Success for brodalumab in comparison with Stelara in AMAGINE-2 trial for Psoriasis - AstraZeneca/Amgen

AstraZeneca and Amgen announced that AMAGINE-2™, a pivotal, multi-arm Phase III trial evaluating two doses of brodalumab in more than 1,800 patients with moderate-to-severe plaque Psoriasis , met its primary endpoints when compared with both Stelara (ustekinumab) and placebo at week 12. Brodalumab 210 mg given every two weeks and the brodalumab weight-based analysis group were each shown to be superior to Stelara on the primary endpoint of achieving total clearance of skin disease, as measured by the Psoriasis Area Severity Index (PASI 100).

When compared with placebo, a significantly greater proportion of patients treated with brodalumab achieved at least a 75 percent improvement from baseline in disease severity at week 12, as measured by the Psoriasis Area Severity Index (PASI 75). A significantly greater proportion of patients treated with brodalumab also achieved clear or almost clear skin at week 12 compared with placebo, according to the static Physician Global Assessment (sPGA 0 or 1). Results showed that 44.4 percent of patients in the brodalumab 210 mg group, 33.6 percent of patients in the brodalumab weight-based group, 25.7 percent of patients in the brodalumab 140 mg group, 21.7 percent of patients in the Stelara group and 0.6 percent of patients in the placebo group achieved total clearance of skin disease (PASI 100).

In addition, 86.3 percent of patients in the brodalumab 210 mg group, 77.0 percent of patients in the brodalumab weight-based group, 66.6 percent of patients in the brodalumab 140 mg group, 70.0 percent of patients in the Stelara group and 8.1 percent of patients in the placebo group achieved PASI 75. The most common adverse events that occurred in the brodalumab arms (more than 5 percent of patients in either group) were common cold, upper respiratory tract infection, headache and joint pain.