Two CRISPR strategies for curing sickle cell disease and beta-thalassemia have been reported to dramatically improve the health of a handful of people that had these genetic diseases. The picture below shows Victoria Gray (right), was the first patient to be treated with the gene-editing tool CRISPR for sickle cell disease. Read more in Science.

https://www.sciencemag.org/news/2020/12/crispr-and-another-genetic-strategy-fix-cell-defects-two-common-blood-disorders