
Angelman setback dents Ultragenyx as apazunersen fails in Phase III trial
Ultragenyx's Phase III Aspire trial of apazunersen in Angelman syndrome missed both its primary endpoint and a key secondary endpoint, prompting a ~43% after-hours stock drop; the company will review the program and pursue significant expense reductions, while analysts warn commercialization could be challenging even if other Angelman studies meet endpoints.




