Oligoclonal immunoglobulin gene rearrangements in Philadelphia chromosome-positive common acute lymphoblastic leukemia

Japanese Journal of Cancer Research : Gann
T IkedaS Shirakawa

Abstract

The occurrence of more than two rearranged bands of immunoglobulin heavy chain (IgH) genes in B precursor acute lymphoblastic leukemia (ALL) has recently been documented. To elucidate the nature of such leukemias, we studied 30 patients with common ALL, including 6 patients with Philadelphia chromosome (Ph1)-positive ALL, by immunophenotyping and genotyping. In 10 of the 30, Southern blotting showed oligoclonal patterns of IgH gene arrangements, which were frequently detected in Ph1-positive ALL. In one patient of the 10, three rearranged bands of Ig kappa chain genes were detected. Ph1 abnormality and co-expression of myeloid associated antigens were found in 5 and 5 of the 10, respectively. Detection of multiple fragments of IgH genes would be suggestive of multipotent progenitor origin of these ALL.

References

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Citations

Mar 14, 2007·International Journal of Cancer. Journal International Du Cancer·Morohashi HajimeTakagaki Keiichi

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