Clinical Research Directory
Browse clinical research sites, groups, and studies.
Stroke and Systemic Embolism Prevention in Adult Participants With Atrial Fibrillation
Sponsor: Regeneron Pharmaceuticals
Summary
This study is researching an experimental drug called REGN7508 (called "study drug") and how it compares against another treatment called apixaban. The study is focused on people who have atrial fibrillation, which means that the heart beats too fast and unevenly. The aim of the study is to see how safe and effective REGN7508 is in preventing stroke and/or systemic embolism in participants with atrial fibrillation and how it compares against participants that will receive apixaban in this study. The study is looking at several other research questions, including: * What side effects may happen from taking the study drug * Whether the body makes antibodies against the study drug (which could make the study drug less effective or could lead to side effects)
Official title: A Phase 3, Randomized, Multicenter, Double-blind Study to Assess Stroke and Systemic Embolism Prevention With REGN7508, a Monoclonal Antibody Against Factor XI, Versus Apixaban in Participants With Atrial Fibrillation (ROXI-EVEREST)
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
15364
Start Date
2026-08-10
Completion Date
2029-12-10
Last Updated
2026-08-25
Healthy Volunteers
No
Conditions
Interventions
REGN7508
Administered per the protocol
Apixaban
Administered per the protocol
Placebo
Administered per the protocol
Locations (8)
SEC Clinical Research
Dothan, Alabama, United States
Radin Cardiovascular Medical Group
Newport Beach, California, United States
Southern California Heart Specialists
Pasadena, California, United States
Sec Clinical Research
Pensacola, Florida, United States
Monroe Research, LLC
West Monroe, Louisiana, United States
PharmaTex Research
Amarillo, Texas, United States
West Houston Area Clinical Trial Consultants, LLC
Houston, Texas, United States
Permian Research Foundation
Odessa, Texas, United States