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Low-dose cytosine arabinoside regimen induced a complete remission with normal karyotypes in a case with hypoplastic acute myeloid leukaemia with No. 8-trisomy: in vitro and in vivo evidence for normal haematopoietic recovery.

Authors
  • Tagawa, M
  • Shibata, J
  • Tomonaga, M
  • Amenomori, T
  • Yoshida, Y
  • Kuriyama, K
  • Matsuo, T
  • Sadamori, N
  • Ichimaru, M
Type
Published Article
Journal
British journal of haematology
Publication Date
Jul 01, 1985
Volume
60
Issue
3
Pages
449–455
Identifiers
PMID: 3860248
Source
Medline
License
Unknown

Abstract

Complete remission was achieved in a case of hypoplastic acute myeloid leukaemia with chromosomal aberration of No. 8-trisomy by giving very low dose of cytosine arabinoside (ara-C), 10 mg (7 X 5 mg/m2)/d, by 24 h continuous intravenous infusion for 20 d. We observed a definite cytoreduction phase in the bone marrow (BM) before normal haematopoiesis resumed. The remission BM showed only normal karyotypes in all metaphases examined. Granulocyte/macrophage colonies and erythroid bursts recovered sufficiently in numbers and cytogenetic study on single colonies and bursts revealed only normal karyotypes. These observations provide evidence that a low dose ara-C regimen can induce remission by cytoreduction which diverts the growth advantage from the leukaemic clone to the normal clones.

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