bluebird bio

bluebird bio is a commercial-stage biotherapeutics company focused on developing and delivering gene therapies for severe genetic diseases. With more than a decade of scientific leadership in gene therapy and three FDA-approved therapies for sickle cell disease, β-thalassemia, and cerebral adrenoleukodystrophy, the company is committed to ensuring access, reliability, and patient-centered care. bluebird is headquartered in Somerville, Massachusetts.

SK Capital and Carlyle acquired bluebird bio in June 2025.