PLACEBO-CONTROLLED SAFETY STUDY OF RITLECITINIB (PF-06651600) IN ADULTS WITH ALOPECIA AREATA
Public ClinicalTrials.gov record NCT04517864. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A PHASE 2a, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY INVESTIGATING THE SAFETY OF RITLECITINIB (PF-06651600) IN ADULT PARTICIPANTS WITH ALOPECIA AREATA
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a global Phase 2a randomized, double-blind, placebo-controlled study to evaluate the safety and tolerability of ritlecitinib in adults aged 18 to ≤50 years of age with ≥25% scalp hair loss due to Alopecia Areata (AA).
Study identification
- NCT ID
- NCT04517864
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 71 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 50 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 15, 2020 (Actual)
- Primary completion
- Jan 4, 2022 (Actual)
- Completion
- May 7, 2024 (Actual)
- Last update posted
- Jul 11, 2025
2020 – 2024
United States locations
- U.S. sites
- 23
- U.S. states
- 9
- U.S. cities
- 20
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Marvel Clinical Research 002, LLC | Huntington Beach | California | 92647 | — |
| University of California, Irvine | Irvine | California | 92697 | — |
| Skin Care Research, LLC | Boca Raton | Florida | 33486 | — |
| Skin Care Research, LLC | Hollywood | Florida | 33021 | — |
| Kendall Adkisson, MD - Intracoastal Dermatology | Jacksonville | Florida | 32224 | — |
| Clinical Neuroscience Solutions, Inc. | Jacksonville | Florida | 32256 | — |
| Y&L Advance Health Care Inc., d/b/a Elite Clinical Research | Miami | Florida | 33144 | — |
| BRCR Medical Center Inc | Miramar | Florida | 33027 | — |
| Clinical Neuroscience Solutions, Inc. dba CNS Healthcare | Orlando | Florida | 32801 | — |
| Orlando Dermatology & Skin Cancer Surgery Center | Oviedo | Florida | 32765 | — |
| USF Health Morsani Center For Advanced Healthcare | Tampa | Florida | 33612 | — |
| NorthShore University HealthSystem Dermatology Clinical Trials Unit | Skokie | Illinois | 60077 | — |
| NorthShore University HealthSystem Dermatology Clinic | Skokie | Illinois | 60077 | — |
| Washington University School of Medicine-Dermatology | St Louis | Missouri | 63108 | — |
| University of New Mexico Department of Dermatology | Albuquerque | New Mexico | 87102 | — |
| University of New Mexico Clinical & Translational Sciences Center | Albuquerque | New Mexico | 87106 | — |
| Stony Brook Dermatology | Stony Brook | New York | 11790 | — |
| M3 Wake Research, Inc. | Raleigh | North Carolina | 27612 | — |
| Tekton Research, Inc. | Austin | Texas | 78745 | — |
| Center for Clinical Studies, LTD. LLP | Houston | Texas | 77004 | — |
| Summit Clinical Research, LLC | Franklin | Virginia | 23851 | — |
| The Education & Research Foundation, Inc. | Lynchburg | Virginia | 24501 | — |
| Virginia Dermatology and Skin Cancer Center | Norfolk | Virginia | 23502 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 15 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04517864, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 11, 2025 · Synced Oct 18, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT04517864 live on ClinicalTrials.gov.