Study of Combination POM, BTZ, Low-Dose DEX, and DARA (PVD-DARA) in Patients With RRMM

"Daratumumab (and hyaluronidase) will be given over 3-5 minutes subcutaneously (under the skin) in the clinic at alternating left/right abdominal sites. Patient will take dexamethasone orally (by mouth) either before coming to clinic or in clinic, before other medications.~Only for the first cycle, patient will receive on Day 1 daratumumab (which is mixed with a compound called hyaluronidase) and dexamethasone, 1 day before patient start the other 2 medications."

On day 2 of cycle 1, patient will start the other medications and will therefore receive bortezomib administered subcutaneously (SC) over 3-5 minutes and dexamethasone given orally (by mouth), either before coming to clinic or in clinic, before bortezomib. Patient will also start pomalidomide on the same day, which patient will take that evening at home and every evening for 21 days.