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Ggfd8675 t1_ivvh5to wrote

She still has the mutation. They didn’t do anything to alter her genes. The breakthrough here was being able to administer the missing enzyme to her in utero. Previously, they’ve given this enzyme treatment soon after birth, when much damage was already done during fetal development. She will receive the treatment for the rest of her life, unless they invent a new therapy.

The actual paper is paywalled, so I’m going off of the linked reporting.