Long-Term Safety and Effectiveness Study of APG777 in Adults With Atopic Dermatitis Who Finished Previous APG777 Treatment

What this Trial Is About

Researchers are evaluating the long-term safety and effectiveness of APG777 in adults with moderate-to-severe atopic dermatitis who have completed treatment in a previous APG777 study. This phase 2 extension study involves participants who, according to their doctors, would benefit from continued treatment with APG777. The study is designed as a multicenter, double-blind trial to assess ongoing treatment outcomes and safety over several years. Participants in this study will continue receiving APG777 through three main periods a screening visit coinciding with the last visit of the prior studys maintenance period, an extended treatment period, and a post-treatment follow-up period. Participants who met certain skin improvement criteria and did not use topical rescue medication during the prior study will maintain their previous dose and injection frequency. Those who did not meet these criteria or used rescue medication will receive APG777 according to a specific dosing plan in an open-label escape arm. During the study, participants will be closely monitored for treatment-emergent adverse events up to 3 years. The research team will also measure skin improvements using tools such as the Eczema Area and Severity Index EASI and the Investigator Global Assessment for Atopic Dermatitis vIGA-AD, as well as tracking itch severity, use of rescue therapy, and serum drug concentrations. The overall participation time includes up to 3 years of follow-up to evaluate long-term safety and efficacy outcomes.

A Long-term Safety and Efficacy Study Evaluating APG777 in Atopic Dermatitis