What the trial was testing
The UltIMMa-1 enrolled 506 patients with plaque psoriasis. The study was sponsored by AbbVie and tracked outcomes across the full group of patients who matched the trial's eligibility profile.
It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.
What the results showed
75% achieved 90% clearer skin at 16 weeks — vs. 5% on placebo.
The Lancet · 2018 · NCT02684370
These findings — that of patients with at least 90% skin clearance at week 16 on risankizumab vs. placebo — were published in the The Lancet and represent the headline result of the study.
Researchers tracked outcomes across 506 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.
What this means for patients
For patients with plaque psoriasis, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.
What you can do now
Risankizumab (Skyrizi) is FDA-approved for moderate-to-severe plaque psoriasis and available now. After two starter doses, it is given as a single injection every 12 weeks — among the longest dosing intervals in psoriasis. Ask a dermatologist whether it fits your case.
Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.
Open plaque psoriasis trials
Study to Assess Change in Quality of Life of Risankizumab Treatment in Adult Participants With Moderate-to-Severe Plaque Psoriasis
Psoriasis is a chronic, systemic, inflammatory disease in which skin cells build up and develop thick, red and white scaly patches on the skin. This study will assess the change in quality of life of risankizumab treatment in adult participants with moderate to severe plaque psoriasis real-world clinical practice. Risankizumab is an approved drug for treating participants with Psoriasis. Approximately 700 participants who are prescribed risankizumab by their physician in accordance with local label will be enrolled in approximately 70 sites worldwide. Participants will receive risankizumab as prescribed by their physician according to their routine clinical practice and local label. Participants will be followed for up to 2.5 years. There is expected to be no additional burden for participants in this trial. Participants will attend regular visits during the study at a hospital or clinic according to their routine clinical practice.
A Study to Evaluate the Efficacy and Safety of Bimekizumab Compared to Ustekinumab in Children and Adolescents From 6 Years to Less Than 18 Years of Age With Moderate to Severe Plaque Psoriasis
The primary purpose of this study is to evaluate the efficacy of bimekizumab administered subcutaneously (sc) compared to active control (ustekinumab) in children and adolescents aged 6 to \<18 years of age with moderate to severe plaque psoriasis (PSO).