Can t(8;21) oligoblastic leukemia be called a myelodysplastic syndrome?

Kinuyo Kaneda, Kensuke Kojima, Makoto Takeuchi, Hidetaka Takimoto, Seiji Takaba, Katsuji Shinagawa, Hajime Kobayashi, Akira Miyata, Masamichi Hara, Mitsune Tanimoto

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The new World Health Organization (WHO) classification of hematologic malignancies has incorporated t(8;21) myelodysplastic syndromes (MDS) according to the French-American-British classification into the category of acute myeloid leukemia (AML) with t(8;21)(q22;q22), while our knowledge about clinicopathological features of t(8;21) oligoblastic leukemia is still limited. We present our experience with 12 patients meeting the FAB diagnostic criteria of MDS and having t(8;21), who were compared to 43 t(8;21) AML patients. The MDS and AML patients shared most hematomorphologic, immunophenotypic, and clinical features, whereas the differences lay along myeloid maturation. The MDS patients had higher percentages of circulating neutrophils and marrow myeloid cells beyond promyelocytes than the AML patients. The incidence of Auer rods in mature neutrophils in MDS was significantly higher than that in AML, and furthermore, the neutrophils in MDS more commonly contain t(8;21) than in AML. Our findings support the rationale for the WHO classification, and future studies on large patient populations should help clarify whether the spontaneous differentiation potential could be actively associated with a hematological manifestation of t(8;21) leukemias.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalEuropean Journal of Haematology
Issue number3
Publication statusPublished - Sept 1 2002
Externally publishedYes


  • Acute myeloid leukemia
  • Fluorescence in situ hybridization analysis
  • Myelodysplastic syndrome
  • Oligoblastic leukemia
  • Translocation (8;21)

ASJC Scopus subject areas

  • Hematology


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