OnCo

STAG2 (Cohesin subunit SA-2) is a gene whose normal job is to hold cell growth in check. The public catalogues list it as a drug target, a tumour suppressor and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Bladder & urothelial cancer, Sarcomas, Renal cell carcinoma 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

Component of cohesin complex, a complex required for the cohesion of sister chromatids after DNA replication. The cohesin complex apparently forms a large proteinaceous ring within which sister chromatids can be trapped. At anaphase, the complex is cleaved and dissociates from chromatin, allowing sister chromatids to segregate. The cohesin complex may also play a role in spindle pole assembly during mitosis. Location: Nucleus; Chromosome; Chromosome, centromere (UniProt). Locus Xq25 (HGNC).

Where it is found
  • Bladder & urothelial cancer: Open Targets association 0.66 with urinary bladder cancer (MONDO_0001187); CIViC evidence names this disease
  • Sarcomas: Open Targets association 0.62 with sarcoma (MONDO_0005089)
  • Renal cell carcinoma: IntOGen driver in 2 cohorts (CCRCC, PRCC)
  • Endometrial cancer: Open Targets association 0.52 with endometrial cancer (MONDO_0011962); IntOGen driver in 1 cohort (UCEC)
  • Thyroid cancer: IntOGen driver in 1 cohort (WDTC)
  • Breast cancer: Open Targets association 0.55 with breast cancer (MONDO_0007254)
Class: tumor suppressor · Gene: STAG2 · 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:"STAG2" OR ABSTRACT:"STAG2" OR TITLE:"STAG2 cohesin complex component" OR ABSTRACT:"STAG2 cohesin complex component" OR TITLE:"Cohesin subunit SA-2" OR ABSTRACT:"Cohesin subunit SA-2" OR TITLE:"SA-2" OR ABSTRACT:"SA-2" OR TITLE:"SCC3B" OR ABSTRACT:"SCC3B" OR TITLE:"SA2" OR ABSTRACT:"SA2") 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 STAG2, 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/stag2.json. Licence CC BY-NC 4.0.