Abstract:The recent report of the development of leukemia in four children receiving CD34+ cells transduced with a retroviral vector expressing a corrective IL2 receptor transgene has focused interest on the mechanisms and risks of insertional mutagenesis. In our primate model, we have found evidence for highly non-random integration of retroviral vectors into areas of the genome that could activate genes implicated in leukemogenesis. In a steady-state, any proliferative “pre-malignant” advantage of cells harboring the… Show more
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