Treatment of chronic lymphocytic leukemia and lymphosarcoma with a new chlorambucil ester of prednisolone (Leo 1031) (NSC-134087).

A new chlorambucil ester of prednisolone (LEO 1031) has been evaluated in patients with advanced lymphocytic lymphosarcoma and chronic lymphocytic leukemia. All 11 patients had been previously treated with radiotherapy and/or combination chemotherapy. Three complete remissions and one partial remission were seen in 4/7 lymphocytic lymphosarcoma patients treated with LEO 1031. In the chronic lymphocytic leukemia group, 3/4 have had benefit. This new drug is considered worthy of further trial.