What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Zasocitinib, Active Comparator, or Placebo. The registry lists allocation as randomized. Psoriatic arthritis (PsA) is a chronic inflammatory disease that affects the joints and skin in people who have psoriasis (PsO).
They plan to enroll about 1,088 people at 185 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
A Multi-Center, Randomized, Double-Blind, Placebo- and Active-Controlled Phase 3 Study to Evaluate the Efficacy and Safety of Zasocitinib (TAK-279) in Subjects With Active Psoriatic Arthritis Who Are Naïve to Biologic Disease-Modifying Antirheumatic Drugs (LATITUDE-PsA-3001)
Interventions: Zasocitinib, Active Comparator, Placebo
Primary outcome (registry wording): Percentage of Participants Achieving American College of Rheumatology 20 (ACR20) Response at Week 16 for Zasocitinib Dose A and B Compared to Placebo