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Orelabrutinib

Phase 3

Multiple Sclerosis (MS) Primary Progressive | Small molecule | Immunology |Zenas BioPharma, Inc.|Last Updated: May 29, 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
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment705
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07067463A Study of Orelabrutinib in Patients With Primary Progressive Multiple SclerosisPHASE3 RECRUITING 705Mar 23, 2026Jul 1, 2030May 29, 202611 United States
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Study Endpoints
Primary Endpoints
Time to onset of composite confirmed disability progression (cCDP) , confirmed over at least 12 weeks (12-week cCDP)
Up to approximately 120 weeks

* Expanded disability status scale (EDSS) score increase ≥ 1.0 point from baseline when the baseline score is ≤ 5.0, or ≥ 0.5 points from baseline when the baseline score is \> 5.0, OR * ≥ 20% increase in the Timed 25-Foot Walk Test (T25FWT), OR * ≥ 20% increase in the 9-hole Peg Test (9HPT)

Secondary Endpoints
Time to onset of composite confirmed disability progression (cCDP) , confirmed over at least 24 weeks (24-week cCDP)
Up to approximately 120 weeks
Time to onset of confirmed disability progression (CDP) , confirmed over at least 24 weeks (24-week CDP)
Up to approximately 120 weeks
MRI T2 lesion
Up to approximately 120 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Orelabrutinib GroupEXPERIMENTAL -
Placebo GroupPLACEBO_COMPARATOR -
Interventions
NameTypeDescription
OrelabrutinibDRUGOrally
PlaceboDRUGOrally
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Eligibility Criteria
Age Range18 Years — 60 Years
SexALL
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * 18 to 60 years of age, inclusive * Diagnosed with Primary Progressive MS (PPMS) according to 2017 McDonald criteria * Participant must have documented evidence of disability progression observed during the 24 months before screening. * Expanded disability status scale (EDSS) s...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 29, 2026NCT07067463lastUpdatePostDate: changed
LOWMay 29, 2026NCT07067463lastUpdatePostDate: changed
LOWMay 26, 2026NCT07067463primaryCompletionDate: changed
LOWMay 24, 2026NCT07067463studyFirstPostDate: changed