Denali Therapeutics Plans Accelerated Approval Filing for Tividenofusp Alfa in MPS II
• Denali Therapeutics plans to submit a Biologics License Application (BLA) to the FDA in early 2025 for tividenofusp alfa (DNL310) to treat Mucopolysaccharidosis type II (MPS II).
• The FDA has indicated that cerebrospinal fluid heparan sulfate (CSF HS) can serve as a surrogate biomarker to support accelerated approval of tividenofusp alfa in MPS II.
• Phase 1/2 data presented at SSIEM 2024 showed a 90% mean reduction in CSF HS and improvements in clinical outcomes with tividenofusp alfa treatment in MPS II patients.
• Tividenofusp alfa is currently being evaluated in the Phase 2/3 COMPASS study, with plans for full approval contingent upon the study's completion.