A Phase 2, Multicenter, Randomized, Placebo-Controlled, Double-Blind, Dose-Ranging Trial to Evaluate the Efficacy and Safety of Zasocitinib in Participants With Nonsegmental Vitiligo

Summary

Vitiligo is a long-term autoimmune condition that causes the skin to lose its color. The body's germ-fighting system (immune system) mistakenly attacks the skin cells (melanocytes) which produce the pigment that gives the skin color (melanin). This leads to the formation of patches of skin with less or no pigment (depigmentation). These patches can occur anywhere on the body. In the nonsegmental form of vitiligo, similar patches occur on both sides of the body (symmetrical patches). The main aim of this study is to learn how safe zasocitinib is, how well it works and how well it is tolerated by adults with nonsegmental vitiligo. The participants will receive the study treatment (either zasocitinib or placebo) for up to 1 year (52 weeks). The placebo looks like the zasocitinib capsule but does not have any medicine in it. Participants who receive placebo at the beginning will change to zasocitinib after about 6 months. During the study, participants will visit their study clinic 11 times.

Eligibility

Age range

18–75 years

Sex

All

Healthy volunteers

No

Interventions

• Drug
  Zasocitinib

  Zasocitinib capsules.

• Other
  Placebo

  Zasocitinib matching placebo capsules.

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