1Department of Pediatric Oncology/Hematology, Charité-Universitätsmedizin Berlin, Berlin, Germany.

2Berlin Institute of Health, Berlin, Germany.

3German Cancer Consortium (DKTK), partner site Berlin, and German Cancer Research Center (DKFZ), Heidelberg, Germany.

4Experimental and Clinical Research Center (ECRC) of the MDC and Charité Berlin, Berlin, Germany.