000480581
IL4	ENST00000495905.1	n.150-1153C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.00231 AC: 352 AN: 152078 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000507

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00340

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000623

Gnomad FIN AF: 0.000946

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.00376

Gnomad OTH AF: 0.00382

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

GnomAD4 genome AF: 0.00231 AC: 352 AN: 152196 Hom.: 1 Cov.: 32 AF XY: 0.00218 AC XY: 162 AN XY: 74392

Gnomad4 AFR AF: 0.000506

Gnomad4 AMR AF: 0.00340

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000624

Gnomad4 FIN AF: 0.000946

Gnomad4 NFE AF: 0.00376

Gnomad4 OTH AF: 0.00378

Alfa AF: 0.00238 Hom.: 0

Bravo AF: 0.00248

Asia WGS AF: 0.000866 AC: 3 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	0.22
DANN	Benign	0.41

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: rs2243308; hg19: chr5-132014253;