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Study identifier: NCT06407934 Synced from ClinicalTrials.gov · August 07, 2026
● Study status: Active Not RecruitingESTUARY

A Study to Evaluate the Treatment Response and Safety of Two Dose Regimens of Subcutaneous Amlitelimab Compared With Treatment Withdrawal in Participants Aged 12 Years and Older With Moderate-to-severe Atopic Dermatitis

Condition: Dermatitis Atopic  ·  Sponsor: Sanofi

PhasePhase 3
Planned participants1541
Who can joinAll sexes, 12 Years to no upper limit
Healthy volunteersNoCheck eligibility criteria ↓
Where324 locations · 27 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 multinational, multicenter, randomized, double-blind, placebo-controlled, parallel, Phase 3 study for treatment of participants aged 12 years and older diagnosed with moderate-to-severe atopic dermatitis (AD). The primary objective of ESTUARY is to assess the maintenance of treatment response on continued Q12W dosing compared to treatment withdrawal. Study details include: The study duration will be up to 68 weeks including a 52-week randomized double-blind period, and a 16-week safety follow-up for participants not entering the LTS17367 (RIVER-AD). The study duration will be up to 52 weeks for participants entering the LTS17367 \[RIVER-AD\] study at the Week 52 visit of 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.

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

Inclusion Criteria: * Participants must be at least 12 years of age inclusive, at the time the informed consent is signed. * Must have participated, received study treatment without permanent investigational medicinal product (IMP) discontinuation, and adequately completed the assessments required for the treatment period in one of the three 24-week parent studies EFC17559 (COAST-1), EFC17560 (COAST-2) or EFC17561 (SHORE) for moderate-to-severe AD. * Able and willing to comply with requested study visit and procedures. * Body weight must be ≥ 25 kg. Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: * Developed a medical condition that would preclude participation as described in Exclusion Criteria or Permanent Discontinuation of EFC17559 (COAST-1)/EFC17560 (COAST-2)/EFC17561 (SHORE) clinical trial protocols. * Having received any prohibited medication or procedure for AD that resulted in IMP discontinuation in the parent study EFC17559 (COAST-1), EFC17560 (COAST-2) or EFC17561 (SHORE). * Participants who, during their participation in the parent study EFC17559 (COAST-1) /EFC17560 (COAST-2)/EFC17561 (SHORE), developed an adverse event (AE) or a serious adverse event (SAE) deemed related to amlitelimab, which in the opinion of the Investigator could indicate that continued treatment with amlitelimab may present an unreasonable risk for the participant. * Participants who have had IMP permanently discontinued for any reason before or at the time of the planned first dose in the EFC17600 (ESTUARY) study. * Conditions in the parent study EFC17559 (COAST-1)/EFC17560 (COAST-2)/EFC17561 (SHORE) that led to Investigator - or Sponsor-initiated withdrawal of participant from the study (eg, non-compliance, inability to complete study assessments, etc.). * Participant not suitable for participation, whatever the reason, as judged by the Investigator, including medical or clinical conditions, or participants potentially at risk of noncompliance to study procedures. The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.

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

Locations (324)

Cahaba Dermatology & Skin Health Center- Site Number : 8401066Birmingham, Alabama, United States
Center for Dermatology and Plastic Surgery- Site Number : 8401119Scottsdale, Arizona, United States
Scottsdale Clinical Trials- Site Number : 8401149Scottsdale, Arizona, United States
Eclipse Clinical Research- Site Number : 8401158Tucson, Arizona, United States
Johnson Dermatology- Site Number : 8401076Fort Smith, Arkansas, United States
Encino Research Center- Site Number : 8401042Encino, California, United States
First OC Dermatology- Site Number : 8401025Fountain Valley, California, United States
Center for Dermatology Clinical Research- Site Number : 8401018Fremont, California, United States
Marvel Clinical Research- Site Number : 8401102Huntington Beach, California, United States
Sunwise Clinical Research- Site Number : 8401022Lafayette, California, United States
Torrance Clinical Research - Narbonne Avenue- Site Number : 8401027Lomita, California, United States
Dermatology Research Associates - Los Angeles- Site Number : 8401092Los Angeles, California, United States

+ 312 more locations — full list on the registry record.

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