Protein / target
Tyrosine-protein kinase FRK
Protein at a glance
Biological role
Non-membrane spanning protein tyrosine kinase
Strongest disease association
Gout
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
Non-receptor tyrosine-protein kinase that negatively regulates cell proliferation.
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Non-receptor tyrosine-protein kinase that negatively regulates cell proliferation. Positively regulates PTEN protein stability through phosphorylation of PTEN on 'Tyr-336', which in turn prevents its ubiquitination and degradation, possibly by reducing its binding to NEDD4. May function as a tumor suppressor
Subcellular location
Domains and Gene Ontology detail (19)Hide
Domains & features
Gene Ontology
- Cazurophil granule lumen
- Ccytoplasm
- Ccytosol
- Cextracellular exosome
- Cextracellular region
- Cnucleoplasm
- Cnucleus
- Cplasma membrane
- Cspecific granule lumen
- FATP binding
- Fnon-membrane spanning protein tyrosine kinase activity
- Fprotein tyrosine kinase activity
Biological roles
What this protein does, drawn together from its UniProt function, Gene Ontology terms and Reactome pathways.
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Receptor tyrosine kinase signalling
- ·cell surface receptor protein tyrosine kinase signaling pathway
View underlying pathways (2)Hide underlying pathways
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.
2 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.
Tyrosine-protein kinase FRK inhibitor
Indicated for Colorectal Neoplasms, Neoplasms
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 FRK
Gene-level evidence surfaced through the gene FRK 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
6 compounds recorded · 2 approved · 4 in clinical development
View all recorded compounds (6)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
Antibodies — Emerging
Protein degraders — Emerging
View underlying tractability evidence (6)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 a drug that targets 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
A Phase II Study Using Regorafenib as Second or Third Line Therapy in Metastatic Medullary Thyroid Cancer
- Trial status changed
A Randomized Phase II, Placebo-controlled, Multicenter Study Evaluating Efficacy and Safety of Regorafenib in Patients With Metastatic Bone Sarcomas
- Trial results posted
Neoadjuvant Regorafenib Plus Durvalumab (MEDI4736) in Patients With High-Risk Hepatocellular Carcinoma
- New publicationLenvatinib Plus Pembrolizumab Versus Standard of Care for Previously Treated Metastatic Colorectal Cancer: Final Analysis of the Randomized, Open-Label, Phase III LEAP-017 Study.
- New publicationTargeted therapy for hepatocellular carcinoma.
- New publicationMolecular targeted and immune checkpoint therapy for advanced hepatocellular carcinoma.
- New publicationRandomized Double-Blind Phase II Study of Regorafenib in Patients With Metastatic Osteosarcoma.
- New publicationRegorafenib for patients with hepatocellular carcinoma who progressed on sorafenib treatment (RESORCE): a randomised, double-blind, placebo-controlled, phase 3 trial.
- Regulatory approval
Approval: Stivarga (EMA)
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.