Foretinib (GSK1363089)

Foretinib (GSK1363089) is an ATP-competitive inhibitor of HGFR and VEGFR, mostly for Met and KDR with IC50 of 0.4 nM and 0.9 nM in cell-free assays. Less potent against Ron, Flt-1/3/4, Kit, PDGFRα/β and Tie-2, and little activity to FGFR1 and EGFR. Phase 2.

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Foretinib (GSK1363089) Chemical Structure

Foretinib (GSK1363089) Chemical Structure
Molecular Weight: 632.65

Validation & Quality Control

Customer Product Validation(2)

Quality Control & MSDS

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Foretinib (GSK1363089) is available in the following compound libraries:

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Product Information

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  • Research Area
  • Inhibition Profile
  • Foretinib (GSK1363089) Mechanism

Product Description

Biological Activity

Description Foretinib (GSK1363089) is an ATP-competitive inhibitor of HGFR and VEGFR, mostly for Met and KDR with IC50 of 0.4 nM and 0.9 nM in cell-free assays. Less potent against Ron, Flt-1/3/4, Kit, PDGFRα/β and Tie-2, and little activity to FGFR1 and EGFR. Phase 2.
Targets Met [1]
(Cell-free assay)
KDR [1]
(Cell-free assay)
Tie-2 [1]
(Cell-free assay)
(Cell-free assay)

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IC50 0.4 nM 0.86 nM 1.1 nM 2.8 nM
In vitro XL880 inhibits HGF receptor family tyrosine kinases with IC50 values of 0.4 nM for Met and 3 nM for Ron. XL880 also inhibits KDR, Flt-1, and Flt-4 with IC50 values of 0.9 nM, 6.8 nM and 2.8 nM, respectively. XL880 inhibits colony growth of B16F10, A549 and HT29 cells with IC50 of 40 nM, 29 nM and 165 nM, respectively. [1] A recent study indicates XL880 affects cell growth differently in gastric cancer cell lines MKN-45 and KATO-III. XL880 inhibits phosphorylation of MET and downstream signaling molecules in MKN-45 cells, while targets GFGR2 in KATO-III cells. [2]
In vivo A single 100 mg/kg oral gavage dose of XL880 results in substantial inhibition of phosphorylation of B16F10 tumor Met and ligand (e.g., HGFor VEGF)-induced receptor phosphorylation of Met in liver and Flk-1/KDR in lung, which both persisted through 24 hours. Treatment with XL880 (30-100 mg/kg, once daily, oral gavage) results in reduction in tumor burden. The lung surface tumor burden is reduced by 50% and 58% following treatment with 30 and 100 mg/kg XL880, respectively. XL880 treatment of mice bearing B16F10 solid tumors also results in dose-dependent tumor growth inhibition of 64% and 87% at 30 and 100 mg/kg, respectively. For both studies, administration of XL880 is well tolerated with no significant body weight loss. [1] XL880 is developed to target abnormal signaling of HGF through Met and simultaneously target several receptors tyrosine kinase involved in tumor angiogenesis. XL880 caused tumor hemorrhage and necrosis in human xenografts within 2 to 4 hours, and maximal tumornecrosis is observed at 96 hours (after five daily doses), resulting in complete regression. [3]

Protocol(Only for Reference)

Kinase Assay:


Kinase Inhibition Assay Kinase inhibition is investigated using one of three assay formats: [33P]phosphoryl transfer, luciferase-coupled chemiluminescence, or AlphaScreen tyrosine kinase technology. IC50s are calculated by nonlinear regression analysis using XLFit.33P -Phosphoryl Transfer Kinase Assay Reactions are performed in 384-well white, clear bottom, high-binding microtiter plates (Greiner, Monroe, NC). Plates are coated with 2 μg/well of protein or peptide substrate in a 50 μL volume of coating buffer contained 40 μg/mL substrate (poly(Glu, Tyr) 4:1, 22.5 mM Na2CO3, 27.5 mM NaHCO3, 50 mM NaCl and 3 mM NaN 3. Coated plates are washed once with 50 μL of assay buffer following overnight incubation at room temperature (RT). Test compounds and enzymes are combined with 33P-γ-ATP (3.3 μCi/nmol) in a total volume of 20 μL. The reaction mixture is incubated at RT for 2 hours and terminated by aspiration. The microtiter plates are subsequently washed 6 times with 0.05% Tween-PBS buffer (PBST). Scintillation fluid (50 μL/well) is added and incorporated 33P is measured by liquid scintillation spectrometry using a MicroBeta scintillation counter.Luciferase-Coupled Chemiluminescence Assay Reactions are conducted in 384-well white, medium binding microtiter plates (Greiner). In a first step enzyme and compound are combined and incubated for 60 minutes; reactions are initiated by addition of ATP and peptide substrate (poly(Glu, Tyr) 4:1) in a final voume of 20 μL, and incubated at RT for 2-4 hours. Following the kinase reaction, a 20 μL aliquot of Kinase Glo (Promega, Madison, WI) is added and luminescence signal is measured using a Victor plate reader. Total ATP consumption is limited to 50%. AlphaScreenTM Tyrosine Kinase Assay Donor beads coated with streptavidin and acceptor beads coated with PY100 anti-phosphotyrosine antibody are used. Biotinylated poly(Glu,Tyr) 4:1 is used as the substrate. Substrate phosphorylation is measured by addition of donor/acceptor beads by luminescence following donor-acceptor bead complex formation. Kinase and test compounds are combined and preincubated for 60 minutes, followed by addition of ATP, and biotinylated poly(Glu, Tyr) in a total volume of 20 μL in 384-well white, medium binding microtiter plates (Greiner). Reaction mixtures are incubated for 1 hour at room temperature. Reactions are quenched by addition of 10 μL of 15-30 μg/mL AlphaScreen bead suspension containing 75 mM Hepes, pH 7.4, 300 mM NaCl, 120 mM EDTA, 0.3% BSA and 0.03% Tween-20. After 2-16 hours incubation at room temperature plates are read using an AlphaQuest reader.

