Phase 3 Study Comparing Elritercept to Placebo for Adults with Myelofibrosis and Anemia Taking Ruxolitinib

What this Trial Is About

Researchers are evaluating how well elritercept works to improve anemia in adults with myelofibrosis MF who are already taking ruxolitinib. The study compares elritercept to a placebo and aims to see if elritercept can reduce tiredness, improve MF-related symptoms, and help participants perform physical activities more easily. It also looks at elritercepts effects on bone marrow, spleen size, antibody development, and long-term safety. Participants receive either elritercept or a placebo by subcutaneous injection once every 4 weeks during a 36-week double-blinded treatment period. The starting dose of elritercept is 3.75 mgkg, with a possible increase to 5.0 mgkg after the second cycle based on response and safety. After 36 weeks, participants who took placebo may switch to receive elritercept in an extended open-label phase. During the study, participants undergo assessments including blood transfusion independence, symptom and fatigue questionnaires, spleen imaging, and bone marrow evaluation. Researchers monitor safety, antibody formation, and survival for up to 7 years. The main outcome is the proportion of participants who become independent from red blood cell transfusions for at least 12 consecutive weeks during the 36-week treatment. Participants are involved in regular visits and evaluations throughout the treatment and follow-up periods.

A Study to Compare Elritercept to Placebo in Adults With Myelofibrosis and Anemia Who Are Taking Ruxolitinib