Clinical trial Recruiting at 80 sites Phase 2 Interventional Ages 18 and up

Long-term safety and effectiveness of APG777 in moderate-to-severe atopic dermatitis

Official title: A Long-term Extension Study to Evaluate the Safety and Efficacy of APG777 in Patients With Atopic Dermatitis Previously Treated With APG777

Run by Apogee Therapeutics, Inc. · NCT07003425 · Data updated 2026-11-12

This long-term extension will see if continued APG777 is safe and helpful for people with moderate-to-severe atopic dermatitis who completed a prior APG777 study.

More Atopic Dermatitis trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment350 (estimated)
SponsorApogee Therapeutics, Inc.
Industry-sponsored
Locations80 sites (Fountain Valley, California and 79 other locations)
StatusRecruiting
StartedMay 14, 2025
Main results expectedDecember 2029
Study endsDecember 2029
Registry record updatedNovember 3, 2026
Trial IDNCT07003425 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are people with moderate-to-severe atopic dermatitis who completed the APG777 parent study treatment period and whom the investigator believes would benefit from continued treatment.

Probably not a fit

Patients who experienced adverse events on APG777, who terminated the parent study early, or who used prohibited medications are unlikely to benefit or be eligible for this extension.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter, double-blind long-term extension enrolls participants who completed the treatment period in a prior APG777 parent study and who may benefit from continued therapy. The LTE includes a screening visit coinciding with the last maintenance visit of the parent study, an extended treatment period where participants continue APG777, and a post-treatment follow-up period. Participants continue the same non-prescription emollient they used in the parent study and are monitored for safety and efficacy outcomes and adverse events. Those with serious adverse events or who discontinued the parent study early are excluded.

Why it matters

Potential benefit: If successful, long-term APG777 could provide a safe, sustained treatment option that reduces symptoms and flare-ups for people with moderate-to-severe atopic dermatitis.

How similar studies have gone: Parent APG777 studies have completed treatment phases, but long-term extension data remain limited, so durable benefit and long-term safety are not yet established.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Participants who have completed the Treatment Period in a prior APG777 study and were, in the Investigator's opinion, compliant with the study protocol
* Participants who, in the Investigator's opinion, would benefit from long-term treatment with APG777
* Use the same non-prescription non-medicated emollient/moisturizer of their choice from the last day of the Parent Study and throughout the LTE study

Exclusion Criteria:

* Participants who have developed an AE while participating in the Parent Study, which, in the opinion of the Investigator or of the Medical Monitor, could indicate that continued treatment with APG777 may present an unreasonable risk for the patient
* Participants who terminated early from the Parent Study or permanently discontinued the study drug during the Parent Study
* Use of any of the prohibited medications from Screening Visit (Visit 1) of the LTE study
* Presence of dermatologic conditions and/or comorbidities that might confound the diagnosis of AD and/or interfere with study assessments

Note: Additional protocol defined Inclusion/Exclusion criteria may apply

Where it's running

  • Investigational Site
    Fountain Valley, California, United States
    Recruiting
  • Investigational Site
    Los Angeles, California, United States
    Recruiting
  • Investigational Site
    Coral Gables, Florida, United States
    Recruiting
  • Investigational Site
    Jacksonville, Florida, United States
    Recruiting
  • Investigational Site
    Margate, Florida, United States
    Recruiting
  • Investigational Site
    Douglasville, Georgia, United States
    Recruiting
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  • Investigational Site
    Skokie, Illinois, United States
    Recruiting
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    Bowling Green, Kentucky, United States
    Recruiting
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    Rockville, Maryland, United States
    Recruiting
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    Detroit, Michigan, United States
    Recruiting
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    Troy, Michigan, United States
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    New York, New York, United States
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    Wilmington, North Carolina, United States
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    Boardman, Ohio, United States
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    Mason, Ohio, United States
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    Portland, Oregon, United States
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    Pittsburgh, Pennsylvania, United States
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    Charleston, South Carolina, United States
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    Nashville, Tennessee, United States
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    Dallas, Texas, United States
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    Frisco, Texas, United States
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    San Antonio, Texas, United States
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    Mill Creek, Washington, United States
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  • Investigational Site
    Calgary, Alberta, Canada
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    Calgary, Alberta, Canada
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    Edmonton, Alberta, Canada
    Recruiting
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    Vancouver, British Columbia, Canada
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    Fredericton, Brunswick, Canada
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    Ajax, Ontario, Canada
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    Markham, Ontario, Canada
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    Mississauga, Ontario, Canada
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    Ottawa, Ontario, Canada
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    Peterborough, Ontario, Canada
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    Toronto, Ontario, Canada
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    Toronto, Ontario, Canada
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    Toronto, Ontario, Canada
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    Montreal, Quebec, Canada
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    Québec, Quebec, Canada
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    Prague, Prague, Czechia
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    Prague, Prague Motol, Czechia
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    Prague, Vinohrady, Czechia
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    Prague, Czechia
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    Prague, Czechia
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    Martigues, France
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    Freiburg im Breisgau, Baden-Wurttemberg, Germany
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    Heidelberg, Baden-Wurttemberg, Germany
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    Tübingen, Baden-Wurttemberg, Germany
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    Augsburg, Bavaria, Germany
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    München, Bavaria, Germany
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  • Investigational Site
    Blankenfelde-Mahlow, Brandenburg, Germany
    Recruiting

+30 more sites. See ClinicalTrials.gov for the full list.

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.