Abstract:
:The expression of myeloid surface markers was investigated in 41 cases of untreated adult acute lymphoblastic leukemia (ALL). Nineteen cases (46%) reacted with at least one myeloid monoclonal antibody (CD15 in 16 cases, CD13 in 10 cases, CD14 in five cases, and CD33 in four cases). Double-staining confirmed the coexpression of myeloid and lymphoid markers. In addition, 35 samples were tested for CD34 expression. Fourteen of the 17 myeloid-positive cases tested were positive for CD34 vs. eight of 18 negative cases (p less than 0.05). A t(9;22) translocation was found in eight cases, and a t(4;11) translocation in two cases, all expressing CD34 and myeloid antigens. These findings confirm the high frequency of myeloid markers on the surface of adult ALL blasts, and suggest that these leukemias may originate in a poorly differentiated precursor cell with mixed differentiation capacities.
journal_name
Leukemiajournal_title
Leukemiaauthors
Guyotat D,Campos L,Shi ZH,Charrin C,Treille D,Magaud JP,Fiere Dsubject
Has Abstractpub_date
1990-09-01 00:00:00pages
664-6issue
9eissn
0887-6924issn
1476-5551journal_volume
4pub_type
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