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Encouraging results for arthritis therapeutic brodalumab

  • Amgen (AMGN +0.2%) and collaboration partner AstraZeneca (AZN -0.2%) announce the results of a 168-patient Phase 2 clinical trial evaluating the safety and efficacy of their human mAb brodalumab as a treatment for psoriatic arthritis. At 12 weeks, the therapeutic significantly improved signs and clinical symptoms of the disease as measured by a 20% improvement in the American College of Rheumatology response criteria (ACR20). In addition, many patients continued to improve and sustained their improvements through 52 weeks.
  • The study achieved its primary endpoint of demonstrating superiority vs placebo in ACR20 responses at week 12. 37% of patients treated with 140 mg of brodalumab and 39% treated with 280 mg of brodalumab achieved ACR20 compared to 18% in the placebo group. 14% of patients in both test groups achieved ACR50 (50% improvement) vs 4% in the control group. Patients achieving ACR70 were not significantly higher in the test groups vs placebo.
  • Brodalumab blocks the binding of IL-17 to its receptor and thus inhibits inflammatory signalling.
  • The firms have initiated two Phase 3 studies evaluating brodalumab for psoriatic arthritis.
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