Carfilzomib + High Dose Melphalan as Preparative Regimen for Autologous Hematopoietic Stem Cell Transplantation

Subjects will receive the appropriate dose of carfilzomib (according to assigned cohort in phase 1 and at the determined MTD in phase 2) on days -3 and -2. Carfilzomib will be infused over 30 minutes. Prophylaxis of chemotherapy induced nausea and vomiting will follow institutional guidelines and SOPs.

Subjects will receive 200 mg/m2 of intravenous melphalan on Day -2. Administered as an intravenous push or a fast infusion according to institutional standard operating procedure (SOP). Prophylaxis of chemotherapy induced nausea and vomiting will follow institutional guidelines and SOPs.