Treatment of multiple myeloma: A randomized study of three different regimens
1985
Abstract The results of an Italian multicentric trial for treatment of symptomatic Multiple Myeloma (MM) are reported. One hundred and thirty-three previously untreated patients were singled out at random for three different chemotherapy schedules: Melphalan plus Prednisone (M.P.) × 6 monthly cycles; Vincristine plus Melphalan plus Cyclosphamide plus Prednisone (VMCP) × 6 monthly cycles; Peptichemio, Cyclophosphamide, BCNU. Drugs in this latter schedule were administered sequentially, for a period of six months. Criteria for response, progression and relapse were those of the Southwestern Oncology Group. Fifteen patients in MP chemotherapy (35%) and 20 patients in VCMP chemotherapy (46%) achieved an objective response (decrease of at least 50% in the synthesis index of Monoclonal Component (M.C.)), while only 3 out of the other 21 patients assigned to the third schedule responded to treatment. No significant differences were noted in the survival curves in either of the three treatment groups. The 38 responding patients did not receive maintenance therapy; no significant difference was found in remission duration between patients in MP and VCMP arms, with a median duration of 16 months for the whole group. No statistical difference was observed between survival and remission curves of patients with a ‘response’ (M. spike reduction > 75%) and those with ‘improvement’ (M. spike reduction between 75 and 50%). The authors conclude that the inclusion of Vintristine in a combination chemotherapy does not produce clear survival benefits; a longer induction period (12 cycles) could allow a better differentiation between MP and VMCP regimens.
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