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t(3;21)(q26;q22) with AML1 rearrangement in a de novo childhood acute monoblastic leukaemia

  • Bertil Johansson
  • Thoas Fioretos
  • Stanislaw Garwicz
  • Sverre Heim
  • Felix Mitelman
Publishing year: 1996
Language: English
Pages: 429-431
Publication/Series: British Journal of Haematology
Volume: 92
Issue: 2
Document type: Journal article
Publisher: Federation of European Neuroscience Societies and Blackwell Publishing Ltd

Abstract english

T(3;21)(q26;q22) is a recurrent chromosomal abnormality in Philadelphia-positive chronic myeloid leukaemia in blast crisis and in treatment-related myelodysplastic syndrome and acute myeloid leukaemia. The molecular consequences of the t(3;21) are presently being unravelled; various transcripts between the AML1 gene in 21q22 and several unrelated genes, i.e. EAP, EVI1 and MDS1, in 3q26 are generated, resulting in the formation of a chimaeric transcription factor. The t(3;21) has only rarely been described in de novo leukaemias and never before in an acute leukaemia in a child. We here present the clinical, cytogenetic and molecular genetic findings in a boy with a de novo acute monoblastic leukaemia with t(3;21)(q26;q22) and AML1 rearrangement.


  • Hematology
  • childhood
  • acute leukaemia
  • translocation
  • AML1


  • ISSN: 0007-1048
Thoas Fioretos
E-mail: thoas.fioretos [at]

Principal investigator

Division of Clinical Genetics

+46 46 222 45 95

+46 70 334 33 67