Alopecia Areata
Alopecia areata is an autoimmune disorder that causes sudden hair loss in patches, affecting both men and women. It can occur on the scalp or other areas of the body and may lead to complete hair loss in some cases.
Alopecia Areata: Ritlecitinib Study
We are investigating whether two doses of ritlecitinib can help people aged 12 and older with alopecia areata regrow their scalp hair. The study compares the effects of the medication to a placebo.
What diseases are being studied?
Health conditions and diseases that the clinical trial is designed to study and treat.
Who can participate in the clinical trial?
These questions help us understand your situation so we can let the trial team know whether you might be a potential match. This is not a medical evaluation and is not part of the official screening, the study doctor will make the final decision..
- Are you 18 years old or older?
- Do you have a history of severe allergic reactions to medications like kinase inhibitors?
- Do you have any current infections that require treatment with antibiotics or antivirals?
- Have you had any major surgery or significant trauma in the past month?
- Do you have any serious mental health conditions, including recent thoughts of self-harm?
Where is the clinical trial being conducted?
Locations and medical facilities where this clinical trial is currently recruiting or conducting research. Select the locations where you would like to participate.
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Pratia Pardubice a.s.
Pardubice, Czechia
Fakultni Nemocnice Plzen
Dermatovenerologická klinika
Pilsen, Czechia
Kozni ambulance Fialova s.r.o.
Suchdol, Czechia
Sponsor: Pfizer Inc.
Last updated: Nov 26, 2025
Disclaimer: Parts of this content have been automatically extracted from the EU Clinical Trials registry. While we strive for accuracy, please always contact the trial site or sponsor directly for correct and official information before making any decisions about participation. View on EU Clinical Trials.