Protein / target
Interleukin-5
Protein at a glance
Biological role
Interleukin-5 receptor binding
Strongest disease association
Asthma
Therapeutic position
Established drug target
Research activity
Emerging research
Derived from structured UniProt, Open Targets and literature data on this page.
Protein profile
Canonical identity and biological annotation from UniProt.
Function overview
Homodimeric cytokine expressed predominantly by T-lymphocytes and NK cells that plays an important role in the survival, differentiation, and chemotaxis of eosinophils.
View complete UniProt function annotationHide complete annotation
Homodimeric cytokine expressed predominantly by T-lymphocytes and NK cells that plays an important role in the survival, differentiation, and chemotaxis of eosinophils (PubMed:2653458, PubMed:9010276). Also acts on activated and resting B-cells to induce immunoglobulin production, growth, and differentiation (By similarity). Mechanistically, exerts its biological effects through a receptor composed of IL5RA subunit and the cytokine receptor common subunit beta/CSF2RB (PubMed:1495999, PubMed:22528658). Binding to the receptor leads to activation of various kinases including LYN, SYK and JAK2 and thereby propagates signals through the RAS-MAPK and JAK-STAT5 pathways respectively (PubMed:7613138)
Subcellular location
Domains and Gene Ontology detail (16)Hide
Gene Ontology
- Cextracellular region
- Cextracellular space
- Cplasma membrane
- Fcytokine activity
- Fgrowth factor activity
- Finterleukin-5 receptor binding
- Pcell surface receptor signaling pathway via JAK-STAT
- Pimmune response
- Pinflammatory response
- Pinterleukin-5-mediated signaling pathway
- Ppositive regulation of B cell proliferation
- Ppositive regulation of eosinophil differentiation
Biological roles
What this protein does, drawn together from its UniProt function, Gene Ontology terms and Reactome pathways.
View supporting evidenceHide supporting evidence
Cell migration
- ·Homodimeric cytokine expressed predominantly by T-lymphocytes and NK cells that plays an…
Immune signalling
- ·Homodimeric cytokine expressed predominantly by T-lymphocytes and NK cells that plays an…
- ·cytokine activity
- ·interleukin-5 receptor binding
- ·immune response
Concepts derived from UniProt GO Reactome — each badge above shows which sources supported that role.
Approved medicines with mapped indications
Approved therapies targeting this protein, grouped by what they are approved to treat — the disease-first view of the medicines below. Relationships come from the canonical approved-indication graph (ChEMBL phase-4), the same source as the drug cards.
3 medicines meet Open Targets' target-level approved-medicine definition; the 1 shown here are those on this page with a canonical approved disease indication in the graph. Approved indications from ChEMBL (phase-4), via the canonical drug→disease graph.
Drugs targeting this protein
How approved and investigational drugs engage this protein — mechanism and action type, direct vs complex targeting, and how broadly each acts across other targets. A drug-first view (the section above groups the approved ones disease-first); direct binders with few recorded targets are listed first.
Interleukin-5 inhibitor
Indicated for Asthma, Chronic Disease, Lung Diseases, Obstructive
Interleukin-5 inhibitor
ChEMBL mechanism, action type, target identity and approved indications. Open Targets clinical status.
Translational evidence
Why this target matters therapeutically, strongest evidence first. Disease associations are gene-level (via the gene that encodes this protein) and open into the full confidence synthesis; the development universe, tractability and safety annotations are target-level, from Open Targets.
Strongest disease associations · via encoding gene IL5
Gene-level evidence surfaced through the gene IL5that encodes this protein — not a direct protein–disease relationship. Ranked by Forefront's causal-directness weighting, so genetically- and clinically-evidenced diseases lead over ones that merely share the literature.
View evidence synthesis (5)Hide
The evidence agreement range shows how closely the independent evidence families agree — it is not a statistical confidence interval, and nothing here is fitted to outcome data. Derived from Open Targets evidence types under Forefront weighting; the per-type scores above show the calculation.
Show all associationsHide all associations
Drug development
3 compounds recorded · 3 approved
View all recorded compounds (3)Hide
Open Targets known-drugs universe. Drug name and highest clinical stage only — the disease relationship is NOT read from this slice (it carries trial-context noise); approved indications come from the canonical graph above.
Tractability
Antibodies — Strong
Protein degraders — Emerging
View underlying tractability evidence (5)Hide
Raw Open Targets tractability assessment buckets, by modality.
Clinical trials
Trials of drugs that target this protein — reached indirectly through those drugs, so a trial listed here studies the drug, not the protein. Ranked by active status, then clinical phase and recency, and spread across the targeting drugs.
View all trials (26)Hide
ClinicalTrials.gov via the drug-target graph.
What's happening now
Recent therapeutic activity around this target — regulatory actions, clinical trials and safety signals for 2 drugs that target this protein, plus publications where such a drug is a genuine subject. Every item is reached indirectly through the drug, not the protein itself; incidental mentions (a paper that merely measures a drug) and press items are excluded.
- Label change
Label change: DEPEMOKIMAB (BLA761458)
- Regulatory approval
Approval: Exdensur (EMA)
- Regulatory approval
Approval: DEPEMOKIMAB (BLA761458)
- Regulatory approval
Approval: Nucala (EMA)
Objective event titles are shown unmodified; the event kind and significance line are derived from structured fields. Forefront AttentionEvent stream aggregating Europe PMC Regulatory filings ClinicalTrials.gov.
Research activity
Papers linked directly to this protein. This is the protein's own literature — descriptor-derived papers are kept separate below.
Most cited
Recent
Europe PMC papers linked directly to this protein.