Protein / target
Fibroblast growth factor receptor 1
Protein at a glance
Biological role
Fibroblast growth factor receptor
Primary biology
FGFR growth-factor signalling
Strongest disease association
Hypogonadotropic hypogonadism 2 with or without anosmia
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
Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of embryonic development, cell proliferation, differentiation and migration.
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Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of embryonic development, cell proliferation, differentiation and migration. Required for normal mesoderm patterning and correct axial organization during embryonic development, normal skeletogenesis and normal development of the gonadotropin-releasing hormone (GnRH) neuronal system. Phosphorylates PLCG1, FRS2, GAB1 and SHB. Ligand binding leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. Phosphorylation of FRS2 triggers recruitment of GRB2, GAB1, PIK3R1 and SOS1, and mediates activation of RAS, MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Promotes phosphorylation of SHC1, STAT1 and PTPN11/SHP2. In the nucleus, enhances RPS6KA1 and CREB1 activity and contributes to the regulation of transcription. FGFR1 signaling is down-regulated by IL17RD/SEF, and by FGFR1 ubiquitination, internalization and degradation
Subcellular location
Domains and Gene Ontology detail (56)Hide
Domains & features
Gene Ontology
- Ccytoplasmic vesicle
- Ccytosol
- Cextracellular region
- Cglutamatergic synapse
- Cmembrane
- Cnucleus
- Cplasma membrane
- Cpostsynapse
- Creceptor complex
- FATP binding
- Ffibroblast growth factor binding
- Ffibroblast growth factor receptor activity
Biological roles
What this protein does, drawn together from its UniProt function, Gene Ontology terms and Reactome pathways.
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Growth-factor signalling
- ·Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth facto…
- ·fibroblast growth factor binding
- ·fibroblast growth factor receptor activity
- ·cellular response to fibroblast growth factor stimulus
Cell proliferation & survival
- ·positive regulation of cell population proliferation
- ·PIP3 activates AKT signaling
- ·PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling
Synaptic signalling
- ·glutamatergic synapse
- ·postsynapse
- ·regulation of postsynaptic density assembly
Cell migration
- ·cell migration
- ·positive regulation of blood vessel endothelial cell migration
- ·positive regulation of endothelial cell chemotaxis
Oncogenic signalling
- ·Constitutive Signaling by Aberrant PI3K in Cancer
Kinase signalling
- ·Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth facto…
- ·protein tyrosine kinase activity
- ·positive regulation of MAP kinase activity
- ·positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction
View underlying pathways (22)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.
12 medicines meet Open Targets' target-level approved-medicine definition; the 4 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.
Fibroblast growth factor receptor 1 inhibitor
Indicated for Cholangiocarcinoma, Neoplasms
Fibroblast growth factor receptor 1 inhibitor
Indicated for Colorectal Neoplasms, Neoplasms
Fibroblast growth factor receptor inhibitor
Indicated for Carcinoma, Transitional Cell, Urinary Bladder Neoplasms, Neoplasms
Fibroblast growth factor receptor inhibitor
Indicated for Cholangiocarcinoma, 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 FGFR1
Gene-level evidence surfaced through the gene FGFR1that 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
26 compounds recorded · 12 approved · 14 in clinical development
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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
Other modalities — Strong
View underlying tractability evidence (14)Hide
Raw Open Targets tractability assessment buckets, by modality.
Safety-related annotations
Terms indexed against this target in Open Targets' safety data, with their datasource. These are annotations, not causal claims: the direction of effect (whether activation or inhibition is implicated), species and evidence strength are not captured here, so an entry does not mean that modulating this target is known to cause that condition.
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 4 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.
- Regulatory approval
Approval: Balversa (EMA)
- 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.
- Regulatory approval
Approval: Lytgobi (EMA)
- New publicationFutibatinib for <i>FGFR2</i>-Rearranged Intrahepatic Cholangiocarcinoma.
- Regulatory approval
Approval: Pemazyre (EMA)
- New publicationTargeted therapy for hepatocellular carcinoma.
- New publicationMolecular targeted and immune checkpoint therapy for advanced hepatocellular carcinoma.
- New publicationErdafitinib in Locally Advanced or Metastatic Urothelial 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.