FILE – In this Monday, Nov. 13, 2017 file photo, Brian Madeux, starts to receive the first human gene editing therapy for Hunter syndrome, as his girlfriend, Marcie Humphrey, left, applauds at the UCSF Benioff Children’s Hospital in Oakland, Calif. At right is nurse practitioner Jacqueline Madden. On Thursday, Feb. 7, 2019, scientists gave an update on the first effort to edit genes, or permanently change the DNA, of about a dozen adults, including Madeux,

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