Pipeline as recorded in the Atlas on Aug 25, 2026. Companies revise pipelines frequently — verify against the company's own materials and regulatory filings.
In one paragraph
bluebird bio developed approved gene therapies for beta thalassemia, sickle cell disease and a rare brain disorder, using viruses to add working genes rather than editing existing ones. Its scientific record is strong and its commercial history difficult: extremely expensive one-time treatments for small populations turned out to be a hard business, and the company withdrew from the European market and was eventually taken private.
bluebird bio developed lentiviral gene-addition therapies including Zynteglo (beta thalassemia), Lyfgenia (sickle cell disease) and Skysona (cerebral adrenoleukodystrophy). Despite approvals, commercial difficulties led to withdrawal from the European market and, in 2025, acquisition and take-private. Its history is the field's clearest illustration that regulatory success and commercial viability are separate problems.
Not investment advice
This profile is educational information compiled from public disclosures. It is not a recommendation to buy, sell or hold any security, and it is not a view on the company's prospects. Biotechnology is highly speculative and most clinical programmes fail.
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Written by The CRISPR Atlas editorial teamLast updated Aug 25, 2026
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