Durable Correction of Phenylketonuria In Vivo Following a Single Intravenous Dose of AAVHSC15 Packaging a Human Phenylalanine Hydroxylase Transgene Durable Correction of Phenylketonuria In Vivo Following a Single Intravenous Dose of AAVHSC15 Packaging a Human Phenylalanine Hydroxylase Transgene Ahmed S, Ellsworth JL, Francone O, et al.