If a participant continues on BV-CHEP, at the end of cycle 4, the participant will have another PET/CT scan. If the cancer has gotten better and the participant is eligible for a bone marrow transplant, he/she will have the transplant. If the participant is not eligible for a bone marrow transplant and the cancer has stayed the same or gotten better, the participant may continue on BV-CHEP for two more cycles (cycles 5 and 6).