Note: Funding Information: Funding: this work was supported by funding from AIRC - Associazione Italiana Ricerca sul Cancro Investigator Research Grant (to MC), Fondazione Guido Berlucchi, Progetto di Ricerca 2014 (to CT), and Fondazione del Monte di Bologna/Ravenna. This project was co-funded thanks to a donation from Maria Grazia Zorzi and Gianpaolo Barison through BolognAIL ONLUS (Associazione Italiana contro le Leucemie, i Linfomi e il Mieloma - Section of Bologna). EB is the recipient of a grant from the Umberto Veronesi Foundation. Correspondence: michele.cavo@unibo.it doi:10.3324/haematol.2017.186924 Information on authorship, contributions, and financial & other disclosures was provided by the authors and is available with the online version of this article at www.haematologica.org.