In the submitted study the authors summarize experience with the treatment of resistant forms of multiple myeloma by a combination of Mitoxantrone, Vincristine and Prednisone (NOP regime). The above treatment produced an objective therapeutic response in 33% of the patients, in 50% a partial response, in 17% it failed. The median of survival in the whole group was 10.5 months. Substantially poorer therapeutic results were recorded in patients with primary resistance to the initial chemotherapy (objective response only in one of 6 patients) than in the group with secondary resistance which developed during a relapse of the disease (objective response in 3 of 6 patients). With the exception of marked leukopenia and neutropenia treatment by the NOP regime was very well tolerated. The NOP regime is an expedient approach which extends practical possibilities, in particular ambulatory treatment of refractory forms of multiple myeloma.

Keywords: Adult; Aged; Antineoplastic Combined Chemotherapy Protocols /therapeutic use/; Drug Resistance; Female; Humans; Male; Middle Aged; Mitoxantrone /administration & dosage/; Multiple Myeloma /drug therapy/; Prednisone /administration & dosage/; Vincristine /administration & dosage/