Abstract
Recently the immunoglobulin heavy chain (IgH) gene rearrangement in B cell malignancies has been analyzed. Clonality can be determined using the polymerase chain reaction (PCR). Little attention, however, has been given to the relationship between prognosis and IgH gene rearrangement in patients with acute myelogenous leukemia (AML). In this study, we examined IgH gene rearrangement in 35 untreated AML patients by PCR. PCR was performed using consensus heavy chain complimentarity-determining region (CDR)-3 primers. Clonal IgH gene rearrangement was detected in 14 patients (40%). Four of five patients (80%) who were positive for B cell markers had clonal IgH gene rearrangement. Ten of 30 B cell antigen-negative patients (33%) also showed IgH rearrangement. All patients were treated with a daunorubicin-based regimen, resulting in complete remission for 29 patients (83%). Sixty-four percent of those with IgH rearrangement and 95% of those without rearrangement had complete remission. Overall survival of IgH-PCR positive and negative patients at 25 months was 29 and 88%, respectively. IgH-PCR positivity may be a poor prognostic factor in AML.
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Kyoda, K., Nakamura, S., Matano, S. et al. Prognostic significance of immunoglobulin heavy chain gene rearrangement in patients with acute myelogenous leukemia. Leukemia 11, 803–806 (1997). https://doi.org/10.1038/sj.leu.2400662
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DOI: https://doi.org/10.1038/sj.leu.2400662
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