Protein / target
DNA topoisomerase 2-beta
Protein at a glance
Biological role
Ribonucleoprotein complex binding
Strongest disease association
B-cell immunodeficiency, distal limb anomalies, and urogenital malformations
Therapeutic position
Established drug target
Derived from structured UniProt, Open Targets and literature data on this page.
Protein profile
Canonical identity and biological annotation from UniProt.
Function overview
Key decatenating enzyme that alters DNA topology by binding to two double-stranded DNA molecules, generating a double-stranded break in one of the strands, passing the intact strand through the broken strand, and religating the broken strand.
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Key decatenating enzyme that alters DNA topology by binding to two double-stranded DNA molecules, generating a double-stranded break in one of the strands, passing the intact strand through the broken strand, and religating the broken strand. Plays a role in B-cell differentiation
Subcellular location
Domains and Gene Ontology detail (22)Hide
Domains & features
Gene Ontology
- Ccytosol
- Cnucleolus
- Cnucleoplasm
- Cnucleus
- Cribonucleoprotein complex
- FATP binding
- Fchromatin binding
- FDNA binding
- FDNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity
- Fmetal ion binding
- Fribonucleoprotein complex binding
- PB cell differentiation
Biological roles
What this protein does, drawn together from its UniProt function, Gene Ontology terms and Reactome pathways.
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Concepts derived from UniProt GO Reactome — each badge above shows which sources supported that role.
Interaction neighbourhood
Proteins with the strongest functional or physical association. Node size and line weight reflect STRING confidence; hover or select a partner to inspect one association.
Functional and physical associations from STRING v12.0. Only associations with this protein are drawn — partner-to-partner links are not part of this evidence.
Approved medicines with mapped indications
Approved therapies targeting this protein, grouped by what they are approved to treat — the disease-first view of the medicines below. Relationships come from the canonical approved-indication graph (ChEMBL phase-4), the same source as the drug cards.
Broader indication categories (1)Hide
Broad umbrella indications (e.g. “Neoplasms”). Shown here because every medicine also appears under a more specific disease above — kept for completeness, de-emphasised for clarity.
7 medicines meet Open Targets' target-level approved-medicine definition; the 1 shown here are those on this page with a canonical approved disease indication in the graph. Approved indications from ChEMBL (phase-4), via the canonical drug→disease graph.
Drugs targeting this protein
How approved and investigational drugs engage this protein — mechanism and action type, direct vs complex targeting, and how broadly each acts across other targets. A drug-first view (the section above groups the approved ones disease-first); direct binders with few recorded targets are listed first.
DNA topoisomerase II inhibitor
Indicated for Carcinoma, Small Cell, Lung Neoplasms, Small Cell Lung Carcinoma, Neoplasms
DNA topoisomerase II inhibitor
DNA topoisomerase II inhibitor
ChEMBL mechanism, action type, target identity and approved indications. Open Targets clinical status.
Translational evidence
Why this target matters therapeutically, strongest evidence first. Disease associations are gene-level (via the gene that encodes this protein) and open into the full confidence synthesis; the development universe, tractability and safety annotations are target-level, from Open Targets.
Strongest disease associations · via encoding gene TOP2B
Gene-level evidence surfaced through the gene TOP2B that encodes this protein — not a direct protein–disease relationship. Ranked by Forefront's causal-directness weighting, so genetically- and clinically-evidenced diseases lead over ones that merely share the literature.
View evidence synthesis (5)Hide
The evidence agreement range shows how closely the independent evidence families agree — it is not a statistical confidence interval, and nothing here is fitted to outcome data. Derived from Open Targets evidence types under Forefront weighting; the per-type scores above show the calculation.
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Drug development
11 compounds recorded · 7 approved · 4 in clinical development
View all recorded compounds (10)Hide
Open Targets known-drugs universe. Drug name and highest clinical stage only — the disease relationship is NOT read from this slice (it carries trial-context noise); approved indications come from the canonical graph above.
Tractability
Small molecules — Strong
Protein degraders — Emerging
View underlying tractability evidence (9)Hide
Raw Open Targets tractability assessment buckets, by modality.
Clinical trials
Trials of drugs that target this protein — reached indirectly through those drugs, so a trial listed here studies the drug, not the protein. Ranked by active status, then clinical phase and recency, and spread across the targeting drugs.
View all trials (26)Hide
ClinicalTrials.gov via the drug-target graph.
What's happening now
Recent therapeutic activity around this target — regulatory actions, clinical trials and safety signals for 2 drugs that target this protein, plus publications where such a drug is a genuine subject. Every item is reached indirectly through the drug, not the protein itself; incidental mentions (a paper that merely measures a drug) and press items are excluded.
- Trial status changed
Open-label Phase 3 Study of MK-7684A (Coformulation of Vibostolimab With Pembrolizumab) in Combination With Concurrent Chemoradiotherapy Followed by MK-7684A Versus Concurrent Chemoradiotherapy Followed by Durvalumab in Participants With Unresectable, Locally Advanced, Stage III NSCLC
- Trial status changed
Therapeutic Trial for Patients With Ewing Sarcoma Family of Tumor and Desmoplastic Small Round Cell Tumors
- Trial status changed
A Pilot Study to Estimate the Safety and Tolerability of the Combination of Polatuzumab Vedotin, With or Without Glofitamab, With Dose Adjusted Rituximab, Etoposide, Cyclophosphamide, and Doxorubicin (PERCH) for Upfront Treatment of Aggressive B-Cell Non-Hodgkin Lymphomas
- Trial status changed
A Phase II Trial of Tafasitamab and Lenalidomide Followed by Tafasitamab and ICE as Salvage Therapy for Transplant Eligible Patients With Relapsed/ Refractory Large B-Cell Lymphoma
- New publicationClinical insights into small cell lung cancer: Tumor heterogeneity, diagnosis, therapy, and future directions.
- New publicationUpdated Overall Survival and PD-L1 Subgroup Analysis of Patients With Extensive-Stage Small-Cell Lung Cancer Treated With Atezolizumab, Carboplatin, and Etoposide (IMpower133).
- New publicationFirst-Line Atezolizumab plus Chemotherapy in Extensive-Stage Small-Cell Lung Cancer.
- New publicationAs-Needed Vs Immediate Etoposide Chemotherapy in Combination With Antiretroviral Therapy for Mild-to-Moderate AIDS-Associated Kaposi Sarcoma in Resource-Limited Settings: A5264/AMC-067 Randomized Clinical Trial.
- Safety communication
Drug Safety Update: Dexrazoxane (Cardioxane): restriction of use
- New publicationIrinotecan plus cisplatin compared with etoposide plus cisplatin for extensive small-cell lung cancer.
Objective event titles are shown unmodified; the event kind and significance line are derived from structured fields. Forefront AttentionEvent stream aggregating Europe PMC Regulatory filings ClinicalTrials.gov.