2.1
Exagamglogene autotemcel (Casgevy, Vertex) is indicated for 'the treatment of sickle cell disease in patients 12 years of age and older with recurrent vaso-occlusive crises who have the βS/βS, βS/β+ or βS/β0 genotype, for whom haematopoietic stem cell transplantation is appropriate and a human leukocyte antigen-matched related haematopoietic stem cell donor is not available'.