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Originally published as JCO Early Release 10.1200/JCO.2007.14.4204 on May 19 2008 © 2008 American Society of Clinical Oncology. Rituximab Improves the Efficacy of High-Dose Chemotherapy With Autograft for High-Risk Follicular and Diffuse Large B-Cell Lymphoma: A Multicenter Gruppo Italiano Terapie Innnovative nei Linfomi Survey
From the Dipartimento Medicina-Oncologia Sperimentale, Divisione Universitaria di Ematologia, and Divisione Universitaria di Medicina Nucleare, Azienda Ospedaliera S. Giovanni B., Torino; Divisione Universitaria di Oncologia, Istituto Nazionale Tumori; Hematology Division and Bone Marrow Transplantation Unit, Istituto Scientifico H.S. Raffaele; and Divisione di Ematologia, Istituto Nazionale Tumori, Università di Milano, Milano; Dipartimento di Medicina Clinica e Sperimentale, Sezione e Divisione di Ematologia, Università e Azienda Ospedaliera di Verona, Verona; Divisione Ospedaliera Ematologia, Ospedali Riuniti di Bergamo, Bergamo; Divisione Ospedaliera di Ematologia, Azienda Ospedaliera V. Cervello, Palermo; Divisione di Ematologia, Azienda Ospedaliera S. Croce, Cuneo; Divisione di Ematologia, Azienda Ospedaliera S. Maurizio, Bolzano; and Divisione di Ematologia, Azienda Ospedaliera S. Camillo/Forlanini, Roma, Italy Corresponding author: Corrado Tarella, MD, Divisione Universitaria di Ematologia, Az. Osp. S. Giovanni Battista, Via Genova 3, 10126 Torino, Italy; e-mail: corrado.tarella{at}unito.it Purpose To investigate the impact of adding rituximab to intensive chemotherapy with peripheral-blood progenitor cell (PBPC) autograft for high-risk diffuse large B-cell lymphoma (DLB-CL) and follicular lymphoma (FL). Patients and Methods Data were collected from 10 centers associated with Gruppo Italiano Terapie Innnovative nei Linfomi for 522 patients with DLB-CL and 223 patients with FL (median age, 47 years) who received the original or a modified high-dose sequential (HDS) chemotherapy regimen. HDS was delivered to 396 patients without (R–) and to 349 patients with (R+) rituximab; 154 (39%) and 178 patients (51%) in the R– and R+ subsets, respectively, underwent HDS for relapsed/refractory disease. Results A total of 355 R– (90%) and 309 R+ patients (88%) completed the final PBPC autograft. Early treatment-related mortality was 3.3% for R– and 2.8% for R+ (P = not significant). Two parameters significantly influenced the outcome: disease status at HDS, with 5-year overall survival (OS) projections of 69% versus 57% for diagnosis versus refractory/relapsed status, respectively, and rituximab addition, with 5-year OS of 69% versus 60% in the R+ versus R– groups, respectively. In the multivariate analysis, these two variables maintained an independent prognostic value. The marked benefit of rituximab was evident in patients receiving HDS as salvage treatment: the 5-year OS projections for R+ versus R– were, respectively, 64% versus 38%, for patients with refractory disease or early relapse and 71% versus 57%, for patients with late relapse, partial response, or second/third relapse. Conclusion The results of this large series indicate that rituximab should be included in the current practice of PBPC autograft for DLB-CL and FL. published online ahead of print at www.jco.org on May 19, 2008. Supported in part by grants from the Ministero dellIstruzione, dellUniversità e della Ricerca; the Michelangelo Foundation for Advances in Cancer Research and Treatment; and the Piedmont Regional Government (Regione Piemonte). Authors disclosures of potential conflicts of interest and author contributions are found at the end of this article.
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Copyright © 2008 by the American Society of Clinical Oncology, Online ISSN: 1527-7755. Print ISSN: 0732-183X
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