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Hair loss drug shows promise in Long-Term trial for alopecia areata

NCT ID NCT03898479

Disease control Sponsor: Sun Pharmaceutical Industries, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at the long-term safety and effectiveness of a drug called CTP-543 for adults with moderate to severe alopecia areata, a condition that causes patchy hair loss. About 1,000 people who already completed 24 weeks of treatment in a previous CTP-543 trial will continue taking the drug to see if it helps regrow hair and remains safe over time. The main goal is to monitor side effects and measure hair regrowth using a standard scalp scoring tool.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2019

Expected to finish

Jun 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Have completed 24 weeks of treatment in a previous qualifying CTP-543 clinical trial Exclusion Criteria: * Active scalp inflammation, psoriasis, or seborrheic dermatitis requiring topical treatment to the scalp, significant trauma to the scalp, or untreated actinic keratosis * Females who are nursing, pregnant, or planning to become pregnant while in the study, and for 30 days after last dose of study medication * Donation of blood at any point throughout the study and for 30 days after last dose of study medication

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Conditions

The condition(s) this trial relates to.

alopecia areata

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Alopecia areata

Contacts and locations

Locations

  • ASR, LLC

    Boise, Idaho, 83702, United States

  • Alliance Clinical Trials

    Waterloo, Ontario, N2J 1C4, Canada

  • Alliance Dermatology & MOHS Center

    Phoenix, Arizona, 85032, United States

  • Austin Institute for Clinical Research, Inc.

    Pflugerville, Texas, 78660, United States

  • Bexley Dermatology Research

    Bexley, Ohio, 43209, United States

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115, United States

  • California Dermatology & Clinical Research Institute

    Encinitas, California, 92024, United States

  • Care Clinic

    Red Deer, Alberta, T4P 1K4, Canada

  • Center for Dermatology and Plastic Surgery/CCT Research

    Scottsdale, Arizona, 85260, United States

  • Centre de Recherche Dermatologique du Quebec metropolitain (CRDQ)

    Québec, G1V 4X7, Canada

  • Centre for Dermatology

    Richmond Hill, Ontario, L4B 1A5, Canada

  • Clarkston Skin Research

    Clarkston, Michigan, 48346, United States

  • Clinical Investigation Specialists, Inc.

    Kenosha, Wisconsin, 53144, United States

  • Clinical Research Center of the Carolinas

    Charleston, South Carolina, 29407, United States

  • Clinical Research Institute of Michigan

    Clinton Township, Michigan, 48038, United States

  • Clinical Research Trials of Florida, Inc.

    Tampa, Florida, 33607, United States

  • Colorado Center for Dermatology, PLLC d/b/a CODerm Research

    Centennial, Colorado, 80111, United States

  • Colorado Medical Research Center

    Denver, Colorado, 80210, United States

  • DS Research

    New Albany, Indiana, 47150, United States

  • DS Research

    Louisville, Kentucky, 40241, United States

  • Darst Dermatology

    Charlotte, North Carolina, 28277, United States

  • Dawes Fretzin Clinical Research Group, LLC

    Indianapolis, Indiana, 46250, United States

  • Denova Research

    Chicago, Illinois, 60611, United States

  • DermEffects

    London, Ontario, N6H 5L5, Canada

  • Dermatology Associates of Plymouth Meeting

    Plymouth Meeting, Pennsylvania, 19462, United States

  • Dermatology Clinical Research Center of San Antonio

    San Antonio, Texas, 78229, United States

  • Dermatology Research Associates

    Los Angeles, California, 90045, United States

  • Dermatology Research Institute

    Calgary, Alberta, T1Y 0B4, Canada

  • Dermatology Specialists of Charlotte

    Charlotte, North Carolina, 28211, United States

  • Dermatology Treatment and Research Center - Dallas

    Dallas, Texas, 75230, United States

  • Dr. S. K. Siddha Medicine Professional Corporation

    Newmarket, Ontario, L3Y 5G8, Canada

  • Enverus Medical Research

    Surrey, British Columbia, V3V 0C6, Canada

  • Floridian Research Institute, LLC

    Miami, Florida, 33179, United States

  • ForCare Clinical Research

    Tampa, Florida, 33613, United States

  • Guelph Dermatology Research

    Guelph, Ontario, N1L 0B7, Canada

  • Hope Clinical Research

    Canoga Park, California, 91303, United States

  • Hospital of the University of Pennsylvania Dept of Dermatology

    Philadelphia, Pennsylvania, 19104, United States

  • Icahn School of Medicine at Mount Sinai

    New York, New York, 10029, United States

  • Innovaderm Research Inc.

