PCR of Gene Rearrangements for the Detection of Minimal Residual Disease in Childhood ALL

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Abstract
The study of submicroscopic or minimal residual disease (MRD) in childhood acute lymphoblastic leukemia may eventually lead to stratification of therapy on an individual patient basis (reviewed in ref. 1). PCR of immunoglobulin heavy chain (IgH) and T-cell receptor (TCR) gene rearrangements provides widely informative markers (Table 1), which, in the majority of cases, are stable during the disease course (2). Generation of leukemia-specific probes using this technique allows detection of MRD at levels of one leukemic cell in 10,000 to 100,000 normal bone marrow mononuclear cells (BM MNC).

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