Tandem autotransplant as first-line consolidative treatment in poor-risk aggressive lymphoma: a pilot study of 36 patients

C Haioun, N Mounier, B Quesnel, P Morel, C Rieux, F Beaujean, J P Marolleau, K Belhadj, D Simon, P H Gaulard, E Lepage, C H Gisselbrecht, F Reyes
Annals of Oncology: Official Journal of the European Society for Medical Oncology 2001, 12 (12): 1749-55

PURPOSE: In the previous LNH87-2 study, consolidative high-dose therapy followed by stem cell transplantation (HDT) improved disease-free survival, as well as survival for patients (pts) presenting with two or three factors of the age-adjusted international prognostic index (Aa-IPI) in first complete remission (CR). In order to improve further the outcome of such patients, we conducted a pilot study of consolidative tandem autotranplant.

PATIENTS AND METHODS: Thirty-six patients (pts) under 60 years of age with two or three factors of the Aa-IPI were enrolled. Their main characteristics were: diffuse large B-cell lymphoma (83%), Aa-IPI three factors (50%), and marrow involved (36)%. The procedure consisted of 1) induction with four cycles of ACVBP (doxorubicin, cyclophosphamide, vindesine, bleomycin, prednisone) 2) in responding pts, peripheral blood stem cell (PBSC) collection after the fourth cycle of ACVBP (11 pts) or after an additional mobilization regimen (Cyclophosphamide-VP16) (17 pts) 3) a first HDT (mitoxantrone, cyclophosphamide, VP16 and carmustine) followed by PBSC infusion 4) a second HDT (busulfan, carboplatin and melphalan) followed by PBSC infusion. Among the 29 patients responding to induction, 28 received the first HDTand 24 the second.

RESULTS: The rates of three-year-event free survival and survival are 47% (95% confidence interval (95% CI: 31%-63%) and 50% (95% CI: 37%-69%), respectively. Eighteen patients remained free of evolutive disease and 18 patients have died, 15 from disease progression and three from treatment-related toxicity after tandem transplant (two veno-occlusive disease and one cerebral toxoplasmosis).

CONCLUSION: We conclude that tandem transplant did not improve the results of the LNH87-2 study in which patients received a single consolidative HDT.

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