1. Laboratory of Chromatin and Gene Regulation during Development, Imagine Institute, INSERM Unité Mixte de Recherche (UMR)1163, Paris, France;
2. Paris Descartes, Sorbonne Paris Cité University, Imagine Institute, Paris, France;
3. Genethon, INSERM UMR951, Evry, France;
4. Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy;
5. Laboratory of Human Lymphohematopoiesis, INSERM UMR1163, Paris, France;
6. Biotherapy Department, Necker Children’s Hospital, Public Assistance Hospitals of Paris, Paris, France;
7. Sorbonne Paris Cité University, Paris Diderot University, INSERM, Institut National de la Transfusion Sanguine, Unité Biologie Intégrée du Globule Rouge, Laboratoire d’Excellence GR-Ex, Paris, France;
8. RIKEN Tsukuba Branch, Ibaraki, Japan;
9. CRISPR Therapeutics, Cambridge, MA;
10. Department of Pediatrics, Stanford University, Stanford, CA; and
11. Biotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Public Assistance Hospitals of Paris, Paris, France