Acknowledgements
Media
The study was supported by Celgene, Bristol Myers Squibb, and 2Seventy Bio (previously bluebird bio). The authors thank the study patients and their families and the clinical study teams. Writing and editorial assistance were provided by P.J. Simon of MediTech Media and A.L. Loeb and R. Beck Jr of SciMentum, both of which are Nucleus Group Holdings and were funded by Bristol Myers Squibb. The authors directed the development of the manuscript and were fully responsible for all content and editorial decisions for this manuscript.