OnCo

EXT2 (Exostosin-2) is an enzyme. In the public catalogues the evidence so far is association rather than a proven role. Tied to Ovarian cancer, Skin cancer and Breast cancer. 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

Glycosyltransferase forming with EXT1 the heterodimeric heparan sulfate polymerase which catalyses the elongation of the heparan sulfate glycan backbone. Glycan backbone extension consists in the alternating transfer of (1->4)-beta-D-GlcA and (1->4)-alpha-D-GlcNAc residues from their respective UDP-sugar donors. Both EXT1 and EXT2 are required for the full activity of the polymerase since EXT1 bears the N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase activity within the complex while EXT2 carries the glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity. Heparan sulfate proteoglycans are ubiquitous components of the extracellular matrix and play an important role in tissue homeostasis and signalling. Location: Golgi apparatus membrane; Golgi apparatus, cis-Golgi network membrane; Endoplasmic reticulum membrane; Secreted (UniProt). Locus 11p11.2 (HGNC).

Where it is found
  • Ovarian cancer: Open Targets association 0.57 with ovarian cancer (MONDO_0008170)
  • Skin cancer: Open Targets association 0.51 with skin cancer (MONDO_0002898)
  • Breast cancer: Open Targets association 0.50 with breast cancer (MONDO_0007254)
Class: enzyme · Gene: EXT2 · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

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Resistance routes

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Companion diagnostics

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Literature

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Query for this target: (TITLE:"EXT2" OR ABSTRACT:"EXT2" OR TITLE:"exostosin glycosyltransferase 2" OR ABSTRACT:"exostosin glycosyltransferase 2" OR TITLE:"Exostosin-2" OR ABSTRACT:"Exostosin-2") 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 EXT2, 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/ext2.json. Licence CC BY-NC 4.0.