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Zasocitinib

Phase 3

Plaque Psoriasis | Small molecule | Immunology |Takeda Pharmaceutical Company Limited|Last Updated: May 8, 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-BlindACTIVE_CONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment716
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07250802A Long-Term Study of Zasocitinib in Children and Teenagers With Plaque PsoriasisPHASE3 RECRUITING 110Dec 4, 2025Jan 24, 2033May 8, 202640 United States, China +5
NCT06973291A Study Comparing Zasocitinib (TAK-279) With Deucravacitinib in Adults With Plaque PsoriasisPHASE3 COMPLETED 606Jul 9, 2025Apr 22, 2026May 1, 2026113 United States, Bulgaria +6
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Study Endpoints
Primary Endpoints
Part A: Percentage of Participants Achieving a Static Physician's Global Assessment (sPGA) of Clear (0) or Almost Clear (1) With a Greater than or Equal to (>=) 2-Point Decrease From Baseline at Week 16
At Week 16

The sPGA is an assessment by the investigator of the overall disease severity at the time of evaluation. Erythema (E), induration (I), and desquamation (D) are scored on a 5-point scale ranging from 0 (none) to 4 (severe). The sPGA composite score ranges from 0 to 4 and is calculated as Clear (0) = 0 for all three; Almost clear (1) = mean greater than (\>) 0, less than (\<) 1.5; Mild (2) = mean \>= 1.5, \<2.5; Moderate (3) = mean \>=2.5, \<3.5; and Severe (4) = mean \>=3.5. The percentage of participants achieving an sPGA of Clear (0) or Almost Clear (1) with a \>= 2-point decrease from baseline at Week 16 will be reported.

Part A: Percentage of Participants Achieving >= 75 Percent (%) Improvement From Baseline in Psoriasis Area and Severity Index (PASI) Score at Week 16
At Week 16

The PASI is a measure of the average redness, thickness and scaliness of psoriatic skin lesions (each graded on a 0 to 4 scale; 0 = none to 4 = very severe), weighted by the area of involvement (head, upper extremities, trunk, and lower extremities). The PASI score ranges from 0 to 72, with higher PASI scores denoting more severe disease activity (less than or equal to \[\<=\] 3 representing mild disease, \>= 3 to 15 representing moderate disease, and \>= 15 indicating severe disease). The PASI-75 is defined as 75% improvement from baseline in PASI score. The percentage of participants achieving \>= 75% improvement from baseline in PASI score at Week 16 will be reported.

Part B: Maximum Observed Plasma Concentration (Cmax) of Zasocitinib
Pre-dose and Post-dose on Day 7

Cmax of zasocitinib in plasma will be assessed.

Part B: Time to Maximum Concentration (Tmax) of Zasocitinib
Pre-dose and Post-dose on Day 7

Tmax of zasocitinib in plasma will be assessed.

Part B: Area Under the Concentration-Time Curve From Time 0 to the Time of Last Quantifiable Concentration (AUC0-Last) of Zasocitinib
Pre-dose and Post-dose on Day 7

AUC0-Last of zasocitinib in plasma will be assessed.

Percentage of Participants Achieving Psoriasis Area and Severity Index (PASI)-100 at Week 16
At Week 16

PASI is a measure of the average erythema, induration/infiltration, and desquamation/scaling of psoriatic skin lesions (each graded on a 0 to 4 scale; 0 = none to 4 = very severe), weighted by the area of involvement (head, upper extremities, trunk, and lower extremities). The PASI produces a numeric score that can range from 0 to 72 (less than or equal to \[\<=\] 3 representing mild disease, greater than or equal to \[\>=3\] to 15 representing moderate disease, and \>=15 indicating severe disease) with higher PASI scores denoting more severe disease activity. Percentage of participants showing 100 percentage (%) improvement in PASI score relative to baseline PASI score will be reported.

Secondary Endpoints
Part A: Percentage of Participants Achieving PASI-90 Response at Week 16
At Week 16
Part A: Percentage of Participants Achieving an Enhanced sPGA Response of Clear (0) at Week 16
At Week 16
Part A: Percentage of Participants Achieving PASI-100 Response at Week 16
At Week 16
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part A (Cohort 1): Zasocitinib (Dose A)EXPERIMENTALParticipants (Adolescent) aged 12 to less than (\<)18 years will receive zasocitinib Dose A once daily (QD), orally, from Week 1 to Week 16 during the double-blind placebo-controlled period followed by zasocitinib, from Week 16 to Week 208 during the open-label period.
Part A (Cohort 2): Zasocitinib (Multiple Doses)EXPERIMENTALParticipants (Children) aged 4 to \<12 years will receive zasocitinib, orally, doses based on weight, from Week 1 to Week 16 during the double-blind placebo-controlled period followed by zasocitinib from Week 16 to Week 208 during the open-label period.
Part A (Cohort 1 and Cohort 2): PlaceboPLACEBO_COMPARATORParticipants in Cohort 1 (Adolescent aged 12 to \<18 years) and Cohort 2 (Children aged 4 to \<12 years) will receive zasocitinib matching placebo QD from Week 1 to Week 16 during the double-blind placebo-controlled period.
Part B: Zasocitinib (Multiple Doses)EXPERIMENTALParticipants (Children) aged 4 to \<12 years will receive zasocitinib, orally, doses based on weight, from Week 1 to Week 208 during the open-label period.
Zasocitinib or PlaceboEXPERIMENTALParticipants will receive zasocitinib or matching placebo tablet, orally, once daily (QD) up to Week 16.
Deucravacitinib or PlaceboACTIVE_COMPARATORParticipants will receive deucravacitinib 6 mg or matching placebo capsule, orally, QD up to Week 16.
Interventions
NameTypeDescription
ZasocitinibDRUGZasocitinib.
PlaceboDRUGZasocitinib matching placebo.
DeucravacitinibDRUGDeucravacitinib capsules.
Placebo to match zasocitinibDRUGZasocitinib matching placebo tablets.
Placebo to match deucravacitinibDRUGDeucravacitinib matching placebo capsules.
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Eligibility Criteria
Age Range4 Years — 17 Years
SexALL
Healthy VolunteersNo
Study Sites40

Inclusion Criteria: 1. Participant has a diagnosis of chronic plaque psoriasis for greater than or equal to (\>=) 6 months prior to the screening visit. 2. Participant has stable plaque psoriasis defined as no significant flare or change in morphology (as assessed by the investigator) in psoriasis ...

Countries:United StatesChinaGermanyItalyJapanPolandSpainBulgariaCanadaCzechiaFranceLatvia
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Recent Changes (Last 90 Days)
MEDIUMJun 1, 2026NCT06973291TRIAL_REMOVED: changed
MEDIUMJun 1, 2026NCT06973291TRIAL_REMOVED: changed
MEDIUMJun 1, 2026NCT06973291TRIAL_REMOVED: changed
LOWMay 26, 2026NCT07250802primaryCompletionDate: changed
HIGHMay 26, 2026NCT06973291Status: ACTIVE_NOT_RECRUITING → COMPLETED
LOWMay 24, 2026NCT07250802studyFirstPostDate: changed
LOWMay 24, 2026NCT06973291studyFirstPostDate: changed