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In 2023, the first drug making use of CRISPR gene editing, Casgevy, was approved for use in the United Kingdom to cure sickle-cell disease and beta thalassemia. [13] [14] Casgevy was approved for use in the United States on December 8, 2023, by the Food and Drug Administration. [15]
A sickle allele is always the same mutation of the beta-globin gene (glutamic acid to valine at amino acid six). In contrast, beta-thalassemia alleles can be created by many different mutations including both deletion and non-deletion forms.
[92] [93] The risks and benefits related to gene therapy for sickle cell disease are not known. [93] Gene therapy has been used in the eye. The eye is especially suitable for adeno-associated virus vectors. Voretigene neparvovec is an approved gene therapy to treat Leber's hereditary optic neuropathy.
The best known hemoglobinopathy is sickle-cell disease, which was the first human disease whose mechanism was understood at the molecular level. A mostly separate set of diseases called thalassemias involves underproduction of normal and sometimes abnormal hemoglobins, through problems and mutations in globin gene regulation .
Victoria Gray was the first patient ever to be treated with the gene-editing tool CRISPR for sickle-cell disease. [1]This marked the initial indication that a cure is attainable for individuals born with sickle-cell disease and another severe blood disorder, beta-thalassemia.
"Sickle Cell Anemia, a Molecular Disease" is a 1949 scientific paper by Linus Pauling, Harvey A. Itano, Seymour J. Singer and Ibert C. Wells that established sickle-cell anemia as a genetic disease in which affected individuals have a different form of the metalloprotein hemoglobin in their blood.
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