Efficacy and Tolerability Study of Two Dose Regimens of CTP-543 in Adults With Alopecia Areata
Public ClinicalTrials.gov record NCT03811912. 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
- NCT03811912
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Concert Pharmaceuticals
- Industry
- Enrollment
- 57 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
- Mar 20, 2019
- Primary completion
- Nov 20, 2019
- Completion
- Nov 20, 2019
- Last update posted
- Dec 8, 2022
2019
United States locations
- U.S. sites
- 10
- U.S. states
- 8
- U.S. cities
- 9
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Investigative Site | Irvine | California | 92697 | — |
| Investigative Site | San Francisco | California | 94118 | — |
| Investigative Site | New Haven | Connecticut | 06519 | — |
| Investigative Site | Boynton Beach | Florida | 33472 | — |
| Investigative Site | Boston | Massachusetts | 02114 | — |
| Investigative Site | Boston | Massachusetts | 02115 | — |
| Investigative Site | Fridley | Minnesota | 55432 | — |
| Investigative Site | Portsmouth | New Hampshire | 03801 | — |
| Investigative Site | Winston-Salem | North Carolina | 27104 | — |
| Investigative Site | Portland | Oregon | 97210 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03811912, 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 Dec 8, 2022 · Synced Jul 23, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03811912 live on ClinicalTrials.gov.