Phase III Comparison of NXT007 and Factor VIII Prophylaxis for People 12 Years and Older with Severe or Moderate Hemophilia A Without Inhibitors

What this Trial Is About

Researchers are evaluating the effectiveness, safety, and how the body processes and responds to NXT007 prophylaxis compared to Factor VIII FVIII prophylaxis in people aged 12 years and older with severe or moderate congenital hemophilia A who do not have inhibitors. This phase III study focuses on participants who have previously been treated with FVIII prophylaxis. The goal is to understand how NXT007 performs against the current standard treatment for this condition. Participants will be randomly assigned to receive either NXT007 prophylaxis, given as a subcutaneous injection with an integrated drug-device combination product, or standard Factor VIII prophylaxis according to local dosing and frequency guidelines. After the main six-month treatment period, those receiving NXT007 may continue this treatment in an open-label extension, and those initially on FVIII prophylaxis may switch to NXT007 during this extension phase. During the study, participants will be closely monitored through various assessments, including tracking the annualized bleed rate ABR for treated bleeds over six months, questionnaires evaluating treatment burden and impact on social and recreational activities, and safety evaluations such as adverse events, injection-site reactions, and antibody development against NXT007. The study will continue follow-up for approximately 3.5 years to gather comprehensive data on treatment effects and safety.

A Clinical Study to Evaluate the Effects of NXT007 Compared to Factor VIII Prophylaxis in Participants With Hemophilia A