IL9

Gene

interleukin 9

HGNCHGNC:6029 EnsemblENSG00000145839 NCBI Gene3578

Locus: gene with protein productLocation: 5q31.1

Encodes

via encodes

The protein product this gene encodes, reached through the canonical GENE→PROTEIN (encodes) relation. Its biology, drugs, indications, trials and therapeutic evidence live on the protein's own page.

Interleukin-9P15248

Protein · therapeutic target

Clinical-stage target · 1 candidate in clinical development

Explore protein biology & therapeutics

Also known as

Symbols and names change; identity (the HGNC ID) does not. Previous and alternative forms are kept distinct.

Also known asIL-9 · HP40 · P40

View full nomenclature history (7)

Alias symbolsIL-9, HP40, P40

Alias namesp40 T-cell and mast cell growth factor, T-cell growth factor p40, p40 cytokine, homolog of mouse T cell and mast cell growth factor 40

Associated diseases

via associated_with

Diseases linked to this gene through the canonical GENE→DISEASE (associated_with) relation, drawn from Open Targets' top-ranked associations by overall score — not the full association set. Disease-level detail lives on each disease's own page.

Neurodegenerative Diseases

Sjogren's Syndrome

Asthma

Neoplasms

Arthritis, Rheumatoid

Infections

Lupus Erythematosus, Systemic

Leukemia, Lymphocytic, Chronic, B-Cell

Scleroderma, Systemic

Drawn from Open Targets’ top 10 associations by overall score for this gene — the subset resolved to a canonical disease. Lower-ranked associations, and diseases not yet canonicalised, are not shown.

Gene family

HGNC gene-group membership.

Interleukins

Provenance

HGNCCanonical human gene identity from HGNC (release 2026-07-07), updated 2023-01-20.

Open TargetsGene–disease associations from the Open Targets Platform.