Avidity Biosciences
2026
$12.0B
Why
Novartis bought Avidity for about $12 billion to acquire antibody-oligonucleotide conjugates for neuromuscular diseases: del-desiran (DM1), delpacibart zotadirsen (Duchenne) and delpacibart braxlosiran (FSHD).
Impact
It was larger than the .7 billion Medicines Company deal of 2020 and the centerpiece of its xRNA neuroscience strategy.
Outcome
Del-desiran missed its Phase 3 HARBOR primary endpoint in September 2026; Novartis has filed for accelerated approval of delpacibart zotadirsen in Duchenne and plans FDA talks for the FSHD program.