Protein / target
Receptor-type tyrosine-protein kinase FLT3
Protein at a glance
Biological role
Transmembrane receptor protein tyrosine kinase activity
Primary system
Immune system
Strongest disease association
hypothyroidism
Therapeutic maturity
Clinically validated target
Druggability
Small molecule
Clinical development
16 approved · 29 in clinical development
Derived from structured UniProt, Open Targets and literature data on this page.
Protein profile
Canonical identity and biological annotation from UniProt.
Function
Tyrosine-protein kinase that acts as a cell-surface receptor for the cytokine FLT3LG and regulates differentiation, proliferation and survival of hematopoietic progenitor cells and of dendritic cells. Promotes phosphorylation of SHC1 and AKT1, and activation of the downstream effector MTOR. Promotes activation of RAS signaling and phosphorylation of downstream kinases, including MAPK1/ERK2 and/or MAPK3/ERK1. Promotes phosphorylation of FES, FER, PTPN6/SHP, PTPN11/SHP-2, PLCG1, and STAT5A and/or STAT5B. Activation of wild-type FLT3 causes only marginal activation of STAT5A or STAT5B. Mutations that cause constitutive kinase activity promote cell proliferation and resistance to apoptosis via the activation of multiple signaling pathways
Subcellular location
Domains and Gene Ontology detail (37)Hide
Domains & features
Gene Ontology
- Cendoplasmic reticulum lumen
- Cendosome membrane
- Cplasma membrane
- Creceptor complex
- FATP binding
- Fcytokine receptor activity
- Fgrowth factor binding
- Fnuclear glucocorticoid receptor binding
- Fphosphatidylinositol 3-kinase activator activity
- Fprotein tyrosine kinase activity
- Fprotein-containing complex binding
- Ftransmembrane receptor protein tyrosine kinase activity
Biological roles
What this protein does, drawn together from its UniProt function, Gene Ontology terms and Reactome pathways.
View supporting evidenceHide supporting evidence
Kinase signalling
- ·Tyrosine-protein kinase that acts as a cell-surface receptor for the cytokine FLT3LG and…
- ·protein tyrosine kinase activity
- ·transmembrane receptor protein tyrosine kinase activity
- ·peptidyl-tyrosine phosphorylation
Immune signalling
- ·Tyrosine-protein kinase that acts as a cell-surface receptor for the cytokine FLT3LG and…
- ·cytokine receptor activity
- ·B cell differentiation
- ·cellular response to cytokine stimulus
Apoptosis & cell death
- ·regulation of apoptotic process
View underlying pathways (25)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.
Drugs targeting this protein
Whether each drug engages this protein directly or through a complex, and how many other targets are recorded for it. Direct binders with few recorded targets are listed first.
Tyrosine-protein kinase receptor FLT3 inhibitor
Appears in clinical studies involving tenosynovial giant cell tumor, diffuse type, neoplasm, Alzheimer disease, pigmented villonodular synovitis
Tyrosine-protein kinase receptor FLT3 inhibitor
Appears in clinical studies involving acute myeloid leukemia by FAB classification, acute myeloid leukemia, neoplasm, acute myeloid leukemia
Tyrosine-protein kinase receptor FLT3 inhibitor
Appears in clinical studies involving gastrointestinal stromal tumor, renal cell carcinoma, gastrointestinal stromal tumor, neuroendocrine neoplasm
ChEMBL mechanism, action type and target identity. Open Targets clinical status and indications.
Translational evidence
Why this target matters therapeutically — disease associations, drugs in development, tractability and safety, from Open Targets.
Strongest genetic associations
Human genetic evidence — the most direct causal link between this target and a disease.
Highest-confidence therapeutic associations
Diseases where a drug acting on this target has already reached clinical development.
Highest overall evidence
Remaining associations by Open Targets' aggregated evidence score.
Show all associationsHide all associations
Open Targets ranks 959 associations for this target and we store the top 10 by aggregated score. The long tail is largely literature co-mention and RNA-expression evidence, not evidence that this target drives those diseases.
Known drugs · 45 total
acute myeloid leukemia · myeloid leukemia · myelodysplastic syndrome
non-small cell lung carcinoma · renal cell adenocarcinoma · acute myeloid leukemia
acute myeloid leukemia · neoplasm
primary myelofibrosis · acquired polycythemia vera
breast cancer · gastric adenocarcinoma · renal cell carcinoma
mucosal melanoma · wet macular degeneration · non-small cell lung carcinoma
myelofibrosis · neoplasm · myelofibrosis
plasma cell myeloma · acute lymphoblastic leukemia · myelofibrosis with myeloid metaplasia
gastrointestinal stromal tumor · renal cell carcinoma · gastrointestinal stromal tumor
Tractability
Safety liabilities
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.
Show remaining trials (24)Hide
ClinicalTrials.gov via the drug-target graph.
Related literature
Papers indexed under “fms-Like Tyrosine Kinase 3” — a subject heading that covers this protein without being specific to it. Shown as context; not counted as this protein's own research activity.
Europe PMC literature, reached through a MeSH descriptor linked to this protein.
Forefront confidence
Our own weighting of the evidence behind each disease association. Human genetics and clinical evidence count for most; literature co-mention counts for little, because two entities sharing an abstract is not evidence that one drives the other.
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 underlying per-type scores are shown above so the calculation can be checked.
What's happening now
Recent activity around this target, drawn from one canonical event stream. Every item is reached through 3 drugs that target this protein, so each event is news about that drug rather than about the protein directly.
- New publicationBrain-wide microglia replacement using a nonconditioning strategy ameliorates pathology in mouse models of neurological disorders.
- New publicationMachine-learning and mechanistic modeling of metastatic breast cancer after neoadjuvant treatment.
- New publicationGenomic profiling in GIST: Implications in clinical outcome and future challenges.
- New publicationDistinguishing the effects of systemic CSF1R inhibition by PLX3397 on microglia and peripheral immune cells.
- New publicationNivolumab plus Cabozantinib versus Sunitinib for Advanced Renal-Cell Carcinoma.
- Regulatory approval
Approval: Sunitinib Accord (EMA)
- New publicationMicroglial activation contributes to cognitive impairments in rotenone-induced mouse Parkinson's disease model.
- New publicationLiver transarterial chemoembolization and sunitinib for unresectable hepatocellular carcinoma: Results of the PRODIGE 16 study.
- New publicationUpdated efficacy results from the JAVELIN Renal 101 trial: first-line avelumab plus axitinib versus sunitinib in patients with advanced renal cell carcinoma.
- Regulatory approval
Approval: Xospata (EMA)
- New publicationMicroglia drive APOE-dependent neurodegeneration in a tauopathy mouse model.
- New publicationGilteritinib or Chemotherapy for Relapsed or Refractory <i>FLT3</i>-Mutated AML.
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.