A Study to Learn About the Study Medicine (Called Ritlecitinib) For the Potential Treatment of Severe Alopecia Areata (AA) In Children 6 To Less Than 12 Years of Age

Summary

The purpose of the study is to evaluate the pharmacokinetics (how the medicine is changed and eliminated from your body after you take it) and pharmacodynamics (effects of the medicine in the body) of the study medicine (called Ritlecitinib) in children of 6 to \<12 years of age with Alopecia Areata, a condition of scalp hair loss. 12 children with alopecia areata will be participating in this study. All participants will receive study medicine with a dose of 20 milligram (mg) orally once daily for 7 days. 5 blood samples will be collected on day 7 for pharmacokinetic evaluation and 2 blood samples each at screening and on Day 7 will be collected for pharmacodynamic evaluation. Participants will take part in the study for about 10 weeks.

Timeline

Start

2023-03-02

Primary completion

2023-08-11

Completion

2023-08-11

Publications

• Gonzalez ME, Browning J, Smith S, Plotka A, Zhu JD, Parvatini S, Huh Y, Wolk R. A Phase 1, Open-Label Study of the Pharmacokinetics of Ritlecitinib in Children Aged 6-12 Years With Alopecia Areata. Pediatr Dermatol. 2025 Jul-Aug;42(4):742-746. doi: 10.1111/pde.15895. Epub 2025 Feb 9.

Drugs

Indications