OnCo

HDAC9 (Histone deacetylase 9) is a protein that switches other genes on and off. The public catalogues list it as a drug target, a biomarker and a fusion partner, and an approved or late-stage drug is recorded against it. Tied to Breast cancer, Oesophageal cancer, Non-Hodgkin lymphoma and 4 more. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Responsible for the deacetylation of lysine residues on the N-terminal part of the core histones (H2A, H2B, H3 and H4). Histone deacetylation gives a tag for epigenetic repression and plays an important role in transcriptional regulation, cell cycle progression and developmental events. Represses MEF2-dependent transcription. Isoform 3 lacks active site residues and therefore is catalytically inactive. Represses MEF2-dependent transcription by recruiting HDAC1 and/or HDAC3. Seems to inhibit skeletal myogenesis and to be involved in heart development. Location: Nucleus (UniProt). Locus 7p21.1 (HGNC).

Where it is found
  • Breast cancer: CIViC evidence names this disease
  • Oesophageal cancer: CIViC evidence names this disease
  • Non-Hodgkin lymphoma: Open Targets association 0.58 with non-Hodgkin lymphoma (MONDO_0018908)
  • Multiple myeloma: Open Targets association 0.56 with plasma cell myeloma (MONDO_0009693)
  • Skin cancer: Open Targets association 0.51 with skin cancer (MONDO_0002898)
  • Glioma & glioblastoma: CIViC evidence names this disease
Class: transcription · Gene: HDAC9 · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

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No trial in the corpus names this target or one of its products.

Resistance routes

Unaddressed routes →

The resistance atlas has no route that names this target.

No pathway diagram carries this target as a node.

Companion diagnostics

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Preclinical models

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No model entry for this target yet; check the cancer entries on the models page.

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Literature

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Query for this target: (TITLE:"HDAC9" OR ABSTRACT:"HDAC9" OR TITLE:"histone deacetylase 9" OR ABSTRACT:"histone deacetylase 9" OR TITLE:"Histone deacetylase 9" OR ABSTRACT:"Histone deacetylase 9" OR TITLE:"KIAA0744" OR ABSTRACT:"KIAA0744" OR TITLE:"HD7" OR ABSTRACT:"HD7" OR TITLE:"HDAC7B" OR ABSTRACT:"HDAC7B") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about HDAC9, not a curated reading list.

Export

The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/hdac9.json. Licence CC BY-NC 4.0.