“…Next to the set-up of registries, several publications report that payers and developers face difficulties to select appropriate outcomes as decision-rule for payment adjustment based on treatment performance ( Breckenridge and Walley, 2008 ; Goldenberg and Bachman, 2012 ; Kocsis et al, 2015 ; Abou-El-Enein et al, 2016 ; Hettle et al, 2017 ; Holleman et al, 2017 ; Hanna et al, 2018 ; Pham and Carlson, 2018 ; Sandhu and Heidenreich, 2018 ; Jönsson et al, 2019 ; Mahendraratnam et al, 2019 ). Accessible and easily measurable outcomes in the short-term to medium-term which are clinically relevant, useful and important to all stakeholders are recommended ( Dankó et al, 2009 ; Kiernan, 2016 ; Pouwels et al, 2016 ; Goble et al, 2017 ; Kazi et al, 2017 ; Yeung et al, 2017 ; Danzon, 2018 ; EXPH, 2018 ; Cole et al, 2019 ). A minimal core outcome set per disease could be built such as survival, disease progression, relapse or recurrence, long-term side effects and return to normal activities for oncological diseases as proposed by Cole et al ( Cole et al, 2019 ) or disease progression, unacceptable toxicity not allowing continuation of treatment and toxicity-related death as used by the national health service in Italy ( Garattini and Casadei, 2011 ).…”