Publication — IRIC

Discovery of Potent Protease-Activated Receptor 4 Antagonists with in Vivo Antithrombotic Efficacy.

In an effort to identify novel antithrombotics, we have investigated protease-activated receptor 4 (PAR4) antagonism by developing and evaluating a tool compound, UDM-001651, in a monkey thrombosis model. Beginning with a high-throughput screening hit, we identified an imidazothiadiazole-based PAR4 antagonist chemotype. Detailed structure-activity relationship studies enabled optimization to a potent, selective, and orally bioavailable PAR4 antagonist, UDM-001651. UDM-001651 was evaluated in a monkey thrombosis model and shown to have robust antithrombotic efficacy and no prolongation of kidney bleeding time. This combination of excellent efficacy and safety margin strongly validates PAR4 antagonism as a promising antithrombotic mechanism.

Publication date
August 22, 2019
Principal Investigators
Miller MM, Banville J, Friends TJ, Gagnon M, Hangeland JJ, Lavallée JF, Martel A, O'Grady H, Rémillard R, Ruediger E, Tremblay F, Posy SL, Allegretto NJ, Guarino VR, Harden DG, Harper TW, Hartl K, Josephs J, Malmstrom S, Watson C, Yang Y, Zhang G, Wong P, Yang J, Bouvier M, Seiffert DA, Wexler RR, Lawrence RM, Priestley ES, Marinier A
PubMed reference
J. Med. Chem. 2019;62(16):7400-7416
PubMed ID
Bristol-Myers Squibb Research & Development , 311 Pennington-Rocky Hill Road , Pennington , New Jersey 08534 , United States.