IL13

Chr 5

interleukin 13

Also known as: IL-13, P600

This gene encodes an immunoregulatory cytokine produced primarily by activated Th2 cells. This cytokine is involved in several stages of B-cell maturation and differentiation. It up-regulates CD23 and MHC class II expression, and promotes IgE isotype switching of B cells. This cytokine down-regulates macrophage activity, thereby inhibits the production of pro-inflammatory cytokines and chemokines. This cytokine is found to be critical to the pathogenesis of allergen-induced asthma but operates through mechanisms independent of IgE and eosinophils. This gene, IL3, IL5, IL4, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL4. [provided by RefSeq, Jul 2008]

GeneReviewsResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtAllergic rhinitis
12
Active trials
168
Pubs (1 yr)
P/LP submissions
P/LP missense
1.63
LOEUF
Multiple*
Mechanism· predicted
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GeneReview available — IL13
Authoritative clinical overview · Recommended first read
Open GeneReview ↗
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.63LOEUF
pLI 0.014
Z-score 0.62
OE 0.68 (0.311.63)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
0.37Z-score
OE missense 0.89 (0.731.07)
75 obs / 84.7 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.68 (0.311.63)
00.351.4
Missense OE?0.89 (0.731.07)
00.61.4
Synonymous OE?0.81
01.21.6
LoF obs/exp: 3 / 4.4Missense obs/exp: 75 / 84.7Syn Z: 0.91

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

IL13 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

Atopic DermatitisEczema

Defining the Skin and Blood Biomarkers of Pediatric Atopic Dermatitis

ACTIVE NOT RECRUITING
NCT01782703Northwestern UniversityStarted 2013-01
Upper Respiratory Tract Infections

Study of the Preventive Effects and Mechanisms of Yeast β-Glucan on Upper Respiratory Tract Infections

NOT YET RECRUITING
NCT07085858Phase NALanZhou UniversityStarted 2025-07-25
yeast β-glucanplacebo
Non-Allergic Rhinitis With Eosinophilia Syndrome

Efficacy and Safety of Stapokibart in Non-Allergic Rhinitis With Eosinophilia Syndrome

NOT YET RECRUITING
NCT07240376Phase NAHuazhong University of Science and TechnologyStarted 2025-11-25
Stapokibart (CM310)Placebo
DysferlinopathyMiyoshi MyopathyLGMDR2

Clinical, Immunological, Morphological and Genetic Characteristics of Patients With Dysferlinopathy (LGMD R2) in the RF

ENROLLING BY INVITATION
NCT04824040Artgen BiotechStarted 2020-01-15
Metastatic Malignant Solid NeoplasmMetastatic MelanomaPathologic Stage IIIC Cutaneous Melanoma AJCC v8

Gene Modified Immune Cells After Conditioning Regimen for the Treatment of Stage IIIC or IV Melanoma or Metastatic Solid Tumors

RECRUITING
NCT04119024Phase PHASE1Anusha KalbasiStarted 2025-10-07
BiopsyBiospecimen CollectionComputed Tomography
Porphyria, Acute Intermittent

Clinical Research on Acute Intermittent Porphyria and the Use of Carbohydrate-Rich Diet as a Treatment

RECRUITING
NCT06273644Phase NANordlandssykehuset HFStarted 2024-01-27
Carbohydrates
Asthma

Genetic Association With Various Severities, Phenotypes and Endotypes of Asthma.

RECRUITING
NCT06196034Chinese University of Hong KongStarted 2024-03-01
No intervention
Atopic DermatitisAtopicAllergic Diseases

Dietary Intervention on Atopy

RECRUITING
NCT06547372Phase NANational University of SingaporeStarted 2024-05-10
Dietary Intervention on Atopy
AsthmaAllergic RhinitisCat Allergy

Viral Mucosal Reprogramming

RECRUITING
NCT05331170Phase PHASE2The University of Texas Medical Branch, GalvestonStarted 2023-04-27
Research Grade RG-RV
Glioma of Brain

Glioma Microenvironment an Exploratory Study

ACTIVE NOT RECRUITING
NCT03189420Hospital Sirio-LibanesStarted 2016-10
Tumor resection
Type1diabetes

Crosstalk Between Mucosal-Associated Invariant T (MAIT) Cells and the Gut Microbiota and Mucosa in the Development of Type 1 Diabetes in Children

RECRUITING
NCT05054361Institut National de la Santé Et de la Recherche Médicale, FranceStarted 2022-01-01
MAIT cells analysisMAIT cytokines production analysisLactulose/Mannitol Test
Multiple Myeloma (MM)

Moving Forward With Myeloma: A Lifestyle Intervention for Individuals With Multiple Myeloma

RECRUITING
NCT07236502Phase NAMedical College of WisconsinStarted 2026-01-30
Immediate interventionWaitlist