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Risankizumab, an IL-23 inhibitor, for ankylosing spondylitis: results of a randomised, double-blind, placebo-controlled, proof-of-concept, dose-finding phase 2 study.

ABSTRACT: OBJECTIVES:To evaluate the efficacy and safety of risankizumab, a humanised monoclonal antibody targeting the p19 subunit of interleukin-23 (IL-23), in patients with active ankylosing spondylitis (AS). METHODS:A total of 159 patients with biological-naïve AS, with active disease (Bath Ankylosing Spondylitis Disease Activity Index score of ?4), were randomised (1:1:1:1) to risankizumab (18?mg single dose, 90?mg or 180?mg at day 1 and weeks 8, 16 and 24) or placebo over a 24-week blinded period. The primary outcome was a 40% improvement in Assessment in Spondylo Arthritis International Society (ASAS40) at week 12. Safety was assessed in patients who received at least one dose of study drug. RESULTS:At week 12, ASAS40 response rates were 25.5%, 20.5% and 15.0% in the 18?mg, 90?mg and 180?mg risankizumab groups, respectively, compared with 17.5% in the placebo group. The estimated difference in proportion between the 180?mg risankizumab and placebo groups (primary endpoint) was -2.5% (95% CI -21.8 to 17.0; p=0.42). Rates of adverse events were similar in all treatment groups. CONCLUSIONS:Treatment with risankizumab did not meet the study primary endpoint and showed no evidence of clinically meaningful improvements compared with placebo in patients with active AS, suggesting that IL-23 may not be a relevant driver of disease pathogenesis and symptoms in AS. TRIAL REGISTRATION NUMBER:NCT02047110; Pre-results.

SUBMITTER: Baeten D

PROVIDER: S-EPMC6104676 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Risankizumab, an IL-23 inhibitor, for ankylosing spondylitis: results of a randomised, double-blind, placebo-controlled, proof-of-concept, dose-finding phase 2 study.

Baeten Dominique D Østergaard Mikkel M Wei James Cheng-Chung JC Sieper Joachim J Järvinen Pentti P Tam Lai-Shan LS Salvarani Carlo C Kim Tae-Hwan TH Solinger Alan A Datsenko Yakov Y Pamulapati Chandrasena C Visvanathan Sudha S Hall David B DB Aslanyan Stella S Scholl Paul P Padula Steven J SJ

Annals of the rheumatic diseases 20180626 9

<h4>Objectives</h4>To evaluate the efficacy and safety of risankizumab, a humanised monoclonal antibody targeting the p19 subunit of interleukin-23 (IL-23), in patients with active ankylosing spondylitis (AS).<h4>Methods</h4>A total of 159 patients with biological-naïve AS, with active disease (Bath Ankylosing Spondylitis Disease Activity Index score of ≥4), were randomised (1:1:1:1) to risankizumab (18 mg single dose, 90 mg or 180 mg at day 1 and weeks 8, 16 and 24) or placebo over a 24-week bl ...[more]

PMID: 29945918

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Project description:While adalimumab is licensed for ankylosing spondylitis (AS), open uncontrolled studies suggest therapeutic efficacy of TNF-inhibitors in juvenile onset AS (JoAS).A total of 32 patients aged 12 to 17 years with severe, active and refractory JoAS were enrolled in a multicenter, randomized, double-blind, placebo-controlled parallel study of 12 weeks, followed by open-label adalimumab until week 24 for all patients. ASAS40 was used as the primary, and ASAS20, PedACR and single items were used as the secondary outcome measures for the intention to treat population.A total of 17 patients were randomized to receive adalimumab 40 mg/2 weeks and 15 patients received placebo. Two patients (one of each group) discontinued prematurely due to insufficient efficacy and were labeled as non-responders. In the double-blind part, more patients on adalimumab achieved an ASAS40 at week 4 (41%), week 8 (53%) and week 12 (53%) than on placebo (20%, 33%, 33%), while differences at week 8 only reached borderline significance (P = 0.05). Also, at 4, 8 and 12 weeks ASAS20/PedACR30/70 response rates were higher in the adalimumab group (53%/53%/29%; 59%/76%/41%; 53%/65%/53%) compared to placebo (27%/27%/7%; 27%/33%/13%; 33%/40%/27%). In the adalimumab group a significant decrease of all disease activity parameters was noted at week 12 and was even more pronounced at week 24. At week 12 the Bath Ankylosing Spondylitis Disease activity spinal inflammation score decreased by 65% (P <0.001), the back pain score decreased by 50% (P <0.005), the Bath AS Functional Index (BASFI) score decreased by 47% (P <0.02), while the Childhood Health Assessment Questionnaire-Disability Index (CHAQ-DI) score improved by 65% (P <0.005). ANCOVA analysis demonstrated superiority of adalimumab over placebo for the physician global assessment of disease activity, parents' global assessment of subject's overall well-being, active joint count (all P <0.05) and erythrocyte sedimentation rate (ESR) (P <0.01).Adalimumab was well tolerated and highly effective in a double-blind randomized trial in patients with JoAS. Treatment effects rapidly occurred and persisted for at least 24 weeks of treatment.EudraCT 2007-003358-27.

Dataset Information

Risankizumab, an IL-23 inhibitor, for ankylosing spondylitis: results of a randomised, double-blind, placebo-controlled, proof-of-concept, dose-finding phase 2 study.

Publications

Risankizumab, an IL-23 inhibitor, for ankylosing spondylitis: results of a randomised, double-blind, placebo-controlled, proof-of-concept, dose-finding phase 2 study.

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