FDA has approved the expanded label for LEO Pharma’s Adbry® (tralokinumab-ldrm) to include pediatric patients aged 12-17 years with moderate-to-severe atopic dermatitis (AD) whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. Adbry is the first and only FDA-approved biologic that specifically binds to and inhibits interleukin (IL)-13.
Dosage for pediatric patients aged 12-17 years is an initial loading dose of 300mg, followed by a 150mg dose every two weeks.
The approval is based on data from the Phase 3 ECZTRA 6 trial, which evaluated the efficacy and safety of Adbry in 289 pediatric patients aged 12-17 years with moderate-to-severe AD who were candidates for systemic therapy. A total of 98 patients received an initial dose of Adbry 300mg followed by 150mg every other week up to Week 16. The trial met its primary and key secondary endpoints:
- More than five times as many pediatric patients had clear or almost clear skin with Adbry compared to placebo: 21% of patients who received Adbry achieved an Investigator’s Global Assessment (IGA) score of 0 (“clear”) or 1 (“almost clear”) compared to 4% who received placebo.1
- Approximately five times as many pediatric patients saw a substantial disease improvement with Adbry compared to placebo: 29% of patients who received Adbry achieved at least a 75% improvement in their Eczema Area and Severity Index score (EASI-75) compared to 6% who received placebo.1
- More than seven times as many pediatric patients experienced significantly reduced itch with Adbry compared to placebo: 23% of patients who received Adbry achieved at least a four-point reduction in Adolescent Worst Pruritis Numerical Rating Scale (NRS) compared to 3% with placebo.1
- In ECZTRA-6, a higher proportion of pediatric patients who received Adbry achieved at least a 90% improvement in their Eczema Area and Severity Index score (EASI-90) compared to placebo.
The safety of Adbry, assessed through the initial treatment period of 16 weeks and the long-term period of 52 weeks, was comparable to the safety profile from trials in adults with atopic dermatitis. In the ECZTRA 1, 2, and ECZTRA 3 adult trials, the most common adverse events (incidence ≥1%) were upper respiratory tract infections (mainly reported as the common cold), conjunctivitis, injection site reactions, and eosinophilia.