rs2227282

chr5-132677487-C-G

Variant summary

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

The NM_000589.4(IL4):c.184-2227C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.515 in 152,122 control chromosomes in the GnomAD database, including 25,447 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 0.52 (25447 hom., cov: 32)
• Consequence: IL4 NM_000589.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.398

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 -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.733 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL4	NM_000589.4	c.184-2227C>G		intron_variant		ENST00000231449.7
IL4	NM_001354990.2	c.184-294C>G		intron_variant
IL4	NM_172348.3	c.136-2227C>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL4	ENST00000231449.7	c.184-2227C>G		intron_variant		1	NM_000589.4	P1
IL4	ENST00000350025.2	c.136-2227C>G		intron_variant		1
IL4	ENST00000622422.1	c.184-294C>G		intron_variant		1
IL4	ENST00000495905.1	n.150-2227C>G		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.515 AC: 78344 AN: 152004 Hom.: 25451 Cov.: 32

Gnomad AFR AF: 0.145

Gnomad AMI AF: 0.909

Gnomad AMR AF: 0.523

Gnomad ASJ AF: 0.667

Gnomad EAS AF: 0.158

Gnomad SAS AF: 0.643

Gnomad FIN AF: 0.539

Gnomad MID AF: 0.614

Gnomad NFE AF: 0.739

Gnomad OTH AF: 0.564

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

GnomAD4 genome AF: 0.515 AC: 78344 AN: 152122 Hom.: 25447 Cov.: 32 AF XY: 0.507 AC XY: 37735 AN XY: 74362

Gnomad4 AFR AF: 0.144

Gnomad4 AMR AF: 0.523

Gnomad4 ASJ AF: 0.667

Gnomad4 EAS AF: 0.159

Gnomad4 SAS AF: 0.644

Gnomad4 FIN AF: 0.539

Gnomad4 NFE AF: 0.739

Gnomad4 OTH AF: 0.563

Alfa AF: 0.604 Hom.: 3867

Bravo AF: 0.489

Asia WGS AF: 0.414 AC: 1440 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
Cadd	Benign	4.4
Dann	Benign	0.39

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: rs2227282; hg19: chr5-132013179; COSMIC: COSV51502842;