In a landmark decision, the UK’s approved the use of a gene-editing therapy called for patients with sickle cell disease and beta thalassemia — both of which are hereditary disorders related to genetic mutations of the red blood cells. The treatment, , is the first-ever approved therapy that utilizes CRISPR-based gene editing technology to treat eligible patients.
The UK approval of the novel therapy is informed by two previous global clinical trials that indicated the treatment's efficacy. 97 percent of patients using Casgevy were relieved of severe pain associated with the blood disorders for at least 12 months after treatment during the trials. The results suggest that the gene editing treatment the current standard for care. are currently the only pathways to cure sickle cell disease and beta thalassemia, however, they involve a lot of risks.
Both and beta thalassemia are blood disorders characterized by defective red blood cells that can’t carry oxygen, and require patients to get monthly that can be costly and time-consuming. Casgevy works by specifically targeting the genes in the bone marrow stem cells that produce faulty blood cells. For the treatment to work, a patient’s stem cells need to be extracted from their bone marrow, edited in a lab and then re-infused into the patient.
#Breaking: The UK Medicines and Healthcare products Regulatory Agency (MHRA) approves our CRISPR/Cas9 gene-edited treatment for #SickleCellDisease and #BetaThalassemia in Great Britain—a historic scientific milestone. Learn more: pic.twitter.com/bMcVN5Ln5c
— Vertex Pharmaceuticals (@VertexPharma) November 16, 2023
Despite its promising outlook, CRISPR-based therapies may not be easily available to the general public. . The Innovative Genomics Institute (IGI) estimates that the average CRISPR-based therapy will cost between The IGI has built out an ‘Affordability Task Force’ to tackle the issue of expanding access to these novel therapies.
Aside from costliness, offer huge promise to for rare conditions including . More importantly, this landmark approval for Casgevy “opens the door for further applications of CRISPR therapies in the future,” Prof Dame Kay Davies, a scientist from the University of Oxford, . may even surpass CRISPR in the future.
Casgevy is still being reviewed by for safety standards in other countries, including the United States and Saudi Arabia. A marketing application, the first step towards approval for the therapy, was recently validated by the .
This article originally appeared on Engadget at