[Late phase II study of MST-16 (sobuzoxane) on malignant lymphoma]

Late phase II trial of MST-16 for malignant lymphoma was conducted by the multi-institutions collaboration. Out of 34 patients entered, 29 were evaluated for efficacy as well as side effects. One complete response and 8 partial responses were achieved by the treatment of MST-16. The factors which affect the response rate were prior chemotherapies, stage of disease and performance status. The main toxicities were bone marrow suppression and G-I disorders. Leukopenia was observed in 72.4% of patients, thrombocytopenia in 44.8% and nausea/vomiting in 31.0%. Patients recovered from these side effects by discontinuation of the MST-16 therapy.