Ritlecitinib for patchy hair loss in teens and adults with alopecia areata
Official title: A PHASE 3, RANDOMIZED, DOUBLE BLIND, PLACEBO-CONTROLLED STUDY TO INVESTIGATE THE SAFETY AND EFFICACY OF RITLECITINIB IN ADULT AND ADOLESCENT PARTICIPANTS 12 YEARS OF AGE AND OLDER WITH MODERATE ALOPECIA AREATA
Run by Pfizer · NCT07733765 · Data updated 2026-11-12
This study tests whether ritlecitinib can help people 12 and older with patchy alopecia areata who have had symptoms for 6 months to 10 years.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 12 Years and up |
| Sex | All |
| Enrollment | 336 (estimated) |
| Sponsor | Pfizer Industry-sponsored |
| Drugs / interventions | ritlecitinib |
| Locations | 38 sites (Encinitas, California and 37 other locations) |
| Status | Recruiting |
| Started | July 30, 2026 |
| Main results expected | April 26, 2028 |
| Study ends | April 26, 2028 |
| Registry record updated | October 26, 2026 |
| Trial ID | NCT07733765 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are 12 years or older with patchy alopecia areata affecting 20–50% of the scalp, a current episode lasting 6 months to 10 years, and no other hair-loss conditions.
✕Probably not a fit
Patients with hair loss due to other causes or those outside the SALT range or duration criteria may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a phase 3 interventional trial evaluating ritlecitinib at 50 mg and 100 mg versus placebo for moderate alopecia areata. Participants will take the study drug or placebo daily at home for 24 weeks, with potential dose changes after 24 weeks. The trial aims to determine safety and the effect on scalp hair loss over six months, with eligibility based on SALT score and duration of the current episode. Lead sponsor is Pfizer, with sites in California, Florida, and Illinois.
Why it matters
Potential benefit: If successful, participants could see an improvement in scalp hair coverage and overall symptoms of alopecia areata.
How similar studies have gone: Earlier studies in related therapies have shown potential benefits for alopecia areata, but results for ritlecitinib specifically are being tested in this phase 3 trial.
Who can join: the full rules
Show full inclusion / exclusion criteria
Key Inclusion Criteria * 18 years or older (or the minimum age of consent in accordance with local regulations) at screening. Adolescents (12 to \<18 years of age at screening) are also eligible for this study, but only if permitted by the local IRB/EC and local regulatory health authority (if applicable). Where these approvals have not been granted, only participants 18 years of age and older at screening will be enrolled * Have a clinical diagnosis of AA with no other etiology of hair loss. * Have \>20% to \<50% hair loss of the scalp, as measured by SALT. * Current AA episode of hair loss ≥6 months and ≤10 years (Current episode is defined as the continuous period of AA-related scalp hair loss since the last time the subject had no visible scalp patches). Key Exclusion Criteria 1\. Diseases or conditions affecting hair loss, including: * Other types of alopecia (including, but not limited to, traction and scarring alopecia, telogen effluvium). Participants with androgenetic alopecia will be excluded. * Other scalp disease that may impact AA assessment (eg, scalp psoriasis, dermatitis, etc.). * Active systemic diseases that may cause hair loss (eg, lupus erythematosus, thyroiditis, systemic sclerosis, lichen planus, etc).
Where it's running
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California Dermatology & Clinical Research Institute
Encinitas, California, United States Recruiting -
Skin Research of South Florida
Miami, Florida, United States Recruiting -
Dawes Fretzin Clinical Research Group, LLC
Indianapolis, Indiana, United States Recruiting -
Massachusetts General Hospital - Clinical Unit for Research Trials in Skin (CURTIS)
Boston, Massachusetts, United States Recruiting -
Revival Research Institute, LLC
Troy, Michigan, United States Recruiting -
Clinical and Translational Research Center (CTRC)
Chapel Hill, North Carolina, United States Recruiting
Show 32 more locations
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UNC Dermatology and Skin Cancer Center
Chapel Hill, North Carolina, United States Recruiting -
Audiology & Hearing Services
Charlotte, North Carolina, United States Recruiting -
Carolinas Imaging Service
Charlotte, North Carolina, United States Recruiting -
Darst Dermatology
Charlotte, North Carolina, United States Recruiting -
Bexley Dermatology Research
Bexley, Ohio, United States Recruiting -
NW Dermatology Institute
Portland, Oregon, United States Recruiting -
Dermatology Associates of Plymouth Meeting
Plymouth Meeting, Pennsylvania, United States Recruiting -
Center for Clinical Studies, LTD. LLP
Houston, Texas, United States Recruiting -
Texas Dermatology and Laser Specialists
San Antonio, Texas, United States Recruiting -
Wiseman Dermatology Research Inc.
