AMG 337

Biological Activity

In vitro: AMG 337 potently inhibits the enzymatic activity of WT MET and a subset of MET mutants found in papillary renal cell carcinoma. The inability of AMG 337 to inhibit the Y1230 and D1228 mutants is likely the result of a disruption of the inactive confirmation of the activation loop in the MET kinase domain. AMG 337 also inhibits cell based HGF-induced MET phosphorylation in PC3 cells with IC50 of 5nM. AMG 337 inhibits proliferation in MET-dependent cancer cell lines. AMG 337 inhibits signaling through the PI3K and MAPK pathways in MET-amplified gastric cancer cell lines resulting in profound effects on cell proliferation and survival. In vivo: AMG 337 exhibits impressive potency with >90% inhibition of Gab-1 phosphorylation at a dose of 0.75 mg/kg (32 nmol/L free-drug concentration). AMG 337 is well tolerated at continuously administered doses that corresponded with complete MET inhibition for 24 hours, suggesting that AMG 337 has the preclinical attributes required to test the role of MET in human cancer.

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

Species	Mouse	Rat	Rabbit	Guinea pig	Hamster	Dog
Weight (kg)	0.02	0.15	1.8	0.4	0.08	10
Body Surface Area (m2)	0.007	0.025	0.15	0.05	0.02	0.5
Km factor	3	6	12	8	5	20

Animal A (mg/kg) = Animal B (mg/kg) multiplied by	Animal B Km
	Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the K_m factor for a mouse and then divide by the K_m factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

Chemical Information

References

[1] Hughes PE, et al. Mol Cancer Ther. In Vitro and In Vivo Activity of AMG 337, a Potent and Selective MET Kinase Inhibitor, in MET-Dependent Cancer Models.

[2] Du Z, et al. Mol Cancer Ther. Preclinical Evaluation of AMG 337, a Highly Selective Small Molecule MET Inhibitor, in Hepatocellular Carcinoma.