Bortezomib as induction before autologous transplantation, followed by lenalidomide as consolidation-maintenance in untreated multiple myeloma patients

Antonio Palumbo, Francesca Gay, Patrizia Falco, Claudia Crippa, Vittorio Montefusco, Francesca Patriarca, Fausto Rossini, Simona Caltagirone, Giulia Benevolo, Norbert Pescosta, Tommasina Guglielmelli, Sara Bringhen, Massimo Offidani, Nicola Giuliani, Maria Teresa Petrucci, Pellegrino Musto, Anna Marina Liberati, Giuseppe Rossi, Paolo Corradini, Mario Boccadoro
Journal of Clinical Oncology 2010 February 10, 28 (5): 800-7
PURPOSE To evaluate the effect of bortezomib as induction therapy before autologous transplantation, followed by lenalidomide as consolidation-maintenance in myeloma patients. PATIENTS AND METHODS Newly diagnosed patients age 65 to 75 years were eligible. Induction (bortezomib, doxorubicin, and dexamethasone [PAD]) included four 21-day cycles of bortezomib (1.3 mg/m(2) on days 1, 4, 8, and 11), pegylated liposomal doxorubicin (30 mg/m(2) on day 4), and dexamethasone (40 mg/d; cycle 1: days 1 to 4, 8 to 11, and 15 to 18; cycles 2 to 4: days 1 to 4). Autologous transplantation was tandem melphalan 100 mg/m(2) (MEL100) and stem-cell support. Consolidation included four 28-day cycles of lenalidomide (25 mg/d on days 1 to 21 every 28 days) plus prednisone (50 mg every other day), followed by maintenance with lenalidomide (LP-L; 10 mg/d on days 1 to 21) until relapse. Primary end points were safety (incidence of grade 3 to 4 adverse events [AEs]) and efficacy (response rate). Results A total of 102 patients were enrolled. In a per-protocol analysis, after PAD, 58% of patients had very good partial response (VGPR) or better, including 13% with complete response (CR); after MEL100, 82% of patients had at least VGPR and 38% had CR; and after LP-L, 86% of patients had at least VGPR and 66% had CR. After median follow-up time of 21 months, the 2-year progression-free survival rate was 69%, and the 2-year overall survival rate was 86%. During induction, treatment-related mortality was 3%; grade 3 to 4 AEs included thrombocytopenia (17%), neutropenia (10%), peripheral neuropathy (16%), and pneumonia (10%). During consolidation-maintenance, grade 3 to 4 AEs were neutropenia (16%), thrombocytopenia (6%), pneumonia (5%), and cutaneous rash (4%). CONCLUSION Bortezomib as induction before autologous transplantation, followed by lenalidomide as consolidation-maintenance, is an effective regimen.

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