Acknowledgements
The study was supported by BeiGene, which was not involved in the study design or analysis; the study sponsor was the University of Cologne. We thank the patients and their families for participating in the trial and their trust in our work. We are grateful to the physicians, study nurses and study teams for supporting the conduct of the RT1 trial. We thank especially the GCLLSG central office team of S. Frohs, H. Gerwin, E. Holmes, O. Korf, V. Lipinsky, L. Miesen and M. Schüler-Aparicio. The study was also supported in part by the Deutsche Forschungsgemeinschaft (German Research Foundation), project no. 467697427 (O.A.S.), SFB 1530 project C04 (K.F.), SFB 1530 project Z01/B01 (M.H.), SFB 1530 project C05 (B.E. and B.C.) and SFB 1074 subproject B1 and B2 (E.T., C.S. and S.S.).