Prime Medicine Secures Up to $24 Million in Additional Funding from Cystic Fibrosis Foundation for Gene Editing Therapies

PRME
October 06, 2025

Prime Medicine, Inc. announced that the Cystic Fibrosis Foundation (CFF) has committed up to an additional $24 million in funding to accelerate the development of Prime Editors for cystic fibrosis (CF)-related lung disease. This expanded funding builds upon an initial agreement from January 2024, underscoring the CFF's confidence in Prime Editing as a potentially curative approach for CF. The company plans to leverage its technology's versatility to address multiple disease-causing mutations.

The initial focus of this additional funding will be on a program targeting the G542X mutation, which is one of the most prevalent CF-causing nonsense mutations and currently lacks available therapies. Prime Medicine will also continue advancing hotspot and PASSIGE-based approaches for other CF mutations, utilizing funds from its initial 2024 commitment. This strategic funding supports the company's efforts to develop a one-time, potentially curative treatment for CF.

The $24 million in additional funding will be provided in two tranches, contingent on certain closing conditions and scientific milestones. The first tranche includes a $6 million equity investment in Prime Medicine. This capital infusion strengthens the company's financial resources and supports the continued advancement of a key pipeline program.

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