A Randomised, Double-Blind, Placebo-Controlled Phase 3 Study Of Lenabasum In Diffuse Cutaneous Systemic Sclerosis: Resolve-1 Design And Rationale

CLINICAL AND EXPERIMENTAL RHEUMATOLOGY(2021)

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摘要
Objective. The multi-systemic, heterogenous nature of diffuse cutaneous systemic sclerosis (dcSSc) presents challenges in designing clinical studies that can demonstrate a treatment effect on overall disease burden. We describe the design of the first Phase 3 study in dcSSc patients where the American College of Rheumatology (ACR) Combined Response Index in diffuse cutaneous Systemic Sclerosis (CRISS) score was chosen prospectively as the primary outcome. The CRISS measures key clinical disease parameters and patient-reported outcomes (PROs).Methods. RESOLVE-1 is a Phase 3, randomised, double-blind, placebo-controlled trial of dcSSc patients evaluating the efficacy and safety of lenabasum. Patients >= 18 years of age with dcSSc and disease duration <= 6 years were eligible. Patients could continue stable background therapy for dcSSc, including stable immunosuppressive therapies. They were randomised to lenabasum 5 or 20 mg twice daily or placebo. The primary efficacy outcome was the mean change from baseline to 52 weeks in the ACR CRISS score.Results. The study enrolled 365 patients over 1.5 years at 77 sites in 13 countries in North America, Europe, Israel, and Asia-Pacific, with the last patient first visit on May 1, 2019.Conclusion. RESOLVE-1 is the first Phase 3 interventional study to date in dcSSc to prospectively use the ACR CRISS as the primary efficacy outcome. Eligibility criteria allowed background therapy as might occur in clinical practice. This approach also facilitated timely patient enrolment. RESOLVE-1 provides a novel study design that may be used for future Phase 3 dcSSc studies to assess the holistic efficacy of therapy.
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关键词
lenabasum, systemic sclerosis, study design, rationale
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