BioMarin secures worldwide Fabry license for HM15421/GC1134A with GC Hanmi
Oct 29, 2026, 9:04 AM EDT1 sourcesAI-analyzed
Why it may matterVerify against the original reporting
Adds a meaningful pipeline asset with milestone/royalty upside; small upfront but potential long-term revenue and competitive differentiation via subcutaneous dosing. Limited near-term revenue; however, positive pipeline optics could lift BioMarin's valuation as data emerge.
AI summary
What happened, with direct paths to the underlying reporting
BioMarin signed an exclusive worldwide license outside Korea for HM15421/GC1134A, a long-acting subcutaneous enzyme replacement therapy for Fabry disease. The deal provides BioMarin with an upfront $70 million and potential milestones up to $405 million plus royalties, expanding its Fabry portfolio post-Amicus acquisition. The program is in Phase 1/2, with Korea rights retained by GC/Hanmi, and could yield a first subcutaneous Fabry treatment if successful.
BioMarin licenses HM15421/GC1134A for Fabry outside Korea. Upfront $70M; up to $405M milestones.
GC Biopharma and Hanmi retain Korea rights; BioMarin leads outside Korea after Phase 1/2.
HM15421/GC1134A is a long-acting, subcutaneous enzyme replacement therapy (a-Gal A) for Fabry.
Orphan Drug Designation granted to HM15421/GC1134A in 2024, potential first subcutaneous Fabry ERT.
Deal builds on BioMarin's Amicus acquisition and expands Fabry portfolio and patient reach.
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