LEO Pharma A/S announced that tralokinumab – an investigational, fully human monoclonal antibody that specifically neutralizes the interleukin-13 (IL-13) cytokine – met all primary and secondary endpoints in its three pivotal Phase 3 studies (ECZTRA 1-3) for the treatment of moderate-to-severe atopic dermatitis (AD) in adults. During the studies, the overall adverse event rate was comparable between tralokinumab and placebo.
IL-13 is a key driver of the type 2 inflammation that plays a major role in AD,1 which is the most common inflammatory skin disease in the developed world, affecting up to five percent of adults across the United States, Canada, Europe and Japan. AD can have a significant, negative impact on patients’ well-being, primarily due to distressing itch, sleep deprivation and social stigmatization due to visible lesions.
“In its moderate-to-severe form, AD can cause unbearable recurring symptoms for patients,” said Dr Kim Kjoeller, Executive Vice President, Global Research & Development, LEO Pharma. “Despite recent treatment advances, we consistently hear from healthcare professionals around the world that additional treatment options are needed to address the different signs and symptoms for each patient. We are encouraged by these study results, which show that tralokinumab could be an efficacious and well-tolerated long-term treatment solution for patients living with this debilitating chronic skin disease.”
ECZTRA 1 and ECZTRA 2 (ECZema TRAlokinumab studies no. 1 and 2), are randomized, double-blind, placebo-controlled, multinational, 52-week studies, which included 802 and 794 adult patients respectively, to evaluate the efficacy and safety of tralokinumab as monotherapy in adults with moderate-to-severe AD who are candidates for systemic therapy. ECZTRA 3 is a randomized, double-blind, placebo-controlled, multinational 32-week study, which included 380 adult patients, to evaluate the efficacy and safety of tralokinumab in combination with topical corticosteroids (TCS) in patients with moderate-to-severe AD who are candidates for systemic therapy.
The primary endpoints in the three studies were an Investigator Global Assessment (IGA) score of clear (0) or almost clear (1) skin at week 16 and at least a 75 percent or greater change from baseline in their Eczema Area and Severity Index (EASI) score at week 16. A change from baseline to week 16 in SCORing of Atopic Dermatitis (SCORAD), Pruritus Numeric Rating Scale (NRS) of at least 4, and Dermatology Life Quality Index (DLQI) were secondary endpoints.
LEO Pharma is planning to submit marketing authorization applications for tralokinumab for the treatment of adult patients with moderate-to-severe AD to regulatory agencies in 2020 and plans to submit the detailed results of these studies for presentation at scientific congresses and publication in peer-reviewed medical journals in 2020 as well.