Vertex looks on course to gain approval for its sickle cell disease gene therapy exagamglogene autotemcel (exa-cel) by the end of this year, with the US Food and Drug Administration having confirmed it will make its decision by 8 December. Its chief rival, bluebird bio, is not far behind with its candidates, however.
Vertex is also seeking the therapy’s approval as a treatment for transfusion-dependent beta thalassemia (TDT), but the US regulator has...







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