Skip to main content
OpenTrials
Completed

NCT Number: NCT03811912

Efficacy and Tolerability Study of Two Dose Regimens of CTP-543 in Adults With Alopecia Areata

This study will evaluate the efficacy and tolerability of once-daily versus twice-daily dosing of CTP-543, in adult patients with chronic, moderate to severe alopecia areata.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Alopecia Areata Alopecia Hair Diseases Hypotrichosis Skin Diseases Skin and Connective Tissue Diseases

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Investigative Site, Irvine, California, United States

Loading trial locations.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Definitive diagnosis of alopecia areata with a current episode lasting at least 6 months and not exceeding 10 years at the time of Screening. Total disease duration greater than 10 years is permitted.
  • At least 50% scalp hair loss, as defined by a Severity of Alopecia Tool (SALT) score ≥50, at Screening and Baseline.
  • Clinical lab results within the normal range

Exclusion criteria

  • Active scalp inflammation, psoriasis, or seborrheic dermatitis requiring topical treatment to the scalp, significant trauma to the scalp, or untreated actinic keratosis on the scalp.
  • Treatment with systemic immunosuppressive medications or biologics.
  • Vaccination with herpes zoster vaccine or any live virus within 6 weeks of screening or during the study

Treatment and study plan

CTP-543

Drug

CTP-543 administered as 8 mg tablet.

CTP-543 matching placebo

Drug

Administered as tablets to aid treatment masking.

Primary outcomes

  1. Relative Change From Baseline in Severity of Alopecia Tool (SALT) Score at Week 24

    Time frame: Baseline, Week 24

    The SALT is a quantitative assessment of scalp hair loss. SALT scores range in severity from 0 (no hair loss) to a maximum of 100 (complete hair loss). Relative change (percent change) to baseline is calculated as: 100 x ([baseline SALT score - follow-up SALT score]/baseline SALT score).

Secondary outcomes

  1. Percentage of Participants Achieving at Least a 90%, 75%, and 50% Relative Reduction in SALT Score From Baseline

    Time frame: Baseline, Weeks 4, 8, 12, 16, 20, and 24

    The SALT is a quantitative assessment of scalp hair loss. SALT scores range in severity from 0 (no hair loss) to a maximum of 100 (complete hair loss). Percentage of participants achieving at least a 50%, 75%, 90% relative reduction in SALT score from baseline at Weeks 4, 8, 12, 16, 20, and 24 are reported.

  2. Absolute Change in SALT Scores From Baseline at Weeks 4, 8, 12, 16, 20, and 24

    Time frame: Baseline, Weeks 4, 8, 12, 16, 20, and 24

    The SALT is a quantitative assessment of scalp hair loss. SALT scores range in severity from 0 (no hair loss) to a maximum of 100 (complete hair loss). Absolute change equals the difference in SALT measurements (baseline SALT score - follow-up SALT score).

  3. Relative Change in SALT Scores From Baseline at Weeks 4, 8, 12, 16 and 20

    Time frame: Baseline, Weeks 4, 8, 12, 16 and 20

    The SALT is a quantitative assessment of scalp hair loss. SALT scores range in severity from 0 (no hair loss) to a maximum of 100 (complete hair loss). Relative change (percent change) to baseline is calculated as: 100 x ([baseline SALT score - follow-up SALT score]/baseline SALT score).

  4. Percentage of Participants With Change in Satisfaction of Hair Coverage

    Time frame: Baseline, Week 24

    Participant satisfaction question was used to assess overall satisfaction with hair coverage, with responses ranging from 1 to 5, as follows: 1 (very dissatisfied), 2 (dissatisfied), 3 (somewhat satisfied), 4 (mostly satisfied), 5 (very satisfied). Higher scores indicate better satisfaction with hair coverage. The percentage of participants with change from Baseline to the Week 24 satisfaction level was reported as categories: satisfied to satisfied; satisfied to dissatisfied; dissatisfied to satisfied and dissatisfied to dissatisfied. Data is reported only for participants with change from Baseline in satisfaction level.

Other outcomes

  1. Number of Participants With Adverse Events as a Measure of Safety

    Time frame: 24 Weeks

Sponsors and collaborators

Lead sponsor

Concert Pharmaceuticals

Industry

Registry information

Official study 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

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Jan 22, 2019
Registry last updated
Dec 9, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.