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Methotrexate-related neurotoxicity in the treatment of childhood acute lymphoblastic leukemia.

Abstract
The addition of methotrexate to treatment protocols in children with acute lymphoblastic leukemia has been found beneficial in preventing central nervous system relapse. However, MTX itself may be associated with neurologic morbidities, the most significant of which is leukoencephalopathy. The present study describes the clinical spectrum of leukoencephalopathy, which ranges from a subclinical disease manifested only radiologically to a progressive, devastating encephalopathy. The interaction of MTX with other components of the treatment protocol is discussed, as is the effect of leucovorin. A summary is presented of the metabolic pathways that may be involved in the development of MTX toxicity. Researchers are still seeking a biochemical marker to aid in the determination of the amount of MTX that may be safely administered.
AuthorsAvinoam Shuper, Batia Stark, Liora Kornreich, Ian J Cohen, Gali Avrahami, Isaac Yaniv
JournalThe Israel Medical Association journal : IMAJ (Isr Med Assoc J) Vol. 4 Issue 11 Pg. 1050-3 (Nov 2002) ISSN: 1565-1088 [Print] Israel
PMID12489505 (Publication Type: Journal Article, Review)
Chemical References
  • Antimetabolites, Antineoplastic
  • Tetrahydrofolate Dehydrogenase
  • Leucovorin
  • Methotrexate
Topics
  • Antimetabolites, Antineoplastic (adverse effects, metabolism, therapeutic use)
  • Child
  • Drug Interactions
  • Humans
  • Leucovorin (therapeutic use)
  • Methotrexate (adverse effects, metabolism, therapeutic use)
  • Neurotoxicity Syndromes (etiology)
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma (drug therapy)
  • Tetrahydrofolate Dehydrogenase (drug effects)

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