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Study identifier: NCT06130566 Synced from ClinicalTrials.gov · August 08, 2026
● Study status: CompletedCOAST 1

A Study to Evaluate the Efficacy and Safety of Subcutaneous Amlitelimab Monotherapy Compared With Placebo in Participants Aged 12 Years and Older With Moderate-to-severe Atopic Dermatitis

Condition: Dermatitis Atopic  ·  Sponsor: Sanofi

PhasePhase 3
Planned participants601
Who can joinAll sexes, 12 Years to no upper limit
Healthy volunteersNoCheck eligibility criteria ↓
Where148 locations · 15 countries

Sponsor, CRO or site team? See where this study is running → — listed sites, countries and recruiting context. Everything below is written for patients and caregivers.

About this study

This is a parallel group, Phase 3, multinational, multicenter, randomized, double blind, placebo-controlled, 3-arm monotherapy study for treatment of participants diagnosed with moderate to severe atopic dermatitis (AD), whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. The purpose of this study is to measure the efficacy and safety of treatment with amlitelimab solution for SC injection compared with placebo in participants with moderate to severe AD aged 12 years and older. Study details include: At the end of the treatment period, participants will have an option to enter a separate study: the blinded extension study EFC17600 (ESTUARY). For participants not entering the blinded extension Study EFC17600 (ESTUARY), the study duration will be up to 44 weeks including a 2 to 4-week screening, a 24-week randomized double-blind period, and a 16-week safety follow-up. For participants entering the blinded extension Study EFC17600 (ESTUARY), the study duration will be up to 28 weeks including a 2 to 4-week screening and a 24-week randomized double-blind period. The total treatment duration will be up to 24 weeks. The total number of visits will be up to 10 visits (or 9 visits for those entering the blinded extension study EFC17600\] (ESTUARY).

This description comes directly from the study's public registry record.

Talk to the study team

No contact information is available for this study as per the public registry record.

Always discuss trial participation with your own doctor first.

Full eligibility criteria (exactly as the study team wrote them)

Inclusion Criteria: * Participants must be 12 years of age (when signing informed consent form) * Diagnosis of AD for at least 1 year (defined by the American Academy of Dermatology Consensus Criteria) * Documented history (within 6 months before screening) of either inadequate response or inadvisability to topical treatments, and/or inadequate response to systemic therapies (within 12 months before screening) * v-IGA-AD of 3 or 4 at baseline visit * EASI score of 16 or higher at baseline * AD involvement of 10% or more of BSA at baseline * Weekly average of daily PP-NRS of ≥ 4 at baseline visit. * Able and willing to comply with requested study visits and procedures * Body weight ≥25 kg Exclusion Criteria: * Skin co-morbidity that would adversely affect the ability to undertake AD assessments * Known history of or suspected significant current immunosuppression * Any malignancies or history of malignancies prior to baseline (with the exception of non-melanoma skin cancer excised and cured \>5 years prior to baseline) * History of solid organ or stem cell transplant * Any active or chronic infection including helminthic infection requiring systemic treatment within 4 weeks prior to baseline (1 week in the event of superficial skin infections) * Positive for human immunodeficiency virus (HIV), Hepatitis B or hepatitis C at screening visit * Having active tuberculosis (TB), latent TB, a history of incompletely treated TB, suspected extrapulmonary TB infection, or who are at high risk of contracting TB * Having received any of the specified therapy within the specified timeframe(s) prior to the baseline visit * In the Investigator's opinion, any clinically significant laboratory results or protocol specified laboratory abnormalities at screening * History of hypersensitivity or allergy to any of the excipients or investigational medicinal product (IMP) The above information is not intended to contain all considerations relevant to a potential participation in a clinical trial

Reproduced word-for-word from the public registry record — the study team can answer questions about it.

Locations (148)

Scottsdale Clinical Trials- Site Number : 8401149Scottsdale, Arizona, United States
First OC Dermatology- Site Number : 8401025Fountain Valley, California, United States
Center for Dermatology Clinical Research- Site Number : 8401018Fremont, California, United States
Sunwise Clinical Research- Site Number : 8401022Lafayette, California, United States
Carbon Health - North Hollywood - NoHo West- Site Number : 8401218North Hollywood, California, United States
Northridge Clinical Trials - Northridge- Site Number : 8401080Northridge, California, United States
St Jude Clinical Research- Site Number : 8401287Doral, Florida, United States
Beth Israel Deaconess Medical Center - Fort Myers- Site Number : 8401286Fort Myers, Florida, United States
Direct Helpers Research Center- Site Number : 8401056Hialeah, Florida, United States
Encore Medical Research- Site Number : 8401030Hollywood, Florida, United States
Florida International Research Center- Site Number : 8401091Miami, Florida, United States
Miami Dermatology and Laser Research- Site Number : 8401086Miami, Florida, United States

+ 136 more locations — full list on the registry record.

More studies in these areas

This study lists sites in the areas below. Each link shows other recruiting studies near that city, from the public registry record.

ScottsdaleFountain ValleyFremontLafayette

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