Cell Assay:


Cell lines B16F10, A549, and HT29 cells
Concentrations 40 nM
Incubation Time 12 to 14 days

B16F10, A549, and HT29 cells (1.2× 103 per well) are mixed with soft agar and seeded in a 96-well plate containing 10% FBS and EXEL-2880 over a base agar layer. For normoxic conditions, the plates are incubated (37°C) for 12 to 14 days in 21% oxygen, 5% CO2, and 74% nitrogen, whereas incubation (37 °C) under hypoxic conditions is done in a hypoxia chamber in 1% oxygen, 5% CO2, and 94% nitrogen. The number of colonies is evaluated under each condition following addition of 50% Alamar Blue and fluorescence detection.

Animal Study:


Animal Models B16F10 tumor cells (2 × 10 5) are implanted via i.v. tail vein injection into athymic nude mice (NCr or BALB/c) 5 to 8 weeks old
Formulation 0.9% normal saline
Dosages 100 mg/kg
Administration Administered via oral gavage

Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

SpeciesMouseRatRabbitGuinea pigHamsterDog
Weight (kg)
Body Surface Area (m2)0.0070.0250.
Km factor36128520
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×  mouse Km(3)  = 11.2 mg/kg
rat Km(6)


[1] Qian F, et al. Cancer Res, 2009, 69(20), 8009-8016.

[2] Kataoka Y, et al. Invest New Drugs, 2011.

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Clinical Trial Information( data from, updated on 2015-09-19)

NCT Number Recruitment Conditions Sponsor
Start Date Phases
NCT02034097 Withdrawn Cancer GlaxoSmithKline April 2014 Phase 2
NCT02034097 Withdrawn Cancer GlaxoSmithKline April 2014 Phase 2
NCT01138384 Completed Breast Cancer NCIC Clinical Trials Group June 2010 Phase 1|Phase 2
NCT01138384 Completed Breast Cancer NCIC Clinical Trials Group June 2010 Phase 1|Phase 2
NCT01147484 Completed Recurrent Breast Cancer NCIC Clinical Trials Group May 2010 Phase 2

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Chemical Information

Download Foretinib (GSK1363089) SDF
Molecular Weight (MW) 632.65


CAS No. 849217-64-7
Storage 3 years -20℃powder
6 months-80℃in solvent
Synonyms EXEL-2880,XL-880
Solubility (25°C) * In vitro DMSO 127 mg/mL (200.74 mM)
Water <1 mg/mL (<1 mM)
Ethanol <1 mg/mL (<1 mM)
In vivo 30% propylene glycol, 5% Tween 80, 65% D5W 30 mg/mL
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Name N-(3-fluoro-4-(6-methoxy-7-(3-morpholinopropoxy)quinolin-4-yloxy)phenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide

Customer Product Validation (2)

Click to enlarge
Source Cancer Lett 2013 340(1), 43-50. Foretinib (GSK1363089) purchased from Selleck
Method Western blot
Cell Lines SK-BR-3-LR cells
Concentrations 0.1 uM
Incubation Time
Results Consistent with the cell proliferation data, the Western blot results demonstrated that only XL880, crizotinib, and MGCD-265 significantly inhibited AKT and ERK1/2 phosphorylation in SK-BR-3-LR cells when combined with lapatinib.

Click to enlarge
Source Dr. Zhang of Tianjin Medical University. Foretinib (GSK1363089) purchased from Selleck
Method Western blot
Cell Lines MDA-MB-231 cells
Concentrations 0.01-10 μM
Incubation Time 3 h
Results XL-880 treatment resulted in a reduction of cmet phosphorylation.

Product Use Citation (9)

Tech Support & FAQs

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