Declaration of interest
S Oliva has received honoraria from Takeda and Celgene. A Palumbo has received honoraria, consultancy fees and Research funding from Amgen, Novartis, Bristo Meyers Squibb, Genmab, Celgene, Janssen-Cilag, Takeda, Sanofi and Merk. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.