Study of Edecesertib in Participants With Cutaneous Lupus Erythematosus (CLE) (COSMIC)

February 13, 2026 updated by: Gilead Sciences

A Randomized, Blinded, Placebo-Controlled, Phase 2a, Proof-of-Concept Study to Evaluate Efficacy, Safety, and Tolerability of GS-5718 in Participants With Cutaneous Lupus Erythematosus (CLE)

The goal of this clinical study is to test how edecesertib (formerly known as GS-5718) can be useful in treating Cutaneous Lupus Erythematosus (CLE) in participants with CLE. Information on what is happening in the body relating to CLE, how the body processes, is affected by and responds to the study drug, and any study drug side effects will also be collected in this study.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Germany
      • Dresden, Germany, 01307
        • Universitätsklinikum Carl Gustav Carus Klinik und Poliklinik für Dermatologie
      • Freiburg im Breisgau, Germany, 79104
        • Universitatsklinikum Freiburg Klinik fur Dermatologie und Venerologie
      • Leipzig, Germany, 04103
        • Universitätsklinikum Leipzig AöR Klinik und Poliklinik für Dermatologie, Venerologie und Allergologie Klinische Forschungseinheit (KFE) - Haus 10
  • Spain
      • Granollers, Spain, 08402
        • Hospital General de Granollers
      • Pamplona, Spain, 31008
        • Hospital Universitario de Navarra
  • United States
    • Arizona
      • Phoenix, Arizona, United States, 85015
        • ARENSIA Exploratory Medicine, LLC
    • California
      • Fremont, California, United States, 94538
        • Center for Dermatology Clinical Research Inc.
    • Colorado
      • Aurora, Colorado, United States, 80045
        • University of Colorado, Barbara Davis Center, Center for Clinical Research
    • Connecticut
      • New Haven, Connecticut, United States, 06510
        • Yale Center for Clinical Investigation (YCCI)
    • Florida
      • Clearwater, Florida, United States, 33765
        • Clinical Research of West Florida, Inc.
      • Miami, Florida, United States, 33165
        • Reliant Medical Research
      • Orlando, Florida, United States, 32819
        • HMD Research LLC
    • Georgia
      • Atlanta, Georgia, United States, 30303
        • Emory University School of Medicine
    • Indiana
      • Indianapolis, Indiana, United States, 46250
        • Dawes Fretzin Clinical Research Group, LLC
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • Dept. of Dermatology, Hospital of the University of Pennsylvania, Perelman Center for Advanced Medicine (PCAM)
    • Texas
      • Houston, Texas, United States, 77037
        • Gulf Bank Medical Center
      • Plano, Texas, United States, 75075
        • Clinical Investigations of Texas

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  • Either fulfill European League Against Rheumatism/American College of Rheumatology (EULAR/ACR) 2019 classification criteria for systemic lupus erythematosus (SLE) and/or have biopsy confirmed Cutaneous Lupus Erythematosus (CLE) at any time.
  • Must have active CLE at screening and Day 1. Individuals with acute CLE (ACLE) must have involvement of 2 distinct body areas.
  • Cutaneous Lupus Erythematosus Disease Area and Severity Index activity - A (CLASI-A) score (excluding alopecia) of ≥ 8 and CLASI-A erythema score of ≥ 4 during screening and on Day 1. Individuals with SLE must have Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) score of ≥ 4 at screening.
  • Presence of at least 1 representative lupus skin lesion amenable to punch biopsy and individual willingness to undergo skin punch biopsy at 2 time points.

  • Must have documented prior intolerance or inadequate response at any time (per investigator judgement) to protocol-specified treatments.

    • Topical corticosteroids or topical calcineurin inhibitors.
    • Oral corticosteroids.
    • Any other nonbiologic standard-of-care therapy, including, but not limited to: chloroquine, quinacrine, hydroxychloroquine, azathioprine, mycophenolate mofetil (MMF), leflunomide, dapsone, or methotrexate (MTX).
  • Individuals willing to comply with all study visits and assessments.

Key Exclusion Criteria:

  • Individuals with only chilblains lupus, lupus panniculitis, lupus tumidus and/or localized acute CLE involving only 1 distinct body area at screening and Day 1.
  • Have highly active SLE (including but not limited to lupus nephritis, neuropsychiatric SLE, and/or vasculitis).
  • Presence of active skin conditions other than cutaneous lupus that may interfere with assessing lupus-specific skin lesion(s) (eg, psoriasis, and/or drug-induced lupus).

  • Meet protocol-specified infection or lab criteria.

    • Any active infection that is clinically significant (per investigator judgment).
  • Any history of clinically significant liver disease.
  • Significant cardiovascular disease.

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Edecesertib
Participants will receive edecesertib 30 mg, once daily starting on Day 1 for up to 12 weeks.
Drug: Edecesertib
Tablets administered orally
Other Names:
  • GS-5718
Placebo Comparator: Edecesertib Placebo
Participants will receive edecesertib placebo, once daily starting on Day 1 for up to 12 weeks.
Drug: Edecesertib Placebo
Tablets administered orally

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Percent Change From Baseline in Cutaneous Lupus Erythematosus Disease Area and Severity Index Activity (CLASI-A) Score at Week 12
Time Frame: Baseline, Week 12
The CLASI is a standardized, validated measure of cutaneous lupus disease activity and damage, widely used in clinical trials. CLASI consists of CLASI - activity (A) and - damage (D) measurements. CLASI-A scores range from 0 to 70, with higher scores indicating more severe disease activity.
Baseline, Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Proportion of Participants With Cutaneous Lupus Activity Investigator Global Assessment (CLA-IGA) Score of 0 or 1 at Week 12
Time Frame: Week 12
The CLA-IGA is a measure of cutaneous lupus erythematosus (CLE) activity and will be recorded on a scale of 0 to 4, with 0 indicating "clear" and 4 indicating "severe".
Week 12
Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)
Time Frame: First dose date up to 12 weeks plus 30 days
First dose date up to 12 weeks plus 30 days
Percentage of Participants Experiencing Serious Treatment-emergent Adverse Events (TESAEs)
Time Frame: First dose date up to 12 weeks plus 30 days
First dose date up to 12 weeks plus 30 days
Percentage of Participants Experiencing Laboratory Abnormalities
Time Frame: First dose date up to 12 weeks plus 30 days
First dose date up to 12 weeks plus 30 days
Plasma Concentration of Edecesertib
Time Frame: Postdose at Week 2, Predose at Week 4 and 12, and Week 8 (anytime of the day)
Postdose at Week 2, Predose at Week 4 and 12, and Week 8 (anytime of the day)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Gilead Sciences

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Gilead Study Director, Gilead Sciences

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 17, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 17, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 14, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 17, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 17, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 29, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 17, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 13, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GS-US-497-6486
  • 2022-501523-24 (Other Identifier: European Medicines Agency)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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