Japanese Journal of Clinical Oncology, Vol 28, Issue 6 396-400, Copyright © 1998 by Foundation for Promotion of Cancer Research
N Wakimoto, Y Mukai, N Kuwada, T Yamashita, T Matsumura, Y Nakamura, F Kimura, K Sato, N Nagata and K Motoyoshi
A 48-year-old patient was admitted to our hospital for leukocytosis. The
blast cells were positive for peroxidase and he was tentatively diagnosed
as acute myeloid leukemia according to the French-American-British
criteria. By flow cytometry, the bone marrow cells were positive for CD10,
CD13, CD33 and HLA-DR, but two-color analysis revealed that most of the
CD13- and CD33-positive cells did not express CD10. The marrow cells had
Philadelphia chromosome with no additional abnormalities. Major bcr-abl
fusion gene was observed by the reverse transcriptase-polymerase chain
reaction method. Southern blot analysis disclosed rearrangement of both
immunoglobulin heavy chain and T-cell receptor beta chain genes. He
received combined chemotherapy for myeloid lineage and lymphoid lineage,
but the response was quite poor. He died 64 days after admission due to
pulmonary bleeding. Although the association of Ph1 with multilineage
differentiation is unclear, our case has significant implication for
further investigation of the relationship between Ph1-positive cells and
lineage selection.
ORIGINAL ARTICLE
Dual rearrangement of immunoglobulin and T-cell receptor genes in a case of Philadelphia chromosome-positive acute leukemia
The Third Department of Internal Medicine, National Defense Medical College, Tokorozawa, Saitama, Japan.
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