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ZB002

Phase 1

Healthy Volunteers | Small molecule | Immunology |Zenas BioPharma, Inc.|Last Updated: Apr 8, 2025

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-BlindCONTROLLEDBiomarker
Total Trials1
Total Enrollment72
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05638854A Study to Evaluate Safety and Pharmacokinetics of ZB002 in Healthy Participants and Participants With Rheumatoid ArthritisPHASE1 RECRUITING 72Dec 8, 2022Jul 1, 2025Apr 8, 20252 Australia, New Zealand
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Study Endpoints
Primary Endpoints
Part A: Safety and Tolerability in HVs
Day 1 through Day 120

To evaluate the safety and tolerability of ZB002 in HVs by assessing the number, severity and type of adverse events, including changes in laboratory safety test and electrocardiogram (ECG)

Part B: Safety and Tolerability of multiple doses of ZB002 in participants with RA
Day 1 through Day 176

To evaluate the safety and tolerability of ZB002 in participants with RA by assessing the number of participants with Treatment-emergent adverse events (TEAEs), serious TEAEs, and TEAE leading to discontinuation

Secondary Endpoints
Part A: Maximum observed serum concentration (Cmax)
Day 1 through Day 120
Part A: Time for Cmax (Tmax)
Day 1 through Day 120
Part A: Area under the concentration-time curve from time zero extrapolated to infinity (AUCinf)
Day 1 through Day 120
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part A: SAD in Healthy VolunteersEXPERIMENTALHealthy volunteers will receive a single dose of ZB002 or placebo
Part B: MAD in RA ParticipantsEXPERIMENTALRA participants will receive ZB002 or placebo every 4 weeks (Q4W) × 3 administrations
Interventions
NameTypeDescription
ZB002DRUGZB002 will be administered subcutaneously as per schedule specified in the respective arm.
PlaceboDRUGPlacebo will be administered subcutaneously as per schedule specified in the respective arm.
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Eligibility Criteria
Age Range18 Years — 70 Years
SexALL
Healthy VolunteersYes
Study Sites2

Main Inclusion Criteria Part A SAD (HV): * Healthy male or female participants 18 to 55 years of age. * Body weight ≥ 50 kg for male participants and ≥ 45 kg for female participants; body mass index of 18 to 35 kg/m\^2 for both male and female participants. * Considered in good health as determine...

Countries:AustraliaNew Zealand
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05638854primaryCompletionDate: changed
LOWMay 24, 2026NCT05638854studyFirstPostDate: changed