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Ravulizumab

Phase 3

Paroxysmal Nocturnal Hemoglobinuria | Small molecule | Other |Regeneron Pharmaceuticals, Inc.|Last Updated: Apr 30, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment202
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05133531A 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 TreatmentPHASE3 ACTIVE NOT_RECRUITING 202Aug 1, 2022Oct 26, 2026Apr 30, 202668 United States, Brazil +22
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Study Endpoints
Primary Endpoints
Percent change in lactate dehydrogenase (LDH)
From baseline to week 26

Cohort A

Transfusion avoidance
From post-baseline day 1 through week 26

Cohort B Not requiring a red blood cell (RBC) transfusion per the protocol

Adequate control of hemolysis
From week 8 through week 26, inclusive

Cohort B LDH ≤1.5 × ULN at each visit

Secondary Endpoints
Maintenance of adequate control of hemolysis
From week 8 through week 26, inclusive
Breakthrough hemolysis
From post-baseline day 1 through week 26
Adequate control of hemolysis
From week 8 through week 26, inclusive
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort AEXPERIMENTALRandomized 1:1
Cohort BEXPERIMENTALRandomized 1:1
Interventions
NameTypeDescription
RavulizumabDRUGAdministered Intravenous (IV) per the protocol
PozelimabDRUGAdministered IV and subcutaneous (SC) per the protocol
CemdisiranDRUGAdministered SC per the protocol
EculizumabDRUGAdministered IV per the protocol
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites68

Key Inclusion Criteria: 1. Diagnosis of PNH confirmed by high-sensitivity flow cytometry testing with PNH granulocytes or monocytes as described in the protocol 2. Active disease, as defined by the presence of 1 or more PNH-related signs or symptoms as described in the protocol 3. LDH level ≥2 × UL...

Countries:United StatesBrazilCanadaChinaColombiaGreeceHungaryIndiaItalyJapanJordanMalaysiaMexicoPeruPhilippinesPolandRomaniaSingaporeSouth KoreaSpainTaiwanThailandTurkey (Türkiye)United Kingdom
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT05133531Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWMay 24, 2026NCT05133531studyFirstPostDate: changed