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Risankizumab proves more effective in psoriasis than ustekinumab
Two phase 3 trials suggested that risankizumab can do more to improve quality of life, with similar safety.
Risankizumab, an interleukin-23 inhibitor, has been approved by the Food and Drug Administration for treating moderate to severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy, the manufacturer announced on April 23.
Risankizumab selectively inhibits interleukin-23 (IL-23), a key inflammatory protein, by binding to its p19 subunit. The drug is administered at a dose of 150 mg, in two subcutaneous injections, every 12 weeks, after starting doses at weeks 0 and 4. It will be available in early May, according to an AbbVie press release announcing the approval.
The approval was based in part on data from two phase 3, 2-year studies, In UltIMMA-1 and UltIMMA-2, at 16 weeks, 75% of risankizumab patients in both studies achieved a Psoriasis Area and Severity Index (PASI 90), compared with 5% and 2% of those on placebo, respectively. These results were published in 2018 (Lancet. 2018 Aug 25;392[10148]:650-61).
At 1 year, 82% and 81% of those treated with risankizumab in the two studies achieved a PASI 90, and 56% and 60% achieved a PASI 100, respectively, according to the company.
Approval was also based on additional phase 3 studies, IMMhance and IMMvent.
Upper respiratory infections were among the most common adverse events associated with risankizumab in trials, reported in 13%, according to the company. Other adverse events associated with treatment included headache (3.5 %), fatigue (2.5 %), injection site reactions (1.5%) and tinea infections (1.1%). The AbbVie release states that candidates for treatment should be evaluated for tuberculosis before starting therapy, and patients should be instructed to report signs and symptoms of infection.
Risankizumab, which will be marketed as Skyrizi, was recently approved in Canada for the same indication, and in Japan, for plaque psoriasis, generalized pustular psoriasis, erythrodermic psoriasis and psoriatic arthritis in adults. It currently is under review in Europe.
AbbVie and Boehringer Ingelheim are collaborating on the development of risankizumab, according to an AbbVie press release. Studies of risankizumab for treatment of psoriatic arthritis and Crohn’s disease are underway.
