Conflict of interest statement: Conflict-of-interest disclosure: M.S. provides 
consultancy for Abbvie, Genentech, and Sound Biologics; is on the advisory board 
for Abbvie, Genentech, and Verastem; and receives research funding from Mustang 
Biopharma, Pharmacyclics, Gilead, Genentech, TG Therapeutics, Bigene, Acerta, 
Emergent, and Merck. A.K.G. reports grants and nonfinancial support from Teva, 
Bristol-Myers Squibb, Merck, Takeda, TG Therapeutics, and Effector; grants, 
personal fees, and nonfinancial support from Seattle Genetics, Pfizer, Janssen, 
Gilead, Spectrum, and Incyte; and personal fees from Aptevo, BRIM Bio, Seattle 
Genetics, and Sanofi. V.A.C. declares no competing financial interests.