Complex t(8;13;21)(q22;q14;q22)--a novel variant of t(8;21) in a patient with acute myeloid leukemia (AML-M2)

Arch Med Res. 2008 Feb;39(2):252-6. doi: 10.1016/j.arcmed.2007.09.002. Epub 2007 Nov 19.

Abstract

Variants of the t(8;21)(q22;q22) involving chromosome 8, 21, and other chromosomes account for about 3% of all t(8;21)(q22;q22) in acute myeloid leukemia (AML) patients. We report a case of AML-M2 with t(8;13;21)(q22;q14;q22), not reported earlier. Using a dual-color fluorescence in situ hybridization (FISH) analysis with ETO and AML1 probes, we demonstrate an ETO/AML1 fusion signal on the derivative chromosome 8. Whole chromosome painting probes were used for chromosomes 8 and 13, to demonstrate the three-way translocation t(8;13;21)(q22;q14;q22). Involvement of chromosome region 13q14 has never been reported earlier, although region 13q12 as a variant in AML with t(8;21) has been reported earlier. The possible role of genes in this region in leukemogenesis, its response to the treatment and its clinical implications are discussed.

MeSH terms

  • Adult
  • Chromosomes, Human, Pair 13 / genetics*
  • Chromosomes, Human, Pair 21 / genetics*
  • Chromosomes, Human, Pair 8 / genetics*
  • Core Binding Factor Alpha 2 Subunit / genetics
  • DNA-Binding Proteins / genetics
  • Humans
  • In Situ Hybridization, Fluorescence
  • Leukemia, Myeloid, Acute / genetics*
  • Leukemia, Myeloid, Acute / pathology
  • Male
  • Oman
  • Oncogene Proteins, Fusion / genetics
  • Proto-Oncogene Proteins / genetics
  • RUNX1 Translocation Partner 1 Protein
  • Transcription Factors / genetics
  • Translocation, Genetic*

Substances

  • Core Binding Factor Alpha 2 Subunit
  • DNA-Binding Proteins
  • Oncogene Proteins, Fusion
  • Proto-Oncogene Proteins
  • RUNX1 Translocation Partner 1 Protein
  • RUNX1 protein, human
  • RUNX1T1 protein, human
  • Transcription Factors