
Opinion|Videos|October 11, 2024
Complement Inhibitors in NMOSD
Author(s)Sean Pittock, MD
Key Takeaways
- Ravulizumab, a complement inhibitor, is FDA-approved for NMOSD, offering a longer half-life than eculizumab, allowing for extended dosing intervals.
- The standard dosing regimen for ravulizumab includes an initial loading dose followed by maintenance doses every eight weeks.
Sean Pittock, MD, discusses how complement inhibitors are positioned in the treatment landscape of neuromyelitis optica spectrum disorder, providing an overview of ravulizumab, the most recent FDA-approved treatment, including its development rationale, half-life, dosing regimen, and new signals from the recently presented 138-week long-term extension data at EAN 2024.
Advertisement
Episodes in this series

Video content above is prompted by the following:
- Where do complement inhibitors fit in the treatment landscape of neuromyelitis optica spectrum disorder (NMOSD)? Which complement inhibitors are approved for NMOSD?
- Please provide an overview of ravulizumab, the most recent FDA-approved treatment for NMOSD, the rationale for its development, half-life, and dosing regimen.
- Long-term extension (138-week) data with ravulizumab were recently presented at EAN 2024.
- Are there any new signals in the long-term extension study?
Advertisement
Related to this article

The Accelerating Access to Critical Therapies for ALS Reauthorization Act of 2026 extends federal support for ALS research and expanded access to investigational therapies, with additional provisions addressing clinical trial oversight and regulatory planning.

New 12-month interim data showed functional gains with BBP-418 vs placebo, consistent benefit across genotype, age, and baseline pulmonary function subgroups, and a safety profile comparable to placebo.

Real-world 12‑month results from WeSMA, a phase 4 study, showed that oral risdiplam is well tolerated in adults with SMA, with stable motor function and consistent safety findings.

A phase 4 study is evaluating whether adults with chronic inflammatory demyelinating polyneuropathy can transition from intravenous immunoglobulin to subcutaneous efgartigimod PH20 without first experiencing disease worsening.

A new phase 4 trial, OCTAGON, will test a rapid, predefined corticosteroid-tapering schedule in patients with generalized myasthenia gravis treated with ravulizumab.

PETUNIA, a new global pharmacovigilance study, will track pregnancy, maternal, and infant outcomes among patients with gMG exposed to nipocalimab.

In a pivotal phase 3 study, once-daily tasimelteon 20 mg shifted sleep onset 37.1 minutes earlier than placebo in adults with delayed sleep-wake phase disorder.
Advertisement
Advertisement
Trending on NeurologyLive - Clinical Neurology News and Neurology Expert Insights
1
FDA Approves Tavapadon for the Treatment of Parkinson Disease
2
FDA Accepts Fenebrutinib NDA Under Priority Review for Relapsing and Primary Progressive MS
3
ADHERE REAL Study to Assess Real-World Effectiveness of Efgartigimod in CIDP
4
Phase 4 OCTAGON Trial to Test Rapid Steroid Taper With Ravulizumab
5



