| Completed | N/A | 339 | Europe | | Great Ormond Street Hospital for Children NHS Foundation Trust, Newcastle-upon-Tyne Hospitals NHS Trust, Leiden University Medical Center, Stichting Kempenhaeghe, Region Hovedstadens Apotek, Institut Necker Enfants Malades, Catholic University of the Sacred Heart, Università degli Studi di Ferrara, Universidad Complutense de Madrid | Duchenne Muscular Dystrophy, Becker Muscular Dystrophy | 06/24 | 06/24 | | |