| Recruiting | 3 | 200 | Europe, Canada, Japan, US, RoW | PTC923, Sepiapterin | PTC Therapeutics | Phenylketonuria | 04/26 | 04/26 | | |
NCT03758521: Natural History Study of Patients with Succinic Semialdehyde Dehydrogenase (SSADH) Deficiency |
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| Active, not recruiting | N/A | 55 | Europe, US | Transcranial magnetic stimulation (TMS), Nexstim Navigated Brain Stimulation (NBS) System 4, Magnetic resonance imaging (MRI), Electroencephalogram (EEG), Natus, Bio-specimen Collection | Boston Children's Hospital, Washington State University, University of South Florida, University Hospital Heidelberg, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) | Succinic Semialdehyde Dehydrogenase Deficiency | 05/29 | 06/29 | | |
