High-dose methylprednisolone sodium succinate as a single agent in relapsed childhood acute lymphoblastic leukaemia.

Twenty children received methylprednisolone (1 g/m2), daily for 5 to 8 days, as initial single agent therapy for relapsed acute lymphoblastic leukaemia. Bone marrow blasts were reduced to less than 5% in 2 and 5-10% in 3 of 12 patients with bone marrow relapses. In 3/9 with central nervous system relapses the cerebrospinal fluid (CSF) blasts completely cleared and were reduced in 4 others. In two patients with testicular relapses there was shrinkage of tumour and one patient with a navicular bone relapse became pain free. Toxicity was minimal. These results indicate high-dose methylprednisolone is an effective agent, particularly in the treatment of established central nervous system (CNS) disease and could contribute to early CNS directed therapy in acute lymphoblastic leukaemia.