Heavy chain immunoglobulin gene rearrangement in acute nonlymphocytic
leukemia
U Rovigatti, J Mirro, G Kitchingman, G Dahl, J Ochs, S Murphy and S Stass
Samples of leukemic cell DNA from 14 children with acute nonlymphocytic
leukemia (ANLL) and 4 human myeloid leukemia cell lines were analyzed for
rearrangement in the heavy chain region of the immunoglobulin gene. The
diagnosis of ANLL was confirmed in all patients by morphological,
cytochemical, and immunologic studies. By restriction endonuclease
digestion and hybridization with cloned heavy chain immunoglobulin gene
probes for the constant (Cmu) and joining (JH) regions, the DNA of 2
patients and 1 cell line (ML-1) was found to contain rearrangements. The
DNA from the remaining 12 patients and 3 cell lines was not rearranged
(germline configuration). Both patients with apparent immunoglobulin gene
rearrangement achieved complete remission on therapy for ANLL.
Immunoglobulin gene rearrangement in phenotypically defined ANLL suggests
(1) that such changes may not be limited to lymphoid leukemia of B cell
lineage, or (2) that, in some patients, the leukemic transforming event may
involve stem cells capable of both B cell and myeloid differentiation.
Volume 63,
Issue 5,
pp. 1023-1027,
05/01/1984
Copyright © 1984 by The American Society of Hematology