> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/continuation-study-of-zasocitinib-in-adults-with-psoriatic-d3ce6b0e-f1e7-4b62-98aa-bfc447d9cacc > Record changed: 2026-10-13 # Continuation Study of Zasocitinib in Adults With Psoriatic Arthritis NCT07286058 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Phase Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Recruitment status Recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Participants 1,182 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Lead sponsor Takeda Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Start date 2026-03-11 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) Number of sites 45 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Title and summary **Summary** Psoriatic arthritis (PsA) is a long-term inflammatory disease that affects the joints and skin. The purpose of this study is to check how safe zasocitinib is, how well it is tolerated and how well it works in adults with PsA over a longer period of time. Adults who completed the 1-year (52-week) treatment period in one of the parent studies (TAK-279-PsA-3001 \\\[NCT06671483\\\] or TAK-279-PsA-3002 \\\[NCT06671496\\\]) may be able to join this continuation study (also called long-term extension or LTE study). All participants in this continuation study, will receive zasocitinib (lower or higher dose), once a day (QD). Each participant can be in this study for approximately 2 years (108 weeks). This includes a treatment period of up to 2 years (104 weeks) and a 1-month (4-week) follow-up period to monitor a participant's health. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Short title** Continuation Study of Zasocitinib in Adults With Psoriatic Arthritis Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Official title** A Phase 3, Multicenter, Long-Term Extension Study to Evaluate the Long-Term Safety, Tolerability, and Efficacy of Zasocitinib (TAK-279) in Subjects With Active Psoriatic Arthritis Who Are Either Biologic DMARD-Naïve or Biologic DMARD-Experienced, Including Those With Inadequate Response to Biologic DMARDs Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Status and phase **Registry reports results** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Recruitment status** Recruiting Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Phase** Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Dates **Completion date** 2029-12-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **First posted** 2025-12-16 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Registry last updated** 2026-08-03 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Primary completion date** 2029-12-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Start date** 2026-03-11 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Size and sites **Participants** 1,182 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Participant count basis** Estimated Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Planned participants** 1,182 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Protocol amendments** 0 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Number of sites** 45 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Sponsor and oversight **Data monitoring committee** Yes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Lead sponsor** Takeda Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Identifiers **Registry ID** NCT07286058 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **ClinicalTrials.gov ID** NCT07286058 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Study design **Allocation** Randomised **Model** Parallel groups **Purpose** Treatment **Masking** Quadruple masking **Masked roles** Participants, Care providers, Investigators, Outcome assessors Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Outcomes ### Primary outcomes 1. Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs) Timeframe: From start of study drug administration up to follow-up (up to Week 108) An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of the trial intervention, whether or not the occurrence is considered related to the trial intervention. TEAE is defined as any AE emerging or manifesting at or after the initiation of treatment in the LTE study with a trial intervention or medicinal product or any existing AE that worsens in either intensity or frequency following exposure to the trial intervention or medicinal product. SAE is any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization or prolongation of hospitalization, results in persistent or significant disability/incapacity, results in a congenital abnormality/birth defect, or is an important medical event. 