Frequently asked questions (FAQs)

About ZILBRYSQ and generalized myasthenia gravis (gMG)

In gMG, pathogenic immunoglobulin G (IgG) autoantibodies attack key proteins, most commonly the acetylcholine receptor (AChR), in the neuromuscular junction (NMJ). This prevents acetylcholine (ACh) binding, reduces receptor density, and activates the complement system.1

Learn more about complement activation in gMG.

Treatment With ZILBRYSQ

ZILBRYSQ is the first FDA-approved self-administered complement component 5 (C5) inhibitor for the treatment of generalized myasthenia gravis (gMG) in adult patients who are anti-acetylcholine receptor (AChR) antibody positive.1,3

See the clinical trial data.

REMS and Safety

ZILBRYSQ is available only through the ZILBRYSQ REMS, due to the risk of serious meningococcal infections.3

ZILBRYSQ, a complement inhibitor, increases a patient’s susceptibility to serious, life-threatening, or fatal infections caused by meningococcal bacteria (septicemia and/or meningitis) in any serogroup, including non-groupable strains.3

  • Life-threatening and fatal meningococcal infections have occurred in both vaccinated and unvaccinated patients treated with complement inhibitors
  • ZILBRYSQ is contraindicated for initiation in patients with unresolved Neisseria meningitidis infection.

Learn more about ZILBRYSQ REMS.

Dosing & Administration / Starting ZILBRYSQ

ZILBRYSQ is a once daily SC self-injection that fits into patients’ daily lives and can be taken at home or away.1,3

Learn more about dosing and administration.

References:

  1. Howard JF Jr, Bresch S, Genge A, et al; RAISE Study Team. Safety and efficacy of zilucoplan in patients with generalised myasthenia gravis (RAISE): a randomised, double-blind, placebo-controlled, Phase 3 study. Lancet Neurol. 2023;22(5):395-406. doi:10.1016/S1474-4422(23)00080-7
  2. Mantegazza R, Vanoli F, Frangiamore R, et al. Complement inhibition for the treatment of myasthenia gravis. Immunotargets Ther. 2020;9:317-331. doi:10.2147/ITT.S261414
  3. ZILBRYSQ [Prescribing Information]. Smyrna, GA: UCB, Inc. 
  4. Howard JF Jr, Bresch S, Farmakidis C, et al. Long-term safety and efficacy of zilucoplan in patients with generalized myasthenia gravis: interim analysis of the RAISE-XT open-label extension study. Ther Adv Neurol Disord. 2024;17(3):1-16. doi:10.1177/17562864241243186
  5. Data on file. UCB, Inc.
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