High dose chemotherapy with autologous stem cell transplant has resulted in improved overall survival and is currently considered an effective first line therapy applicable to the majority of patients with multiple myeloma. However disease relapse is inevitable and remains the primary cause of mortality in this cohort.~The purpose of this study is to estimate the proportion of subjects with plasma cell contamination of harvested stem cell product in standard and treatment arms. The study will explore whether or not in-vivo purging of malignant tumor plasma cells will improve progression free survival (PFS) for patients.~The study will consist of two groups:~Group A: Standard of Care (SOC) stem cell collection without in-vivo purging with bortezomib. Granulocyte colony-stimulating factor (G-CSF) and Mozobil used if needed.~Group B: Bortezomib 1.3mg/m^2 will be given subcutaneously (SQ) on days -11 and -8 followed by Granulocyte colony-stimulating factor (G-CSF) on days -4 through -1 prior to stem cell harvest (day 0).
Explore stem cell collection with or without bortezomib with in-vivo purging in multiple myeloma.