Study of BB-031 in Acute Ischemic Stroke Patients (RAISE)

This is a two-part, randomized, placebo-controlled, double-blinded study in acute ischemic stroke patients. In Part A, up to 48 participants will be randomized in a 3:1 ratio (investigational drug: placebo) into 1 of 3 planned ascending dose groups to determine the dose levels to be studied in Part B. Two dose levels will be chosen based upon a review of all available data including safety, PK, PD and preliminary efficacy. In Part B, approximately 180 participants will be randomized to receive a single dose of two sequential dose levels of study drug or placebo.

All participants will be screened for participation after confirmed diagnosis of an anterior circulation ischemic stroke by neurovascular imaging. Enrolled participants will be followed for 90 days. Radiological outcomes will be assessed by a central blinded reviewer. A Data Safety Monitoring Committee will review safety and preliminary efficacy data throughout the study as outlined in the protocol.