• Ionis Pharmaceuticals is moving forward with Phase 3 trials for ION582, an antisense therapy designed to unsilence the paternal UBE3A gene in Angelman syndrome patients, after Biogen declined to license the drug.
• In the Phase 1/2 HALOS study, 97% of participants receiving medium or high doses of ION582 showed improvements in communication, cognition, and motor function, with favorable safety profiles.
• The race to develop treatments for Angelman syndrome is intensifying, with Ultragenyx's GTX-102 already in Phase 3 trials and Neuren Pharmaceuticals advancing an oral synthetic peptide, highlighting significant progress in addressing this rare genetic disorder.