Risankizumab Outperforms Humira, Stelara in Treating Plaque Psoriasis

As AbbVie’s best-selling Humira faces oncoming biosimilar competition, the drug maker is developing a new innovator product that could help it retain a hold on the market; new results from 3 phase 3 clinical trials show AbbVie’s investigational interleukin-23 inhibitor, risankizumab, to be more effective than adalimumab (Humira) or ustekinumab (Stelara) in patients with moderate-to-severe plaque psoriasis.
Jackie Syrop
October 26, 2017
As AbbVie’s best-selling Humira faces oncoming biosimilar competition, the drug maker is developing a new innovator product that could help it retain a hold on the market; new results from 3 recent phase 3 clinical trials show AbbVie’s investigational interleukin-23 (IL-23) inhibitor, risankizumab, to be more effective than adalimumab (Humira) or ustekinumab (Stelara) in patients with moderate-to-severe plaque psoriasis.

All 3 trials met the co-primary endpoints of at least a 90% improvement in symptoms in the Psoriasis Area and Severity Index (PASI 90), and a score of clear or almost clear as measured by the static Physician Global Assessment (sPGA) scale at week 16, compared with placebo or adalimumab.

“What is particularly exciting is the number of patients who achieved high rates of skin clearance in these 3 head-to-head clinical trials,” said Michael Severino, MD, AbbVie’s executive vice president of research and development and chief scientific officer. “Risankizumab has the potential to provide a meaningful new treatment option for people living with psoriasis.”

Two of the trials reported [ultIMMA-1 (n = 506) and ultIMMa-2 (n= 491)] were replicate phase 3 trials evaluating the safety and efficacy of risankizumab (150 mg) compared with placebo or ustekinumab (45 mg or 90 mg based on patient weight). The third trial, IMMvent, studied risankizumab versus adalimumab (n = 605).

AbbVie notes that phase 3 trials of risankizumab in psoriasis are ongoing, and the drug is also being investigated to treat Crohn’s disease and psoriatic arthritis. Future trials are planned to investigate risankizumab in ulcerative colitis.

Risankizumab Versus Placebo or Ustekinumab (ultIMMA-1 and ultIMMa-2)
After 16 weeks of treatment, 75% of patients receiving risankizumab in both studies achieved a response of PASO 90, compared with 5% of patients receiving placebo in ultIMMa-1 and 2% receiving placebo in ultIMMa-2. These response rates were significantly greater than the ustekinumab PASI 90 response rates of 42% (ultIMMa-1) and 48% (ultIMMa-2). Additionally: 

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