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Sequential Bortezomib, Dexamethasone, and Thalidomide Maintenance Therapy after Single Autologous Peripheral Stem Cell Transplantation in Patients with Multiple Myeloma

Sahebi F, et al.

Biol Blood Marrow Transplant. 2012 Mar;18(3):486-92. Epub 2011 Dec 22


We report feasibility and response results of a phase II study investigating prolonged weekly bortezomib and dexamethasone followed bythalidomide and dexamethasone as maintenance therapy after single autologous stem cell transplantation (ASCT) in patients with multiplemyeloma. Within 4 to 8 weeks of ASCT, patients received weekly bortezomib and dexamethasone for six cycles, followed by thalidomideand dexamethasone for six more cycles. Thalidomide alone was continued until disease progression. Forty-five patients underwent ASCT. Forty patients started maintenance therapy; of these, 36 patients received four cycles, and 32 completed six cycles of maintenancebortezomib. Of these 40 patients, nine (22%) were in complete response (CR) before ASCT, 13 (32%) achieved CR after ASCT but beforebortezomib maintenance therapy, and 21 (53%) achieved CR after bortezomib maintenance therapy. Nine patients not previously in CR (33%) upgraded their response to CR with bortezomib maintenance. At 1 year post-ASCT, 20 patients achieved CR, and two achieved very good partial response. Twenty-seven patients experienced peripheral neuropathy during bortezomib therapy, all grade 1 or 2. Our findings indicate that prolonged sequential weekly bortezomib, dexamethasone, and thalidomide maintenance therapy after single ASCT is feasible and well tolerated. Bortezomib maintenance treatment upgraded post-ASCT CR responses with no severe grade 3/4 peripheral neuropathy.

Copyright © 2012 American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved.


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