OnCo

USP9X (Ubiquitin carboxyl-terminal hydrolase 9X) is an enzyme. The public catalogues list it as an oncogene driver and a tumour suppressor, and it is called a cancer driver by mutation analysis of patient cohorts. Tied to Thyroid cancer, Hepatocellular carcinoma, Sarcomas and 5 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

Deubiquitinase involved both in the processing of ubiquitin precursors and of ubiquitinated proteins. May therefore play an important regulatory role at the level of protein turnover by preventing degradation of proteins through the removal of conjugated ubiquitin. Specifically hydrolyses 'Lys-11'-, followed by 'Lys-63'-, 'Lys-48'- and 'Lys-6'-linked polyubiquitins chains. Essential component of TGF-beta/BMP signalling cascade. Specifically deubiquitinates monoubiquitinated SMAD4, opposing the activity of E3 ubiquitin-protein ligase TRIM33. Deubiquitinates alkylation repair enzyme ALKBH3. Location: Cytoplasm, cytosol; Cell projection, growth cone; Cytoplasm, cytoskeleton, cilium axoneme (UniProt). Locus Xp11.4 (HGNC).

Where it is found
  • Thyroid cancer: IntOGen driver in 2 cohorts (WDTC)
  • Hepatocellular carcinoma: IntOGen driver in 1 cohort (HCC)
  • Sarcomas: IntOGen driver in 1 cohort (LMS)
  • Nasopharyngeal carcinoma: IntOGen driver in 1 cohort (NPC)
  • Prostate cancer: IntOGen driver in 1 cohort (PRAD)
  • Papillary thyroid cancer: IntOGen driver in 2 cohorts (WDTC)
Class: enzyme · Gene: USP9X · 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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Resistance routes

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Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"USP9X" OR ABSTRACT:"USP9X" OR TITLE:"ubiquitin specific peptidase 9 X-linked" OR ABSTRACT:"ubiquitin specific peptidase 9 X-linked" OR TITLE:"Ubiquitin carboxyl-terminal hydrolase 9X" OR ABSTRACT:"Ubiquitin carboxyl-terminal hydrolase 9X" OR TITLE:"DFFRX" OR ABSTRACT:"DFFRX" OR TITLE:"FAF-X" OR ABSTRACT:"FAF-X" OR TITLE:"MRX99" OR ABSTRACT:"MRX99") 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 USP9X, 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/usp9x.json. Licence CC BY-NC 4.0.