Acknowledgements
The authors thank all co-workers at the MLL Munich Leukemia Laboratory for approaching together many aspects in the field of leukemia diagnostics and research by their dedicated work, as well as all physicians for providing samples and caring for patients as well as collecting data.
Disclosure statement
CH, WK and TH declare part ownership of Munich Leukemia Laboratory (MLL). SB, WW, MM, CB, MLM, AS are employed by the MLL.
Author contributions
SB and CH designed the study, CH, SB and AS interpreted the data, SB and AS wrote the manuscript. IS, AS and CH were responsible for chromosome banding and FISH analyses, WW, MM and CB for molecular and bioinformatic analyses, WK and MLM for immunophenotyping and TH for cytomorphologic analyses. All authors read and contributed to the final version of the manuscript.