1. From the Jerome Lipper Multiple Myeloma Center, Dana–Farber Cancer Institute (N.C.M.), the Veterans Affairs Boston Healthcare System, Harvard Medical School (N.C.M.), and Massachusetts General Hospital (N.R.), Boston, and bluebird bio, Cambridge (F.P., M.M.) — all in Massachusetts; Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas (L.D.A.); the University of California, San Francisco, San Francisco (N.S.); Icahn School of Medicine at Mount Sinai, New York (D.M....