LEO Pharma announced that the U.S. Food and Drug Administration (FDA) has approved Adbry (tralokinumab) for the treatment of moderate-to-severe atopic dermatitis in adults 18 years or older whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. Adbry can be used with or without topical corticosteroids. Adbry is the first and only FDA approved biologic that specifically binds to and inhibits the IL-13 cytokine, a key driver of atopic dermatitis signs and symptoms.

“Today’s FDA approval of Adbry is a major milestone for LEO Pharma and for the millions of people living with moderate-to-severe atopic dermatitis who struggle to find a suitable treatment option for this chronic and debilitating disease,” said Anders Kronborg, Chief Financial Officer and Acting Chief Executive Officer of LEO Pharma A/S. “As our first biologic in the U.S., Adbry signifies important progress in our mission of advancing the standard of care in medical dermatology.”

The approval of Adbry is based on safety and efficacy results from the ECZTRA 1, 2 and ECZTRA 3 pivotal Phase 3 trials, which included nearly 2,000 adult patients with moderate-to-severe atopic dermatitis. Safety data was evaluated from a pool of five randomized, double-blind, placebo-controlled trials, including ECZTRA 1, 2 and ECZTRA 3, a dose-finding trial, and a vaccine response trial.

“Atopic dermatitis can be severe and unpredictable, which makes it not only challenging for patients to achieve long-term disease control, but also for clinicians to treat, since there are limited treatment options for this burdensome chronic skin disease,” said Jonathan Silverberg, MD, PhD, MPH, Associate Professor of Dermatology at George Washington University School of Medicine and Health Sciences, and tralokinumab clinical trial investigator. “Adbry will be an important addition to our therapeutic armamentarium as a treatment designed to specifically target and neutralize the IL-13 cytokine, thereby, helping patients manage their atopic dermatitis.”

Adbry will be available in a 150 mg/mL prefilled syringe for subcutaneous injection with an initial dose of 600 mg followed by 300 mg every other week. Adbry can be used with or without TCS. A dosage of 300 mg every four weeks may be considered for patients below 100 kg who achieve clear or almost clear skin after 16 weeks of treatment.

The FDA approval marks the fifth global regulatory approval for tralokinumab in 2021. Tralokinumab is marketed outside of the U.S. under the tradename Adtralza and is currently approved in the European Union, Great Britain, Canada and the United Arab Emirates.