AstraZeneca eyes first-line gMG market with self-administered gefurulimab

24 July 2025

UK pharma major AstraZeneca (LSE: AZN) is preparing to advance gefurulimab as a potential new treatment for generalized myasthenia gravis, following positive results in a global Phase III trial that could pave the way for regulatory filings.

The investigational therapy, developed by AstraZeneca’s Alexion rare disease unit, met both its primary and all secondary endpoints in the PREVAIL study, which enrolled 260 adults living with a certain kind of gMG.

AstraZeneca said gefurulimab was well tolerated, with no new safety concerns emerging in the study. The company now plans to share the results with health authorities and present the data at an upcoming medical conference.

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