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Completed Phase 2 Interventional Results available

Safety and Efficacy of Oral Etrasimod in Adult Participants With Moderate-to-Severe Alopecia Areata

ClinicalTrials.gov ID: NCT04556734

Public ClinicalTrials.gov record NCT04556734. 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.

ClinicalTrials.gov public records Last synced Oct 19, 2026, 12:31 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Randomized, Double-Blind, Placebo-Controlled, 24-Week Study, With a 28-Week Open-Label Extension, to Assess the Safety and Efficacy of Etrasimod in Subjects With Moderate-to-Severe Alopecia Areata

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this study is to evaluate the safety and efficacy of etrasimod monotherapy (2 milligrams \[mg\] and 3 mg) in participants with moderate-to-severe alopecia areata (AA).

Study identification

NCT ID
NCT04556734
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Pfizer
Industry
Enrollment
80 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 70 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
Jul 29, 2020 (Actual)
Primary completion
Jun 7, 2023 (Actual)
Completion
Jun 7, 2023 (Actual)
Last update posted
Jun 26, 2024

2020 – 2023

United States locations

U.S. sites
39
U.S. states
18
U.S. cities
27
Facility City State ZIP Site status
Investigate MD Scottsdale Arizona 85255 —
Dermatology Trial Associates Bryant Arkansas 72022 —
California Dermatology & Clinical Research Institute Encinitas California 92024 —
First OC Dermatology Fountain Valley California 92708 —
University of California,Irvine Irvine California 92697 —
Prospect Optometry Lomita California 90717 —
Torrance Clinical Research Institute,Inc. Lomita California 90717 —
Yale Eye Center New Haven Connecticut 06511 —
Yale Investigational Drug Services New Haven Connecticut 06511 —
Yale Center for Clinical Investigation New Haven Connecticut 06519 —
Yale New Haven Hospital Department of Respiratory Care New Haven Connecticut 06519 —
Advanced Sleep & Respiratory Institute, PA Daytona Beach Florida 32117 —
International Eye Associates Ormond Beach Florida 32174 —
Leavitt Medical Associates of Florida d/ba Ameriderm Research Ormond Beach Florida 32174 —
Advanced Clinical Research Institute Tampa Florida 33607 —
Advanced Medical Research PC Sandy Springs Georgia 30328 —
Dawes Fretzin Clinical Research Group, LLC Indianapolis Indiana 46250 —
Eye Surgeons of Indiana Indianapolis Indiana 46260 —
Magnante Eye Care (Ophthalmological Assessments) Lafayette Indiana 47905 —
Physicians Research Group (Administrative Office Location) Noblesville Indiana 46060 —
Physicians Research Group West Lafayette Indiana 47906 —
Randall Dermatology, PC West Lafayette Indiana 47906 —
Lawrence J. Green, MD LLC Rockville Maryland 20850 —
Michigan Center for Skin Care Research Clinton Township Michigan 48038 —
MediSearch Clinical Trials Saint Joseph Missouri 64506 —
NYC Retina- Manhattan New York New York 10003 —
Bobby Buka MD, PC New York New York 10012 —
Rochester Ophthalmological Group Rochester New York 14623 —
Skin Search of Rochester, Inc. Rochester New York 14623 —
WDC Cosmetic and Research, PLLC Wilmington North Carolina 28405 —
NW Dermatology Institute Portland Oregon 97210 —
UPMC Department of Dermatology Pittsburgh Pennsylvania 15213 —
UPMC Eye Center Pittsburgh Pennsylvania 15213 —
International Clinical Research - Tennessee LLC Murfreesboro Tennessee 37130 —
Progressive Clinical Research, PA San Antonio Texas 78213 —
The Education & Research Foundation, Inc. Lynchburg Virginia 24501 —
Dermatology Specialists of Spokane Spokane Washington 99202 —
PRINCIPLE RESEARCH SOLUTIONS (pulmonary function testing) Spokane Washington 99204 —
SPOKANE EYE CLINIC (OCT and optical exam Spokane Washington 99204 —

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 3 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04556734, 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 Jun 26, 2024 · Synced Oct 19, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT04556734 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →