Tandem Auto Stem Cell Transplant With Melphalan Followed by Melphalan and Bortezomib in Patients With Multiple Myeloma

Many patients with multiple myeloma receive 2 stem cell transplantations within a few months
of each other as part of their treatment. Usually the drug Melphalan is used for both
transplants.

Bortezomib is a drug that is used for treating multiple myeloma and has been used in
combination with melphalan for stem cell transplantation for patients with multiple myeloma.

The purpose of this trial is to study the effects of doing 2 transplants, first using
melphalan and second using melphalan and bortezomib. The trial is aiming to find out if
adding the Bortezomib to the second transplant will increase the chances of staying in
remission longer.

Changed from: Inclusion Criteria:

- Confirmed diagnosis of multiple myeloma with either Durie-Salmon stage I, II, or III
or ISS stage I, II or III, less than 12 months since initiation of systemic therapy

- ≥8x106 CD34+cells/kg available in cryopreservation in aliquots appropriate for tandem
transplants

- Age: 18-75 years at time of transplantation

- KPS 70-100%

- Recovery from complications of prior therapies

- Gender: There is no gender restriction

Exclusion Criteria:

- Diagnosis other than multiple myeloma

- Chemotherapy or radiotherapy within 8 days of initiating treatment in this study

- Prior autologous or allogeneic transplantation (except as enrolled into this study)

- Uncontrolled bacterial, viral, fungal or parasitic infections