    Montreal, Quebec, H2X 2V1, Canada

  • JRB research Inc.

    Ottawa, Ontario, K1K 4L2, Canada

  • Johnson Dermatology

    Fort Smith, Arkansas, 72916, United States

  • Jordan Valley Dermatology

    West Jordan, Utah, 84088, United States

  • Kaiser Permanente Clinical Trials Unit

    San Francisco, California, 94118, United States

  • Kaiser Permanente Northern California - Oakland

    Oakland, California, 94611, United States

  • Kaiser Permanente South Sacramento

    Sacramento, California, 95823, United States

  • Kern Research Inc.

    Bakersfield, California, 93301, United States

  • Kingsway Clinical Research

    Etobicoke, Ontario, M8X 1Y9, Canada

  • Kirk Barber Research

    Calgary, Alberta, T2G 1B1, Canada

  • Lenus Research & Medical Group, LLC

    Sweetwater, Florida, 33172, United States

  • Lynderm Research Inc.

    Markham, Ontario, L3P 1X3, Canada

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114, United States

  • Medical Arts Health Research Group

    Kelowna, British Columbia, V1Y 4N7, Canada

  • Minnesota Clinical Study Center

    Fridley, Minnesota, 55432, United States

  • NW Dermatology Institute

    Portland, Oregon, 97210, United States

  • North Carolina Dermatology Associates, PLLC

    Raleigh, North Carolina, 27617, United States

  • North Texas Center for Clinical Research

    Frisco, Texas, 75034, United States

  • Northwest Arkansas Clinical Trials Center, PLLC

    Rogers, Arkansas, 72758, United States

  • Oregon Medical Research Center

    Portland, Oregon, 97201, United States

  • Palmetto Clinical Trial Services

    Fountain Inn, South Carolina, 29644, United States

  • Palmtree Clinical Research, Inc.

    Palm Springs, California, 92262, United States

  • Peak Research - Pennsylvania

    Upper Saint Clair, Pennsylvania, 15241, United States

  • Progressive Clinical Research

    San Antonio, Texas, 78213, United States

  • Qualmedica Research

    Owensboro, Kentucky, 42301, United States

  • Quest Dermatology Research

    Northridge, California, 91324, United States

  • Remington-Davis, Inc.

    Columbus, Ohio, 43215, United States

  • Research Toronto

    Toronto, Ontario, M4W 2N4, Canada

  • Rhode Island Hospital

    Providence, Rhode Island, 02903, United States

  • Sadick Research Group

    New York, New York, 10075, United States

  • Schweiger Dermatology, P.C.

    Verona, New Jersey, 07044, United States

  • SimcoDerm Medical and Surgical Dermatology Center

    Barrie, Ontario, L4M 7G1, Canada

  • Skin Care Research, LLC

    Boca Raton, Florida, 33486, United States

  • Skin Care Research, LLC

    Hollywood, Florida, 33021, United States

  • Skin Laser and Surgery Specialists of NJ

    Hackensack, New Jersey, 07601, United States

  • Stanford University School of Medicine - Medical Dermatology Clinic

    Redwood City, California, 94063, United States

  • Suzanne Bruce and Associates, PA

    Houston, Texas, 77056, United States

  • Texas Dermatology and Laser Specialists

    San Antonio, Texas, 78218, United States

  • The Centre for Clinical Trials

    Oakville, Ontario, L6J 7W5, Canada

  • The Indiana Clinical Trials Center, PC

    Plainfield, Indiana, 46168, United States

  • Total Skin and Beauty Dermatology Center

    Birmingham, Alabama, 35203, United States

  • UR Dermatology at College Town

    Rochester, New York, 14620, United States

  • University of California, Irvine

    Irvine, California, 92697, United States

  • University of Miami Hospital

    Miami, Florida, 33125, United States

  • University of Minnesota Department of Dermatology

    Minneapolis, Minnesota, 55417, United States

  • University of Virginia Health System

    Charlottesville, Virginia, 22903, United States

  • Velocity Clinical Research-Providence

    East Greenwich, Rhode Island, 02818, United States

  • Vital Prospects Clinical Research Institute, P.C.

    Tulsa, Oklahoma, 74136, United States

  • Vivida Dermatology

    Las Vegas, Nevada, 89119, United States

  • Wake Forest University Health Sciences, Department of Dermatology

    Winston-Salem, North Carolina, 27104, United States

  • West End Dermatology Associates

    Richmond, Virginia, 23233, United States

  • Wiseman Dermatology Research Inc.

    Winnipeg, Manitoba, R3M 3Z4, Canada

  • Yale University Church Street Research Unit

    New Haven, Connecticut, 06519, United States

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