A Study to Evaluate How Pozelimab + Cemdisiran Combination Therapy Works in Adult Patients With Paroxysmal Nocturnal Hemoglobinuria (PNH) Whose Current Treatment is Not Working Efficiently (NCT07154745)
A Single Arm Study to Evaluate the Efficacy and Safety of Pozelimab and Cemdisiran Combination Therapy in Patients With Paroxysmal Nocturnal Hemoglobinuria With Inadequate Control of Intravascular Hemolysis on Currently Available C5 Inhibitor Therapy
🩺 Plain-English Summary (8th-Grade Level)
This study is researching a treatment combination with two experimental drugs called pozelimab and cemdisiran referred to as "study drugs". Researchers are looking for a better way to treat Paroxysmal Nocturnal Hemoglobinuria (PNH). The aim of the study is to see how well the pozelimab and cemdisiran combination works to lower hemolysis in participants whose PNH has been not well controlled even after taking other complement component 5 (C5) inhibitors, eculizumab/eculizumab biosimilar, ravulizumab or crovalimab. The study is looking at several other research questions, including: * What side effects may happen from taking the study drugs? * How much of the study drugs are in the blood at different times? * Whether the body makes antibodies against the study drug (which could make the study drugs not work as well or could lead to side effects)
Who can join: Review the eligibility criteria below.
Location: Hospital das Clinicas da FMRP USP — Ribeirão Preto, São Paulo
Age range: 18 Years
🧪 Interventions in This Study
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistFull eligibility criteria are available on the official NIH protocol. View the criteria ↗
📍 All Participating Trial Locations (20 Sites)
- Hospital das Clinicas da FMRP USP — Ribeirão Preto, São Paulo
- Faculdade de Medicina do ABC — Santo André, São Paulo
- Hospital Santa Marcelina — São Paulo,
- CISSS-CA — Lévis, Quebec
- Universita Cattolica del Sacro Cuore - Policlinico Universitario A. Gemelli — Rome, Lazio
- AOU Careggi — Florence, Tuscany
- SC Hematology, AOU Città della Salute e della Scienza di Torino — Torino,
- In-Vivo Sp. z o.o. — Bydgoszcz, Kuyavian-Pomeranian Voivodeship
- Seoul National University Hospital — Seoul,
- Severance Hospital — Seoul,
- Seoul St. Mary's Hospital - The Catholic University of Korea — Seoul,
- Ewha Womans University Mokdong Hospital — Seoul,
- Samsung Medical Center — Seoul,
- Hospital Universitario Basurto — Bilbao, Vizcaya
- Institut Catala d'Oncologia — Barcelona,
- Hospital San Pedro de Alcantara — Cáceres,
- Hospital General JM Morales Meseguer — Murcia,
- Hospital Universitario de Salamanca — Salamanca,
- Istanbul University Istanbul Faculty of Medicine — Istanbul,
- Ege University — Izmir,
📞 Contact the Study Coordinator
Phone: (844) 734-6643
Email: clinicaltrials@regeneron.com
Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.
More studies in Paroxysmal Nocturnal Hemoglobinuria
- Assess Long-Term Safety of Danicopan Add-on Therapy in Participants With Paroxysmal Nocturnal Hemoglobinuria: Analysis of IPIG-Registry Data — Boston, Massachusetts
- A Study Evaluating the Efficacy and Safety of Crovalimab Versus Eculizumab in Participants With Paroxysmal Nocturnal Hemoglobinuria (PNH) Not Previously Treated With Complement Inhibitors — Ciudad Autonoma Buenos Aires,
- Long-term Safety of Danicopan: IPIG Registry-based Cohort Study — Boston, Massachusetts
- A Long-term Safety and Efficacy Study of Danicopan as an Add-on Therapy to Complement Component 5 Inhibitor (C5i) in Participants With PNH — Los Angeles, California
- Long-term Safety and Tolerability of Iptacopan in Patients With Paroxysmal Nocturnal Hemoglobinuria — Duarte, California
- A Study to Evaluate How Safe Pozelimab + Cemdisiran Combination Therapy is and How Well it Works in Adult Patients With Paroxysmal Nocturnal Hemoglobinuria (PNH) Who Have Not Recently Received or Have Not Received Complement Inhibitor Treatment — Whittier, California
Explore by condition: All Paroxysmal Nocturnal Hemoglobinuria clinical trials
💡 How to Participate
- Check the checklist above to see if you may qualify.
- Contact the study coordinator using the phone/email above.
- Ask about the visit schedule, what is covered at no cost, and any travel support.
- Confirm with your own doctor before making a decision.