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UCB announces U.S. FDA approval for ZILBRYSQ® (zilucoplan) autoinjector self-administration for adults living with generalized myasthenia gravis

$UCBPress releaseOct 16, 2026, 7:00 AM ETRead the release

UCB received U.S. FDA approval for a once-daily, self-administered autoinjector option for ZILBRYSQ (zilucoplan) in adults with generalized myasthenia gravis who are anti-AChR antibody positive. The approval is the first macrocyclic peptide C5 inhibitor approved as a self-administered subcutaneous autoinjector for gMG and is supported by bioequivalence data showing 99.8% complete dose delivery across 449 administrations.

Key figures

Drug Name
ZILBRYSQ (zilucoplan) autoinjector
Phase Of Trial
Phase 3b
Phase3b study n
31
Ucb 2025 revenue
€7.7 billion
Bioequivalence study n
14
Complete dose delivery rate
99.8%
Human factors first attempt success
90%

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