D.J.B. declares a consulting or advisory role at Astellas, Eisai and Seagen; speakers’ bureau at Merck; and travel and accommodations from Merck. A.R.K. declares stock and other ownership interests from ECOM Medical; a consulting or advisory role from Exelixis, AstraZeneca, Bayer, Pfizer, Novartis, Genentech, Bristol Myers Squibb, EMD Serono, Immunomedics and Gilead Sciences; speakers’ bureau at Janssen, Astellas Medivation, Pfizer, Novartis, Sanofi, Genentech/Roche, Eisai, AstraZeneca, Bristol Myers Squibb, Amgen, Exelixis, EMD Serono, Merck, Seattle Genetics/Astellas, Myovant Sciences, Gilead Sciences and AVEO; research funding from Genentech, Exelixis, Janssen, AstraZeneca, Bayer, Bristol Myers Squibb, Eisai, Macrogenics, Astellas Pharma, BeyondSpring Pharmaceuticals, BioClin Therapeutics, Clovis Oncology, Bavarian Nordic, Seattle Genetics, Immunomedics and Epizyme; and travel, accommodations and/or expenses from Genentech, Prometheus, Astellas Medivation, Janssen, Eisai, Bayer, Pfizer, Novartis, Exelixis and AstraZeneca. O.Y. declares no competing interests.