1. Department of Internal Medicine III, Klinikum der Universität München, Munich, Germany;
2. Clinical Cooperation Group Immunotherapy at the Helmholtz Institute Munich, Munich, Germany;
3. Institute for Immunology, Ludwig-Maximilians-University, Munich, Germany;
4. AMGEN Research (Munich) GmbH, Munich, Germany;
5. Division of Clinical Pharmacology, Department of Internal Medicine IV, Klinikum der Universität München, Munich, Germany;
6. Clinical Cooperation Group Leukemia at the Helmholtz Institute Munich, Munich, Germany;
7. German Cancer Consortium (DKTK), Heidelberg, Germany; and
8. German Cancer Research Center (DKFZ), Heidelberg, Germany