Novartis to Acquire Avidity Biosciences; SpinCo to Launch as Independent Public Company

October 27, 2025 | Monday | Business Deal

Avidity Biosciences, Inc., a biopharmaceutical company committed to delivering a new class of RNA therapeutics called Antibody Oligonucleotide Conjugates to profoundly improve people's lives, announced that it has entered into a definitive merger agreement with Novartis AG ("Novartis") which has been unanimously approved by the Boards of Directors of both companies. The acquisition will follow the separation of Avidity's early-stage precision cardiology programs into SpinCo, which is expected to be a publicly traded company. SpinCo will be led by Kathleen Gallagher, currently Avidity's chief program officer, as chief executive officer. Sarah Boyce, currently Avidity's chief executive officer, will serve as chair of the board.

"Avidity has expanded the possibilities of what RNA therapeutics can deliver to patients by advancing innovative science and creating an organization with a strong commitment to providing access to our potential medicines. We are confident that this transaction with Novartis maximizes value for our investors and will support the global expansion of our neuroscience pipeline," said Sarah Boyce, president and chief executive officer of Avidity. "I am incredibly proud of what we have created in close collaboration with the patient and clinical communities we serve, and I want to thank them and the Avidity team for their commitment and dedication."

Novartis will acquire Avidity's programs and pipeline in neuroscience and gain access to its differentiated RNA-targeting delivery platform. The agreement includes three late-stage clinical development programs: delpacibart zotadirsen (del-zota) for the treatment of Duchenne muscular dystrophy (DMD), delpacibart etedesiran (del-desiran) for the treatment of myotonic dystrophy type 1 (DM1) and delpacibart braxlosiran (del-brax) for the treatment of facioscapulohumeral muscular dystrophy (FSHD). 

SpinCo will focus on Avidity's early-stage programs in precision cardiology. Key programs include AOC 1086 and AOC 1072, which target rare genetic cardiomyopathies, including phospholamban (PLN) and Protein Kinase AMP-activated non-catalytic subunit Gamma 2 ("PRKAG2") Syndrome, respectively. SpinCo will also encompass collaborations with Bristol Myers Squibb and Eli Lilly and Company and hold rights to continue the development of Avidity's proprietary platform, including next-generation technology improvements, for applications in the cardiology field.  

"We have already seen the tremendous impact targeted delivery of RNA therapeutics to muscle can have for people living with rare diseases based on the impressive advancements Avidity has made with its neuroscience programs," said Kathleen Gallagher, currently chief program officer at Avidity. "Avidity's precision cardiology pipeline is poised to progress rapidly, and I am excited to lead the team that will build on our groundbreaking AOC platform with the potential to address high unmet need in cardiovascular diseases." 

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