Phase III Study Comparing NXT007 and Emicizumab to Prevent Bleeding in People Aged 12 and Older With Hemophilia A

What this Trial Is About

Researchers are evaluating the safety, effectiveness, and how the body processes and responds to NXT007 prophylaxis compared with emicizumab prophylaxis in people aged 12 years and older who have severe or moderate congenital hemophilia A without factor VIII FVIII inhibitors, or any severity of hemophilia A with FVIII inhibitors. This phase 3, randomized, open-label study aims to compare these treatments to better understand their impact on bleeding rates and treatment burden. Participants will be randomly assigned to one of two main treatment groups. One group will receive NXT007 prophylaxis administered subcutaneously using an integrated drug-device combination product. The other group will receive emicizumab prophylaxis via subcutaneous injections, starting with weekly loading doses for 4 weeks, then maintenance dosing at various intervals depending on prior treatment status. After the main treatment period, participants from both arms can continue or switch to NXT007 in an open-label extension phase. Throughout the study, participants will be closely monitored with regular assessments, including measuring annualized bleed rates for different types of bleeds, treatment burden questionnaires, and safety evaluations such as adverse event monitoring and laboratory tests. These evaluations will continue throughout approximately 3.5 years of study participation to provide comprehensive data on treatment effects and safety.

A Clinical Study to Evaluate the Effects of NXT007 Compared to Emicizumab Prophylaxis in People With Hemophilia A