Study to Evaluate the Safety and Efficacy of CTP-543 in Adults With Moderate to Severe Alopecia Areata

Trial ID or NCT#



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This study will evaluate the safety and efficacy of CTP-543 on hair loss in adults with chronic, moderate to severe alopecia areata.

Official Title

A Double-Blind, Randomized, Placebo-Controlled Study to Evaluate the Safety and Efficacy of CTP-543 in Adult Patients With Moderate to Severe Alopecia Areata

Eligibility Criteria

Ages Eligible for Study: 18 Years to 65 Years
Sexes Eligible for Study: All
Accepts Healthy Volunteers: No
Inclusion Criteria:
  1. - 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:
  1. - 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


Justin M Ko, MD, MBA
Justin M Ko, MD, MBA
Dermatologist, Melanoma specialist, Cutaneous oncology specialist, Hair loss specialist, Psoriasis specialist
Clinical Professor, Dermatology

Contact us to find out if this trial is right for you.


Michelle Kim