at Los Angeles, California and other locations
study started
completion around
Principal Investigator
by Caspian Oliai



A study designed to evaluate the safety of crovalimab with eculizumab in participants with PNH currently treated with complement inhibitors. This study will enroll approximately 190 participants.

Official Title

A Phase III, Randomized, Open-Label, Active-Controlled, Multicenter Study Evaluating The Safety, Pharmacokinetics, Pharmacodynamic And Efficacy of Crovalimab Versus Eculizumab In Patients With Paroxysmal Nocturnal Hemoglobinuria (PNH) Currently Treated With Complement Inhibitors


Paroxysmal Nocturnal Hemoglobinuria, Hemoglobinuria, Paroxysmal Hemoglobinuria, Eculizumab, Crovalimab, Crovalimab) (Exploratory


You can join if…

  • Body weight >= 40 kg at screening.
  • Treated with eculizumab or ravulizumab for PNH for at least 3 months prior to Day 1.
  • Lactate Dehydrogenase Levels =< 2x the upper limit of normal (ULN) at screening.
  • Willingness and ability to comply with all study visits and procedures.
  • Documented diagnosis of PNH, confirmed by high sensitivity flow cytometry.
  • Vaccination against Neisseria meningitidis serotypes A, C, W, and Y < 3 years prior to initiation of study treatment; or, if not previously done, vaccination administered no later than one week after the first drug administration.
  • Women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraception during the treatment period and for 10.5 months after the final dose of crovalimab or for 3 months after the final dose of eculizumab (or longer if required by the local product label).

You CAN'T join if...

  • History of allogeneic bone marrow transplantation.
  • History of myelodysplastic syndrome with Revised International Prognostic Scoring System (IPSS-R) prognostic risk categories of intermediate, high and very high.
  • Pregnant or breastfeeding, or intending to become pregnant during the study, within 10.5 months after the final dose of crovalimab, or 3 months after the final dose of eculizumab (or longer if required by the local product label).
  • Participation in another interventional treatment study with an investigational agent or use of any experimental therapy within 28 days of screening or within 5 half-lives of that investigational product, whichever was greater: participants enrolled in an eculizumab or ravulizumab interventional study are eligible provided they fulfill eligibility (e.g., are willing and able to comply with the study assessments) and stop their participation in current trial before randomisation/enrolment.
  • Positive for Active Hepatitis B and C infection (HBV/HCV).
  • Concurrent disease, treatment, procedure, or surgery or abnormality in clinical laboratory tests that could interfere with the conduct of the study, may pose any additional risk for the participant, or would, in the opinion of the investigator, preclude the participant's safe participation in and completion of the study.
  • History of or ongoing cryoglobulinemia at screening.


  • David Geffen School of Medicine UCLA accepting new patients
    Los Angeles California 90095 United States
  • The Oncology Institute of Hope and Innovation completed
    Anaheim California 92801 United States
  • Cook Childrens Medical Center accepting new patients
    Fort Worth Texas 76104 United States

Lead Scientist at UCLA

  • Caspian Oliai
    HS Assistant Clinical Professor, Medicine. Authored (or co-authored) 23 research publications


accepting new patients
Start Date
Completion Date
Hoffmann-La Roche
Sign up for this study
Phase 3 Paroxysmal Nocturnal Hemoglobinuria Research Study
Study Type
Expecting 190 study participants
Last Updated