A Computational Approach to the Relationship between Radiation Induced Double Strand Breaks and Translocations

  • William R. Holley
  • Aloke Chatterjee
Part of the Basic Life Sciences book series (BLSC, volume 63)


A theoretical framework is presented which provides a quantitative analysis of radiation induced translocations between the abl oncogene on CH9q34 and a breakpoint cluster region, bcr, on CH 22g11. Such translocations are associated frequently with chronic myelogenous leukemia. The theory is based on the assumption that incorrect or unfaithful rejoining of initial double strand breaks produced concurrently within the 200 kbp intron region upstream of the second abl exon, and the 16.5 kbp region between bcr exon 2 and exon 6 interact with each other, resulting in a fusion gene. For an x-ray dose of 100 Gy, there is good agreement between the theoretical estimate and the one available experimental result. The theory has been extended to provide dose response curves for these types of translocations. These curves are quadratic at low doses and become linear at high doses.


Double Strand Break Chronic Myelogenous Leukemia Philadelphia Chromosome Breakpoint Cluster Region Translocation Probability 
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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • William R. Holley
    • 1
  • Aloke Chatterjee
    • 1
  1. 1.Division of Life Sciences, Lawrence Berkeley LaboratoryUniversity of California, BerkeleyBerkeleyUSA

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