Efficacy and Tolerability Study of Two Dosing Regimens of CTP-543 in Adults With Alopecia Areata
Public ClinicalTrials.gov record NCT03941548. 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 Randomized Parallel-Group Study to Evaluate the Efficacy and Tolerability of Two Dosing Regimens of CTP-543 in Adult Patients With Moderate to Severe Alopecia Areata
Study identification
- NCT ID
- NCT03941548
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Concert Pharmaceuticals
- Industry
- Enrollment
- 66 participants
Conditions and interventions
Conditions
Interventions
- CTP-543 Drug
- CTP-543 Matching Placebo Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 65 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
- May 23, 2019
- Primary completion
- Apr 9, 2020
- Completion
- Apr 9, 2020
- Last update posted
- Apr 4, 2023
2019 – 2020
United States locations
- U.S. sites
- 5
- U.S. states
- 5
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Colorado Center for Dermatology and Skin Surgery | Centennial | Colorado | 80111 | — |
| ForCare Clinical Research | Tampa | Florida | 33613 | — |
| The Indiana Clinical Trials Center, PC | Plainfield | Indiana | 46168 | — |
| Massachusetts General Hospital | Boston | Massachusetts | 02114 | — |
| Austin Institute for Clinical Research, Inc. | Pflugerville | Texas | 78660 | — |
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 7 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03941548, 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 Apr 4, 2023 · Synced Jul 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03941548 live on ClinicalTrials.gov.