## Abstract A series of 14 children with bone marrow or testicular recurrence of acute lymphoblastic leukemia (ALL) and treated with pulsed combined chemotherapy incorporating doxorubicin is reviewed. All had been previously adequately treated according to established leukemia protocols. Median dis
Methotrexate and asparaginase combination chemotherapy in refractory acute lymphoblastic leukemia of childhood
โ Scribed by Jeffrey S. Lobel; Richard T. O'Brien; Sue McIntosh; Gregg T. Aspnes; Robert L. Capizzi
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 526 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0008-543X
No coin nor oath required. For personal study only.
โฆ Synopsis
Two groups of children with refractory acute lymphoblastic leukemia were treated with a regimen of methotrexate (MTX) and asparaginase (Asn'ase) based on studies of the effect of MTX in vitro on human lymphoblasts exposed to Asn'ase. Induction therapy in 12 children produced 4 complete remissions, 3 partial remissions, and 5 failures. Responsiveness to Asn'ase seemed necessary for successful induction with the drug combinations. Maintenance therapy in 18 children produced a median hematologic remission of 31 weeks (range 3-85 weeks). During remission, 2 children developed central nervous system leukemia and 2 died of infection. The mean maximally tolerated dose of MTX was 361 mg/m2. The results of this trial suggest therapeutic synergy in maintenance therapy and the capability of Asn'ase to attenuate MTX toxicity.
๐ SIMILAR VOLUMES
BACKGROUND. L-asparaginase in combination with methotrexate has synergistic antileukemic activity in a schedule-dependent fashion. A new preparation of L-asparaginase, polyethylene-glycol conjugated (PEG)-asparaginase, is a pharmacologically different formulation of L-asparaginase with distinct prop