Conflict-of-interest disclosure: A.J.Y. has been a consultant for AbbVie, Adaptive Biotechnologies, Amgen, Bristol Myers Squibb, Celgene, GlaxoSmithKline, Johnson & Johnson (Janssen), Karyopharm, Oncopeptides, Pfizer, Prothena, Regeneron, Sanofi, Sebia, and Takeda; and has received research funding to the institution from Amgen, Bristol Myers Squibb, GlaxoSmithKline, Johnson & Johnson (Janssen), and Sanofi. M.V.M. is an inventor on patents related to adoptive cell therapies, held by Massachusetts General Hospital (some licensed to ProMab and Luminary) and University of Pennsylvania (some licensed to Novartis); receives grant/research support from Kite Pharma, Moderna, and Sobi; holds equity in 2Seventy Bio, A2 Bio, AffyImmune, BendBio, Cargo, GBM newco, Model T bio, Neximmune, and Oncternal; serves on the board of directors for 2Seventy Bio; and is or has been a consultant for A2 Bio, Adaptimmune, AffyImmune, Bristol Myers Squibb, Cabaletta, Cargo, In8bio, GlaxoSmithKline, Kite Pharma, Neximmune, Novartis, Oncternal, and Sobi. M.J.F. has been a consultant for Kite, Bristol Myers Squibb, Johnson & Johnson/Legend, and Novartis. N.S.R. received research funding and/or consulting fees from AbbVie, Bristol Myers Squibb, Caribou, GlaxoSmithKline, Immuneel, Janssen, K36 Therapeutics, Pfizer, and Sanofi. The remaining authors declare no competing financial interests.