Received: 8 August 2019
Accepted: 15 April 2020
First Online: 25 April 2020
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki and approved by the Institutional Review Board (Ethic’s committee of the University of Heidelberg, S337/2009, S096/2017). Written informed consent for study participation was obtained from all patients.
: The first author and all coauthors confirm that there are no potential conflicts of interest to disclose, except the following: Sandra Sauer: travel grants or honoraria for presentations for Celgene, BMS, Janssen, Takeda and Amgen. Patrick Wuchter: served on advisory boards for Sanofi. Carsten Müller-Tidow: research support and support for clinical trials from multiple pharmaceutical companies. Katharina Kriegsmann: research support from BMS, Celgene, Sanofi, Morphosys.