Last Updated: August 9, 2026

CLINICAL TRIALS PROFILE FOR ECULIZUMAB


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Biosimilar Clinical Trials for eculizumab

This table shows clinical trials for biosimilars. See the next table for all clinical trials
Trial ID Title Status Sponsor Phase Start Date Summary
NCT04058158 ↗ A Study to Compare SB12 (Proposed Eculizumab Biosimilar) to Soliris in Subjects With Paroxysmal Nocturnal Haemoglobinuria Completed Samsung Bioepis Co., Ltd. Phase 3 2019-08-07 This is a randomised Phase III, double-blind, multicentre, cross-over study to compare the efficacy, safety, pharmacokinetics, and immunogenicity between SB12 and SolirisĀ® in subjects with PNH.
NCT07154745 ↗ 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 NOT_YET_RECRUITING Regeneron Pharmaceuticals PHASE3 2025-10-25 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 not gotten better 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)
>Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for eculizumab

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00098280 ↗ Eculizumab to Treat Paroxysmal Nocturnal Hemoglobinuria Completed National Heart, Lung, and Blood Institute (NHLBI) Phase 3 2004-12-01 This study will examine the safety and effectiveness of the experimental drug eculizumab in treating patients with paroxysmal nocturnal hemoglobinuria (PNH), a rare disorder of red blood cells that leads to premature destruction of the cells and resulting anemia. Patients may be at high risk of blood clots and may develop bone marrow failure or aplastic anemia, with low white blood cell and platelet counts. Eculizumab is a monoclonal antibody that may help improve the survival of red blood cells. Patients 18 years of age and older with PNH who require blood transfusions for anemia and have received at least four transfusions in the 12 months preceding evaluation for this study may be eligible to enroll. Candidates are screened with a medical history, physical examination, and check of vital signs. Participants have an electrocardiogram (EKG) and blood and urine tests, and are vaccinated against Neisseria meningitides, a common bacteria that can cause a disabling or fatal type of meningitis. They then enter an observation phase of the study, with monthly visits during which they complete a questionnaire; update their health status, transfusion record, and medication use; have their vital signs checked and PNH symptoms evaluated; have blood and urine tests; and receive a transfusion, if necessary. These visits continue for up to 3 months until patients receive a "qualifying" transfusion; that is, a transfusion given as a consequence of a certain hemoglobin level with symptoms or a different level without symptoms. Patients are then randomly assigned to receive either eculizumab or a placebo (salt solution with no active ingredient). Both study medications are given intravenously (through a vein) over 30 minutes once a week for five doses and then once every 2 weeks for another 11 doses. At each treatment visit (study weeks 0-24), patients update their health status, transfusion records, and medication use; have their vital signs checked; and provide a blood sample. At various visits, they also complete a questionnaire, provide a urine sample and have an EKG. At the last treatment visit (week 26 or the final visit for patients who end their participation before visit 18) patients have a complete physical examination in addition to the procedures listed above.
NCT00122304 ↗ Study of Safety in Hemolytic Paroxysmal Nocturnal Hemoglobinuria (PNH) Patients Treated With Eculizumab Completed Alexion Pharmaceuticals Phase 3 2004-12-01 The primary objective is to evaluate the safety of eculizumab in patients with transfusion-dependent hemolytic PNH
NCT00122317 ↗ Extension Study of Eculizumab in Patients With Transfusion Dependent Paroxysmal Nocturnal Hemoglobinuria (PNH) Completed Alexion Pharmaceuticals Phase 3 2005-05-01 The purpose of this study is to evaluate the long-term safety of eculizumab in patients with transfusion dependent hemolytic PNH.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for eculizumab

Condition Name

Condition Name for eculizumab
Intervention Trials
Paroxysmal Nocturnal Hemoglobinuria 20
Atypical Hemolytic Uremic Syndrome 8
Paroxysmal Nocturnal Hemoglobinuria (PNH) 7
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Condition MeSH

Condition MeSH for eculizumab
Intervention Trials
Hemoglobinuria, Paroxysmal 37
Hemoglobinuria 32
Syndrome 19
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Clinical Trial Locations for eculizumab

Trials by Country

Trials by Country for eculizumab
Location Trials
United States 242
Japan 55
Italy 54
France 37
Australia 32
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Trials by US State

Trials by US State for eculizumab
Location Trials
California 21
New York 19
Maryland 16
Texas 14
Ohio 14
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Clinical Trial Progress for eculizumab

Clinical Trial Phase

Clinical Trial Phase for eculizumab
Clinical Trial Phase Trials
PHASE4 1
PHASE3 8
PHASE2 4
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Clinical Trial Status

Clinical Trial Status for eculizumab
Clinical Trial Phase Trials
Completed 47
RECRUITING 17
Not yet recruiting 13
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Clinical Trial Sponsors for eculizumab

Sponsor Name

Sponsor Name for eculizumab
Sponsor Trials
Alexion Pharmaceuticals 45
Regeneron Pharmaceuticals 4
Mayo Clinic 3
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Sponsor Type

Sponsor Type for eculizumab
Sponsor Trials
Industry 87
Other 54
NIH 6
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