Alexion completes purchase and licence agreement for early-stage rare disease gene therapy portfolio from Pfizer
Alexion, AstraZeneca Rare Disease, has completed a definitive purchase and licence agreement for a portfolio of preclinical rare disease gene therapy programmes and enabling technologies from Pfizer Inc. (Pfizer).
These new resources build on the combined capabilities of Alexion and AstraZeneca in genomic medicine, with the objective to develop new genetic therapies with improved safety and efficacy profiles. Additionally, several of the Pfizer employees associated with the portfolio will join Alexion as employees.
Alexion has purchased and licenced the assets of Pfizer’s early-stage rare disease gene therapy portfolio for a total consideration of up to $1 billion, plus tiered royalties on sales.
Alexion, AstraZeneca Rare Disease, is the group within AstraZeneca focused on rare diseases, created following the 2021 acquisition of Alexion Pharmaceuticals, Inc. As a leader in rare diseases for nearly 30 years, Alexion is focused on serving patients and families affected by rare diseases and devastating conditions through the discovery, development and commercialisation of life-changing medicines. Headquartered in Boston, Massachusetts, Alexion has offices around the globe and serves patients in more than 50 countries.
AstraZeneca is a global, science-led biopharmaceutical company that focuses on the discovery, development, and commercialisation of prescription medicines in oncology, rare diseases, and biopharmaceuticals, including cardiovascular, renal & metabolism, and respiratory & immunology.

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