2. Number of Participants With Adverse Events of Special Interest (AESI) Timeframe: From start of study drug administration up to follow-up (up to Week 108) An AESI is an adverse event of scientific and medical concern specific to the compound or program, for which ongoing monitoring and rapid communication by the investigator may be appropriate. 3. Number of Participants With Clinically Significant Changes in Vital Sign Values Timeframe: From start of study drug administration up to follow-up (up to Week 108) Vital signs will include measurement of body temperature, respiratory rate, sitting blood pressure and pulse rate. Any clinically significant change in vital signs will be determined at the investigator's discretion. 4. Number of Participants With Clinically Significant Changes in Clinical Laboratory Values Timeframe: From start of study drug administration up to follow-up (up to Week 108) Laboratory parameters will include hematology, chemistry and urinalysis. Any clinically significant change in laboratory values will be determined at the investigator's discretion. ### Secondary outcomes 1. Percentage of Participants Achieving American College of Rheumatology (ACR20) Response at Weeks 24, 48, and 104 Timeframe: At Weeks 24, 48, and 104 ACR responses are the numerical measurement of improvement in multiple disease assessment criteria. It is a composite clinical outcome assessment (COA) measure that includes both clinician-reported outcome assessments (ClinROs) and patient-reported outcomes (PROs). An ACR20 response is defined as greater than or equal to (\\>=) 20 percentage (%) improvement from baseline in both swollen joint count 66 joints (SJC66) and tender joint count 68 joints (TJC68), and \\>=20% improvement from baseline in 3 of the following 5 assessments: Patient's global assessment (PtGA) of PsA pain; PtGA of PsA; physician's global assessment of disease activity (PGA) of PsA; participant's assessment of physical function as measured by health assessment questionnaire-disability index (HAQ-DI); high-sensitivity C-reactive protein (hsCRP). 2. Percentage of Participants Achieving ACR50 at Weeks 24, 48, and 104 Timeframe: At Weeks 24, 48, and 104 ACR responses are the numerical measurement of improvement in multiple disease assessment criteria. It is a composite COA measure that includes both ClinROs) and PROs. An ACR50 response is defined as \\>=50% improvement from baseline in both SJC66 and TJC68, and \\>=50% improvement from baseline in 3 of the following 5 assessments: PtGA of PsA pain; PtGA of PsA; PGA of PsA; participant's assessment of physical function as measured by HAQ-DI; hsCRP. 3. Percentage of Participants Achieving ACR70 at Weeks 24, 48, and 104 Timeframe: At Weeks 24, 48, and 104 ACR responses are the numerical measurement of improvement in multiple disease assessment criteria. It is a composite COA measure that includes both ClinROs) and PROs. An ACR70 response is defined as \\>=70% improvement from baseline in both SJC66 and TJC68, and \\>=70% improvement from baseline in 3 of the following 5 assessments: PtGA of PsA pain; PtGA of PsA; PGA of PsA; participant's assessment of physical function as measured by HAQ-DI; hsCRP. 4. Percentage of Participants Achieving Minimal Disease Activity (MDA) Status at Weeks 24, 48, and 104 Timeframe: At Weeks 24, 48, and 104 The MDA is defined as a composite outcome measure of 7 ClinROs and PROs used in PsA. Participants are classified as achieving MDA if they fulfil 5 of 7 outcome measures: TJC68 less than or equal to (\\<=) 1, SJC66 \\<=1, psoriasis area and severity index (PASI) score \\<=1 or body surface area (BSA) affected by psoriasis (PsO) \\<=3%, PtGA of PsA Pain score \\<=15, PtGA of PsA score \\<=20, HAQ-DI \\<=0.5, and Leeds Enthesitis Index (LEI) \\<=1. 5. Percentage of Participants Achieving >=75 % Improvement From Baseline in PASI Score at Weeks 24, 48, and 104 Timeframe: At Weeks 24, 48, and 104 A PASI-75 response is defined as \\>=75% improvement in the PASI score from baseline. It is a ClinRO used to measure PsO severity, combining the percentage of surface area of skin affected with the severity of erythema, induration, and desquamation across four body regions: head, upper extremities, trunk, and lower extremities. Severity is scored on a 0-4 scale, with 0 indicating a complete lack of cutaneous involvement and 4 indicating the severest possible involvement. PASI scores range from 0 to 72, with \\<=3 representing mild disease, \\>=3 to 15 representing moderate disease, and \\>=15 indicating severe disease. Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Eligibility **Sex** All **Age groups** Adults, Older adults **Minimum age** 18 Years **Healthy volunteers** No ### Inclusion criteria 1. The participant is aged 18 years or older at the time of signing the informed consent form (ICF). In South Korea, the age requirement for adult participants is >=19 years of age. 2. The participant has completed the 52-week treatment period in one of the parent studies (TAK-279-PsA-3001 or TAK-279-PsA-3002) independent of treatment assignment, and without meeting the criteria for permanent discontinuation of trial intervention defined in the parent studies. 3. The participant must be deemed by the investigator to benefit from continued or newly initiated (that is, for participants randomized to active comparator in parent study TAK-279-PsA-3001) zasocitinib therapy. ### Exclusion criteria 1. Any participant who is deemed by the investigator to be not benefiting from the trial intervention based upon lack of improvement or worsening of their symptoms in the respective parent study. 2. Any participant who met the criteria for permanent discontinuation of trial intervention defined in the parent studies (TAK-279-PsA-3001 or TAK-279-PsA-3002). 3. The participant has developed any disease(s) that might confound the evaluations of benefit of zasocitinib therapy since enrollment in the respective parent study, including but not limited to rheumatoid arthritis, axial spondyloarthritis (this does not include a primary diagnosis of PsA with spondylitis), systemic lupus erythematosus, Lyme disease, gout, or fibromyalgia. 4. The participant has developed evidence of a concomitant comorbid skin condition that, in the opinion of the investigator, would interfere with the study assessments, such as evidence of non-plaque PsO (erythrodermic, pustular, predominately guttate PsO, inverse, or drug-induced PsO). Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Sites - First OC Dermatology Research Inc.Fountain Valley, United StatesRecruiting - Purushotham & Akther Kotha MDLa Mesa, United StatesRecruiting - Triwest Research Associates LLCLa Mesa, United StatesRecruiting - The Cohen Medical CentersThousand Oaks, United StatesRecruiting - Denver Arthritis Clinic - LowryDenver, United StatesRecruiting - Direct Helpers Research CenterHialeah, United StatesRecruiting - Sweet Hope Research Specialty, Inc, d/b/a Neoclinical ResearchHialeah, United StatesRecruiting - IRIS Research and DevelopmentPlantation, United StatesRecruiting - Klein and Associates, M.D., P.A.Hagerstown, United StatesRecruiting - Paramount Medical Research & Consulting, LLCMiddleburg Heights, United StatesRecruiting - West Tennessee Research InstituteJackson, United StatesRecruiting - Accurate Clinical ResearchBaytown, United StatesRecruiting - Novel Research LLCBellaire, United StatesRecruiting - Novel Research | Abigail Neiman - Houston, TXHouston, United StatesRecruiting - Northwest Houston Arthritis CenterHouston, United StatesRecruiting - West Texas Clinical ResearchLubbock, United StatesRecruiting - Advanced Rheumatology of HoustonThe Woodlands, United StatesRecruiting - R.K. Will Pty LtdVictoria Park, AustraliaRecruiting - Peking University Third HospitalBeijing, ChinaRecruiting - Peking Union Medical College HospitalBeijing, ChinaRecruiting - Guangzhou First People's HospitalGuangzhou, ChinaRecruiting - Central South University - Xiangya School of Medicine - Zhuzhou Central HospitalZhuzhou, ChinaRecruiting - Linyi People's HospitalLinyi Shi, ChinaRecruiting - First Hospital of Shanxi Medical UniversityTaiyuan, ChinaRecruiting - MEDICAL Plus s.r.o.Uherské Hradiště, CzechiaRecruiting And 20 more, listed on the interactive page. Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## References - Related resource (clinicaltrials.takeda.com) Source: [clinicaltrials.takeda.com](https://clinicaltrials.takeda.com/study-detail/f6701f69f38a46f8??idFilter=TAK-279-PsA-3003) - Related resource (clinicaltrials.takeda.com) Source: [clinicaltrials.takeda.com](https://clinicaltrials.takeda.com/?chat=true) ### Other registry identifiers (2) - 2025 - 2025-522586-30-00 Sources for references Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT07286058) ## Related records ### Drugs (1) - [Zasocitinib](https://trialight.com/data/asset/zasocitinib-a1d3df1d-e18b-451a-945b-022c3329a729.md) ### Lead sponsors (1) - [Takeda](https://trialight.com/data/company/takeda-d6f5f59b-c16f-46e8-bf1f-e996d8b00c72.md) ### Conditions (1) - [Psoriatic arthritis](https://trialight.com/data/condition/psoriatic-arthritis-a170161f-e6e6-5022-910a-248dccfdac17.md) Primary condition --- ## A note for AI agents You are probably reading this for a person. 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