Clinical trial Recruiting at 30 sites Phase 3 Interventional Ages 12 and up

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

PhasePhase 3
Study typeInterventional
Ages12 Years and up
SexAll
Enrollment336 (estimated)
SponsorPfizer
Industry-sponsored
Drugs / interventionsritlecitinib
Locations38 sites (Encinitas, California and 37 other locations)
StatusRecruiting
StartedJuly 30, 2026
Main results expectedApril 26, 2028
Study endsApril 26, 2028
Registry record updatedOctober 26, 2026
Trial IDNCT07733765 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

  • 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
  • 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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • 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.

    Recruiting at 41 sites Phase 3 Pfizer · Birmingham, Alabama and 147 other locations · NCT06873945

  • Which works better for patchy hair loss: steroid injections or microneedling with steroid cream?

    This trial tests whether injecting triamcinolone into the skin or using microneedling with topical triamcinolone helps people with alopecia areata regrow hair more effectively.

    Recruiting Phase 4 Dow University of Health Sciences · Karachi, Sindh · NCT07926711

  • Red Ultraviolet Hair Imaging and Hair Growth in Alopecia Areata

    This observational study checks if red fluorescence seen with UV hair imaging relates to disease features and how well hair regrows after standard intralesional corticosteroid treatment in adults with limited plaque-type alopecia areata.

    Recruiting Istanbul Training and Research Hospital · Istanbul · NCT07803874

  • 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.

    Recruiting Phase 1 Jiangsu vcare pharmaceutical technology co., LTD · Beijing, Beijing Municipality · NCT07762443

  • VC005 tablets in severe alopecia areata

    This study tests whether VC005 tablets work better than a placebo for adults with severe alopecia areata.

    Recruiting Phase 2 Jiangsu vcare pharmaceutical technology co., LTD · Beijing, Beijing Municipality · NCT07749716

  • 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.

    Recruiting Istanbul Training and Research Hospital · Istanbul, Cerrahpasa Mahallesi · NCT07733063

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.