(Left) Before Victoria can go home to Mississippi, she waits for another procedure to remove a port in her chest. (Right) She is on a regimen of medications as part of her follow-up care. Frangoul will monitor Gray for years to determine whether there are any side effects from the CRISPR treatment.

(Left) Before Victoria can go home to Mississippi, she waits for another procedure to remove a port in her chest. (Right) She is on a regimen of medications as part of her follow-up care. Frangoul will monitor Gray for years to determine whether there are any side effects from the CRISPR treatment.