Emergence of a cell line with extreme hypodiploidy in blast crisis of
chronic myelocytic leukemia
RM Como and PR Graze
Cytogenetic studies in a patient with chronic myelocytic leukemia (CML)
demonstrated the emergence of an extremely hypodiploid cell line at the
time of blast crisis, a modal chromosome number of 35, with the modal
karyotype 35,XY, -3, -4, -5, -7, -9, -11, -12, -13, -15, -16, -17, -19,
-20, -22, + t(9;22) (q34;q11, + Mar1, + Mar2, + Mar3. Giemsa-banding
confirmed complex chromosome rearrangements and demonstrated distinct
banding patterns for the marker chromosomes. Cytologic characteristics of
the leukemia blasts were predominantly myeloid. There was no important
clinical response to chemotherapy, including vincristine and prednisone, or
to radiotherapy.
Volume 53,
Issue 4,
pp. 707-711,
04/01/1979
Copyright © 1979 by The American Society of Hematology