Anti-IL-17 Agents for Psoriasis: A Review of Phase III Data

Benjamin Farahnik, Kourosh Beroukhim, Mio Nakamura, Michael Abrouk, Tian Hao Zhu, Rasnik Singh, Kristina Lee, Tina Bhutani, John Koo
Journal of Drugs in Dermatology: JDD 2016, 15 (3): 311-6

BACKGROUND: Studies investigating the molecular basis of psoriasis have established the central roles of TNFa, interleukin (IL)-12, IL-22 and IL-23, and now there is increasing evidence that IL-17 plays a vital role in the complex pathophysiology of this disease. Preclinical and phase II studies of medications targeting IL-17 and its receptor have thus far proved to be promising.

METHODS: We reviewed the results of the phase III clinical trials for the anti-IL-17 agents secukinumab, ixekizumab and brodalumab in order to assess the efficacy and safety profile of each agent.

RESULTS: By week 12, the proportion of patients reaching a 75% improvement from baseline Psoriasis Area and Severity Index (PASI 75) was comparable between the different agents (secukinumab 83%, ixekizumab 89%, and brodalumab 85%). The safety profiles of the agents were similar with the most frequently reported adverse events of nasopharyngitis, upper respiratory infections, headache, and injection site reaction.

CONCLUSION: The anti-IL-17 agents demonstrated a rapid and robust clinical improvement accompanied by a favorable short-term safety profile. The results of the phase III trials continue to reinforce the theory that the IL-17 pathway is an essential target in psoriasis treatment.

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