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Blood, 2 April 2009, Vol. 113, No. 14, pp. 3375-3382.
Prepublished online as a Blood First Edition Paper on December 8, 2008; DOI 10.1182/blood-2008-07-167379.
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Submitted July 18, 2008
Accepted November 25, 2008
Non-myeloablative allografting for newly diagnosed multiple myeloma: the experience of the Gruppo Italiano Trapianti di Midollo
Benedetto Bruno*, Marcello Rotta, Francesca Patriarca, Daniele Mattei, Bernardino Allione, Fabrizio Carnevale-Schianca, Roberto Sorasio, Alessandro Rambaldi, Marco Casini, Matteo Parma, Pasqua Bavaro, Francesco Onida, Alessandro Busca, Luca Castagna, Edoardo Benedetti, Anna Paola Iori, Luisa Giaccone, Antonio Palumbo, Paolo Corradini, Renato Fanin, David Maloney, Rainer Storb, Ileana Baldi, Umberto Ricardi, and Mario Boccadoro
Division of Hematology, S. Giovanni Battista Hospital, University of Torino, Torino, Italy
Division of Hematology, Department of Clinical and Morphological Researches, University of Udine, Udine, Italy
Division of Hematology, S. Croce e Carle Hospital, Cuneo, Italy
Division of Hematology, SS. Antonio e Biagio Hospital, Alessandria, Italy
Division of Oncology, IRCC, Candiolo, Italy
Division of Hematology, Ospedali Riuniti, Bergamo, Italy
Division of Hematology, Regional Hospital, Bolzano, Italy
Division of Hematology, S. Gerardo Hospital, University of Milano, Bicocca, Monza, Italy
Division of Hematology, Ospedale Civile, Pescara, Italy
Division of Hematology, Fondazione IRCCS Ospedale Maggiore Policlinico, Mangiagalli e Regina Elena, Milano, Italy
Division of Hematology, S. Giovanni Battista Hospital, Torino, Italy
Department of Medical Oncology and Hematology, Istituto Clinico Humanitas, Rozzano, Italy
Division of Hematology, S. Chiara Hospital, University of Pisa, Pisa, Italy
Division of Hematology, University La Sapienza, Roma, Italy
Division of Hematology, Istituto Nazionale Tumori, University of Milano, Milano, Italy
Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, United States
Unita di Epidemiologia dei Tumori, S.G.B. Hospital and CPO Piemonte, Torino, Italy
Radiation Oncology Unit, S. Giovanni Battista Hospital, University of Torino, Torino, Italy
* Corresponding author; email: benedetto.bruno{at}unito.it.
Despite recent advances, allografting remains the only potential cure for myeloma. From July 1999 to June 2005, 100 newly diagnosed patients younger than 65 years were enrolled in a prospective multi-center study. First-line treatment included vincristin, adriamycin and dexamethasone (VAD)-based induction chemotherapy, a cytoreductive autograft (melphalan 200 mg/m2) followed by a single dose of non-myeloablative total body irradiation and allografting from an HLA-identical sibling. Primary endpoints were overall (OS) and event-free (EFS) survivals from diagnosis. After a median follow up of 5 years, OS was not reached and EFS was 37 months. Incidences of acute and chronic graft-vs.-host disease (GHVD) were 38% and 50%, respectively. Complete remission (CR) was achieved in 53% of patients. Profound cytoreduction (CR or very good partial remission) prior to allografting was associated with achievement of post-transplant CR (HR 2.20, p=0.03) and longer EFS (HR 0.33, p<0.01). Conversely, development of chronic GVHD was not correlated with CR or response duration. This tandem transplant approach allows prolonged survival and long-term disease control in patients with reduced tumor burden at the time of allografting. We are currently investigating the role of "new drugs" in intensifying pre-transplant cytoreduction and post-transplant graft-vs.-myeloma effects to further improve clinical outcomes. (ClinicalTrials.gov, NCT-00702247)

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