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Y Kaneko, JD Rowley, I Check, D Variakojis and JW Moohr
A child who had acute lymphoblastic leukemia (ALL) associated with an 8;14
chromosome translocation and with a pre-B phenotype is described. The
leukemic cells were determined to be pre-B-cells on the basis of
intracytoplasmic mu-chain immunoglobulin (cIgM+) and the common-ALL
antigen, lack of receptors for sheep erythrocytes, and lack of surface
immunoglobulin. The 8;14 translocation is frequently found in patients with
Burkitt's lymphoma and in most patients with B-cell ALL and is known to
carry a poor prognosis. Thus far, no karyotypes have been reported for
patients with pre-B-ALL. The present case indicates that a 14q+ chromosome
may provide a proliferative advantage not only to cells with a B-cell
phenotype, but also to pre-B-cells. The short survival of our patient also
suggests that the 14q+ abnormality and the pre-B phenotype may signal a
poor prognosis.
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| Copyright © 1980 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||