Jumping translocation of 1q in a BCR/ABL-positive acute lymphoblastic leukemia

Cancer Genet Cytogenet. 2005 Mar;157(2):157-9. doi: 10.1016/j.cancergencyto.2004.08.006.

Abstract

Jumping translocations (JT) are rare chromosomal abnormalities in which an identical copy of a chromosomal region (donor) is translocated to a different chromosome (acceptor). Chromosome 1 is often involved as donor chromosome. JTs of the long arm of chromosome 1 (1q) or parts of it are associated with a poor outcome. We report on a 72-year-old male patient with a BCR/ABL1 rearrangement positive acute lymphoblastic leukemia (common ALL, or c-ALL; FAB L2 morphology) and with additional structural and numeric aberrations. Four aberrant clones were observed after conventional cytogenetic analysis. Three of the four clones showed a JT with 1q as donor and 3q, 8q, and 22q as acceptors. To the best of our knowledge, neither JT between 1q and chromosome 3 nor JT between 1q and chromosome 22 have been described in c-ALL. This report emphasizes the frequent involvement of 1q in JT and the association with a poor prognosis.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Chromosomes, Human, Pair 1*
  • Chromosomes, Human, Pair 22
  • Chromosomes, Human, Pair 3
  • Chromosomes, Human, Pair 8
  • Fusion Proteins, bcr-abl / metabolism*
  • Humans
  • Karyotyping
  • Male
  • Precursor Cell Lymphoblastic Leukemia-Lymphoma / genetics*
  • Translocation, Genetic*

Substances

  • Fusion Proteins, bcr-abl