Date: 2015-09-30
Type of information: Publication of results in a medical journal
phase: 3
Announcement: publication of results in The New English Journal of Medicine
Company: Amgen (USA - CA) AstraZeneca (UK)
Product: brodalumab (AMG 827)
Action mechanism: monoclonal antibody. Brodalumab is a highly-selective human monoclonal antibody that binds to and blocks signaling via the interleukin-17 (IL-17) receptor. The IL-17 pathway plays an important role in inducing and promoting inflammatory disease processes. Blocking inflammatory signaling at the IL-17 receptor may be beneficial in the treatment of moderate to severe plaque psoriasis, psoriatic arthritis, and potentially other immune-mediated diseases. In April 2012, Amgen and AstraZeneca have announced an agreement to jointly develop and commercialize five monoclonal antibodies from Amgen's clinical inflammation portfolio (AMG 139, AMG 157, AMG 181, AMG 557 and brodalumab - AMG 827). With oversight from joint governing bodies, Amgen leads clinical development and commercialization for brodalumab (Phase 3 for moderate-to-severe plaque psoriasis and psoriatic arthritis, Phase 2 for asthma) and AMG 557/MEDI5872 (Phase 1b for autoimmune diseases such as systemic lupus erythematosus). AstraZeneca , through its biologics arm MedImmune, leads clinical development and commercialization for MEDI7183/AMG 181 (Phase 2 for ulcerative colitis and Crohn\\\'s disease), MEDI2070/AMG 139 (Phase 2 for Crohn\\\'s disease) and MEDI9929/AMG 157 (Phase 2 for asthma).
Disease: psoriasis
Therapeutic area: Autoimmune diseases - Dermatological diseases
Country: Australia, Belgium, Canada, France, Greece, Hungary, Italy, Latvia, Poland, Russian Federation, USA
Trial details: AMAGINE-3 is a Phase 3 study that assessed the safety and efficacy of brodalumab given at two doses every two weeks via subcutaneous injection compared with placebo and Stelara in patients with moderate-to-severe plaque psoriasis. The study also assessed the safety and efficacy of four maintenance regimens of brodalumab. The primary endpoint comparing brodalumab with Stelara® was the proportion of patients achieving total clearance of skin disease, as measured by PASI 100 at week 12. When comparing brodalumab with placebo, the primary endpoints included the proportion of patients achieving at least a 75 percent improvement from baseline in disease severity (PASI 75) at week 12, and the achievement of clear or almost clear skin, according to the sPGA (0 or 1) at week 12. The study began with a 12-week, double-blind, active comparator- and placebo-controlled induction phase, where patients were randomized in a 2:2:1:1 ratio to receive brodalumab (210 mg or 140 mg), Stelara® (per the labeled dose), or placebo. At week 12, patients originally randomized to either brodalumab arm were re-randomized 2:2:2:1 into the maintenance phase to receive brodalumab 210 mg or 140 mg at four different maintenance regimens. Patients originally randomized to Stelara® continued to receive the same treatment, and those originally randomized to receive placebo began 210 mg of brodalumab every two weeks. At week 52, patients entered the long-term extension portion of the study, and those who were originally randomized to receive Stelara began receiving 210 mg of brodalumab every two weeks. All other patients continued on treatment with brodalumab at the same dose they were being treated with at week 52. Patients may be enrolled in the study for up to 271 weeks (approximately five years). (NCT01708629)
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