[Three cases of hematologic malignancies with jumping translocation]

We treated three cases of hematologic malignancies (Burkitt's lymphoma, ALL (L3), AML (M0)) with jumping translocations. Tumor formation was easily occurred in all three cases. The location of the jumping translocation was 1q21 in all three cases. Hematologic malignancies with jumping translocation tend to be B-cell lineage and have poor prognosis. The significance of jumping translocation is unknown yet, but it seems that jumping translocation is related to the tumor progression, rather than tumorigenesis. So that the intensive therapy including bone marrow transplantation must be considered.