BMS-935177

Biological Activity

In vitro: BMS-935177 shows greater than 50-fold selectivity over the SRC family of kinases, including 1100-fold selectivity over SRC itself. Other kinases inhibited with a potency less than 150 nM (50-fold selectivity) included TRKA, HER4, TRKB, and RET. It inhibits calcium flux in human Ramos B cells (IC50 = 27 nM) and inhibits CD69 surface expression in peripheral B cells stimulated with anti-IgM and anti-IgG. However, BMS-935177 has no effect on CD69 surface expression in B cells stimulated through the CD40 receptor with CD40 ligand. Against IgG-containing immune complex-driven low affinity activating Fcγ receptor (FcγRIIa and FcγRIII) end points in peripheral blood mononuclear cells (PBMCs), BMS-935177 effectively inhibited TNFα production with an IC50 value of 14 nM.

In vivo: Plasma protein binding for BMS-935177 is high for all species, with less than 1% free for human. It has excellent oral bioavailability in all preclinical species, from both suspension and solution dosing, despite its low aqueous solubility. The oral bioavailability for BMS-935177 with solution dosing ranges from 84% to 100% in rat, mouse, dog, and cynomolgus monkey, with low clearance in single intravenous (iv) infusion studies. When dosed at 2 mg/kg i.v. in mouse and rat, the T1/2 of BMS-935177 is 4 h and 5.1 h respectively.

Protocol

Cell Experiment
Cell lines
Preparation method
Concentrations
Incubation time

Animal Experiment
Animal models	Male Sprague−Dawley rats
Formulation	polyethylene glycol 400 (PEG-400)/water/ethanol (70:20:10, v/v/v) solution
Dosages	2 mg/kg
Administration	i.v.

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] De Lucca GV, et al. J Med Chem. Small Molecule Reversible Inhibitors of Bruton's Tyrosine Kinase (BTK): Structure-Activity Relationships Leading to the Identification of 7-(2-Hydroxypropan-2-yl)-4-[2-methyl-3-(4-oxo-3,4-dihydroquinazolin-3-yl)phenyl]-9H-carbazole-1-carboxamide (BMS-935177).