Winnipeg, Manitoba, Canada Recruiting -
The Centre for Clinical Trials
Oakville, Ontario, Canada Recruiting -
Research Toronto
Toronto, Ontario, Canada Recruiting -
Centre de Recherche Saint-Louis (Montréal)
Montreal, Quebec, Canada Recruiting -
Centre de Recherche Saint-Louis (Québec)
Québec, Quebec, Canada Recruiting -
Huashan Hospital, Fudan University
Shanghai, Shanghai Municipality, China Recruiting -
Hospital of the University of Occupational and Environmental Health, Japan
Kitakyushu-shi, Fukuoka, Japan Recruiting -
Hamamatsu University Hospital
Hamamatsu, Shizuoka, Japan Recruiting -
Juntendo Tokyo Koto Geriatric Medical Center
Koto-ku, Tokyo, Japan Recruiting -
Kyorin University Hospital
Mitaka, Tokyo, Japan Recruiting -
Tokyo Medical University Hospital
Shinjuku-ku, Tokyo, Japan Recruiting -
Niigata University Medical & Dental Hospital
Niigata, Japan Recruiting -
Osaka Metropolitan University Hospital
Osaka, Japan Recruiting -
Kyung Hee University Hospital at Gangdong
Seoul, Seoul-teukbyeolsi [seoul], South Korea Recruiting -
Seoul National University Hospital
Seoul, South Korea Recruiting -
Endeavor Health
Skokie, Illinois, United States Not yet recruiting -
University of Iowa
Iowa City, Iowa, United States Not yet recruiting -
Cutaneous Translational Research Program, Johns Hopkins University School of Medicine
Baltimore, Maryland, United States Not yet recruiting -
Johns Hopkins Hospital Investigational Drug Services (IDS) Pharmacy
Baltimore, Maryland, United States Not yet recruiting -
Dermatology Specialists of Spokane
Spokane, Washington, United States Not yet recruiting -
Principle Research Solutions
Spokane, Washington, United States Not yet recruiting -
Beijing Friendship Hospital
Beijing, Beijing Municipality, China Not yet recruiting -
Jeonbuk National University Hospital
Jeonju, Jeonrabugdo,, South Korea Not yet recruiting
Study contacts
- Study coordinator: Pfizer CT.gov Call Center
- Email: ClinicalTrials.gov_Inquiries@pfizer.com
- Phone: 1-800-718-1021
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Testing two doses of ritlecitinib for treating alopecia areata in people aged 12 and older
This study is testing two different doses of a new oral medication called ritlecitinib to see if it can help people aged 12 and older with significant hair loss from alopecia areata.
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This trial tests whether injecting triamcinolone into the skin or using microneedling with topical triamcinolone helps people with alopecia areata regrow hair more effectively.
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Red Ultraviolet Hair Imaging and Hair Growth in Alopecia Areata
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VC005 tablets in teens with severe alopecia areata
This Phase 1 study tests VC005 tablets in adolescents with severe alopecia areata to see how the drug behaves in the body, whether it is safe, and if there are signs of benefit.
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VC005 tablets in severe alopecia areata
This study tests whether VC005 tablets work better than a placebo for adults with severe alopecia areata.
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Alopecia Areata: looking at ferroptosis markers in blood
This study tests whether levels of GPX4 and MDA in blood differ between people with alopecia areata and healthy controls.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.