Sickle cell CRISPR success prompts new questions.

Victoria Gray, the first patient to be treated for sickle cell disease using CRISPR, an experimental gene-editing technique, shared her experiences at the Third International Summit on Human Genome Editing. Gray's symptoms are gone after receiving the treatment in 2019, which involved genetically modifying her bone marrow cells to produce fetal hemoglobin. The treatment has raised hopes for medical breakthroughs, but also ethical questions. Gray, who now works full time and enjoys travel, says the difference between her life before and after CRISPR is "night and day."