C Dietrich has no conflict of interest to declare. M Salzmann has received honoraria and/or travel grants from Abbvie, Bristol-Myers Squibb (BMS), Merck, Merck Sharp & Dohme (MSD), Novartis and Pfizer. A Steinbrecher has received speakers honoraria from Bayer, Biogen, Daiichi Sankyo, Merck-Serono, Roche and Sanofi. R Herbst served as consultant or/and has received speakers honoraria from Bristol-Myers Squibb (BMS), Merck Sharp & Dohme (MSD), Novartis, Pierre Fabre, Roche and Sun pharma. JC Hassel has received honoraria for talks from BMS, MSD, Roche, Novartis; is an advisory board member for MSD, Pierre Fabre; has received scientific grant support from BMS and travel grants from BMS, Pierre Fabre. 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. This research did not receive external funding.

No writing assistance was utilized in the production of this manuscript.