[1] Dana Farber Canc Inst, LeBow Inst Myeloma Therapeut, Boston, MA 02115 USA
[2] Dana Farber Canc Inst, Jerome Lipper Ctr Multiple Myeloma Res, Boston, MA 02115 USA
[3] Genmab BV, Utrecht, Netherlands
[4] Harvard Univ, Sch Med, Dana Farber Canc Inst, Boston, MA 02115 USA
[5] VA Boston Healthcare Syst, Dana Farber Canc Inst, Boston, MA USA