AdvertisementA Patient Hopes Gene-Editing Can Help With Pain Of Sickle Cell Disease06:45Download AudioResumeOctober 10, 2019Rob SteinfacebookEmailAlthough Gray will finally go home to Forest, Miss., she will return to Nashville once a month for four months to undergo blood tests and a bone marrow biopsy. But, she says, the hardest part is over. (Meredith Rizzo/NPR)