← Back to Search

Monoclonal Antibodies

Amlitelimab for Atopic Dermatitis (COAST 1) (COAST 1 Trial)

Phase 3
Recruiting
Research Sponsored by Sanofi
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Have you had atopic dermatitis for at least 1 year?
In the past six months, have you had a poor response to any of the treatments you took for your atopic dermatitis?
Must not have
Have you been diagnosed with any of the following: psoriasis, tinea corporis, or lupus erythematosus?
In the past year, have you taken any of the following medications: Abrocitinib (brand name Cibinqo), Upadacitinib (brand name Rinvoq), or Baricitinib (brand name Olumiant)?
Timeline
Screening 2 weeks
Treatment 24 weeks
Follow Up 16 weeks
Awards & highlights
Pivotal Trial

Summary

This trial tests an injectable treatment called amlitelimab for people aged 12 and older with moderate to severe eczema that doesn't respond well to creams or ointments. The treatment aims to reduce skin inflammation and itching by blocking specific proteins in the immune system. The study will evaluate how effective and safe amlitelimab is.

Who is the study for?
You are eligible if you have been diagnosed with moderate-to-severe AD for a year or longer and used topical corticosteroids or topical calcineurin inhibitors without adequate benefit from topical medications within the last 6 months or used systemic therapies for AD without adequate benefit within the last 12 months.
What is being tested?
Atopic dermatitis is an immune system condition. The investigational drug, amlitelimab, is an immunotherapy that targets the inflammation cascade. It is aimed to calm the immune system to prevent inflammation. Amlitelimab has been shown to be well tolerated by patients in previous clinical studies but is not yet approved for treating atopic dermatitis.
What are the potential side effects?
The most frequently reported side effects in participants who received amlitelimab (reported in ≥ 5% of study participants) and more frequent compared to those who received placebo (a ≥1% difference between amlitelimab compared to placebo) were: nasopharyngitis, COVID-19, and headache.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:

Timeline

Screening ~ 2 weeks
Treatment ~ 24 weeks
Follow Up ~16 weeks
This trial's timeline: 2 weeks for screening, 24 weeks for treatment, and 16 weeks for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Whether 2 different dosing regimens of amlitelimab can help improve the signs and symptoms of atopic dermatitis.
Whether treatment with amlitelimab offers the potential for significant long-term reduction in symptoms.

Awards & Highlights

Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.

Trial Design

3Treatment groups
Experimental Treatment
Group I: Placebo Comparator: once every 4 weeksExperimental Treatment0 Interventions
Subcutaneous injection as per protocol
Group II: Amlitelimab dose 2: once every 12 weeksExperimental Treatment0 Interventions
Subcutaneous injection as per protocol
Group III: Amlitelimab dose 1: once every 4 weeksExperimental Treatment0 Interventions
Subcutaneous injection as per protocol

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
Common treatments for Atopic Dermatitis (AD) include monoclonal antibodies and other systemic therapies that target specific components of the immune system. Monoclonal antibodies like Dupilumab inhibit cytokines such as IL-4 and IL-13, which play key roles in the inflammatory process of AD, thereby reducing inflammation and itching. Amlitelimab, a monoclonal antibody targeting OX40L, modulates T-cell activation and survival, offering another pathway to control the immune response. These targeted therapies are particularly important for patients with moderate to severe AD who do not respond to topical treatments, as they provide more effective symptom management and improve overall quality of life.

Find a Location

Who is running the clinical trial?

SanofiLead Sponsor
2,209 Previous Clinical Trials
4,039,346 Total Patients Enrolled
Clinical Sciences & OperationsStudy DirectorSanofi
876 Previous Clinical Trials
2,021,334 Total Patients Enrolled
~172 spots leftby Sep 2025