Ph-positive ALL was associated with older age (P = .01), the common-B immunophenotype characterized by a greater frequency of CD13 (alanine aminopeptidase) coexpression (P = .004), CD66c (carcinoembryonic antigen-related cell adhesion molecule 3) expression (P = .007), and CD25 (interleukin-2 receptor alpha chain) expression (P < .001) and with a lower frequency of CD15 (3-fucosyl-N-acetyl-lactosamine) expression (P < .001).
Myeloid marker coexpression was more frequent in Ph-positive ALL when compared with Ph-negative ALL (52% vs. 27% for CD13, P<0.001, and 44% vs. 27% for CD33, P=0.005).