A Study of Zasocitinib in Adults With Psoriatic Arthritis Who Have Not Taken Biologic Medicines
Eligible age
18+ yrs
Accepts
All genders
Locations
19 states
Healthy volunteers
No
See if you qualify for this study
Answer a few quick questions about your location and health. Takes about a minute.
About this study
Psoriatic arthritis (PsA) is a chronic inflammatory disease that affects the joints and skin in people who have psoriasis (PsO). The main aim of the study is to know how well zasocitinib (TAK-279) works in participants with active PsA who have not previously been treated with biologic disease-modifying antirheumatic drugs. The participants will be treated with either zasocitinib, active comparator, or placebo. Participants will be in the study for up to 60 weeks.
Sponsor: Takeda
You may qualify if…
- ✓ Age:
- ✓ 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.
- ✓ Disease Characteristics:
- ✓ 2. The participant has a diagnosis of PsA.
- ✓ 3. The participant must have signs and symptoms of PsA for at least 3 months prior to screening.
- ✓ 4. The participant meets the Classification Criteria for Psoriatic Arthritis (CASPAR criteria).
- ✓ 5. The participant has active arthritis as shown by a minimum of \>=3 tender joints in TJC68 and \>=3 swollen joints in SJC66 at the screening and baseline (Day 1) visits.
- ✓ 6. The participant has at least 1 active lesion of plaque PsO \>=2 cm in diameter, or any nail or nail bed changes characteristic of PsO.
You may not qualify if…
- ✕ PsA and PsO:
- ✕ 1. The participant has other disease(s) that might confound the evaluations of benefit of zasocitinib therapy, including but not limited to rheumatoid arthritis, axial spondyloarthritis, systemic lupus erythematosus, Lyme disease, gout, or fibromyalgia.
- ✕ 2. The participant has 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).
Where it's recruiting
Chandler · Phoenix
Fountain Valley · La Mesa · Thousand Oaks · Tujunga …
Denver
Aventura · Boca Raton · Clearwater · Cooper City …
Marietta
Orland Park · Schaumburg
Lake Charles
Hagerstown
Detroit · Grand Blanc · Howell · Lansing …
St Louis
Albuquerque · Santa Fe · Vila Nova de Gaia
Brooklyn
Source: ClinicalTrials.gov · NCT06671483 · last updated 2026-06-02