Trial reportNeurology(R) neuroimmunology & neuroinflammation2026
Long-Term Ravulizumab Efficacy and Safety in AQP4 Antibody-Positive Neuromyelitis Optica Spectrum Disorder: Final CHAMPION-NMOSD Results.
Trial report in Neurology(R) neuroimmunology & neuroinflammation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04201262 (A Phase 3, External Placebo-Controlled, Open-Label, Multicenter Study to Evaluate the Efficacy and Safety of Ravulizumab in Adult Patients With Neuromyelitis Optica Spectrum Disorder), which is not on this map. Not yet cited in PubMed.
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A Phase 3, External Placebo-Controlled, Open-Label, Multicenter Study to Evaluate the Efficacy and Safety of Ravulizumab in Adult Patients With Neuromyelitis Optica Spectrum Disorder (NMOSD)
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15 authors.
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Abstract
BACKGROUND AND
objectivesRavulizumab, a complement component 5 inhibitor, was approved for the treatment of adults with anti-aquaporin-4 antibody-positive (AQP4-Ab+) neuromyelitis optica spectrum disorder (NMOSD) based on results of the primary treatment period (PTP) of CHAMPION-NMOSD, a phase 3, open-label, external placebo-controlled trial. Here, we report the final efficacy and safety results of CHAMPION-NMOSD (PTP and the long-term extension [LTE]).
methodsAdult patients with AQP4-Ab+ NMOSD received an IV, weight-based loading dose of ravulizumab on day 1 and a maintenance dose on day 15 and every 8 weeks thereafter. After completion of the PTP (up to 2.5 years), patients could enter the LTE. The primary endpoint was time to first adjudicated on-trial relapse. The placebo group of the eculizumab phase 3 trial PREVENT was used as an external comparator because eculizumab availability at CHAMPION-NMOSD initiation precluded the use of concurrent placebo control.
resultsOf 58 patients enrolled in the trial, 56 entered and 55 completed the LTE. The overall median (range) follow-up was 170.3 (11.0-243.0) weeks, with 100.8 (53-137) weeks during the LTE. No patient receiving ravulizumab had an adjudicated on-trial relapse throughout the PTP (84.0 patient-years) and LTE (105.7 patient-years); relative reduction in risk of relapse vs placebo (n = 47) was 98.9% (95% CI 91.8-100; DISCUSSION: Long-term ravulizumab treatment (median follow-up, >3 years) continued to show significant relapse risk reduction in patients with AQP4-Ab+ NMOSD, and the safety profile was consistent with the known safety profile for ravulizumab. TRIAL REGISTRATION INFORMATION: ClinicalTrials.gov, NCT04201262; EudraCT: 2019-003352-37. Submitted December 11, 2019. First patient enrolled: December 13, 2019. clinicaltrials.gov/study/NCT04201262. CLASSIFICATION OF EVIDENCE: This study provides Class III evidence that long-term ravulizumab treatment, as compared with placebo, decreases the probability of clinical relapse in patients with AQP4-Ab+ NMOSD.
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