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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

NCT06407934

Active Not RecruitingPhase 3

Sponsor: Sanofi

Conditions: Dermatitis Atopic

Interventions: Amlitelimab, Placebo

Countries: United States, Argentina, Australia, Brazil, Bulgaria, Canada, Chile, China

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).

Eligibility overview

Sex: ALL

Age: 12 Years to —

Healthy volunteers: No

Study type: INTERVENTIONAL

Eligibility criteria

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.

Locations (324)

Birmingham, Alabama, United States
Scottsdale, Arizona, United States
Scottsdale, Arizona, United States
Tucson, Arizona, United States
Fort Smith, Arkansas, United States
Encino, California, United States
Fountain Valley, California, United States
Fremont, California, United States
Huntington Beach, California, United States
Lafayette, California, United States
Lomita, California, United States
Los Angeles, California, United States
Los Angeles, California, United States
Northridge, California, United States
Oxnard, California, United States
Santa Ana, California, United States
Santa Monica, California, United States
Farmington, Connecticut, United States
Coral Gables, Florida, United States
Doral, Florida, United States
Fort Myers, Florida, United States
Hialeah, Florida, United States
Hollywood, Florida, United States
Miami, Florida, United States
Miami, Florida, United States
Miami, Florida, United States
Miami, Florida, United States
Miami, Florida, United States
Miami Lakes, Florida, United States
Pompano Beach, Florida, United States
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