A Study To Determine the Efficacy and Safety of REG1 Compared to Bivalirudin in Patients Undergoing PCI

This study is designed to determine the efficacy of REG1 compared to bivalirudin in preventing periprocedural ischemic complications and major bleeding in patients undergoing PCI as a treatment for CAD. Bivalirudin has been studied in patients undergoing PCI in both ACS (NSTEMI and unstable angina \[UA\]) and elective PCI. In comparison to UFH, bivalirudin has shown similar rates of ischemic events while demonstrating a significant reduction in bleeding and an improved net clinical benefit. Evidence from previous studies indicates that pegnivacogin represents an extremely potent, chemically unique anticoagulant that can be reversed by anivamersen across multiple populations (refer to Section 1.2.2). The question that still remains is whether Factor IX (FIX) inhibition by pegnivacogin can result in fewer ischemic events than a previously studied agent while active control with anivamersen can preserve the benefit of reduced bleeding. The purpose of this study is to evaluate REG1 in an adequately powered definitive study with an open-label, multi-center, active-controlled, randomized design to answer that question.