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CD34 antigen expression in children with philadelphia chromosome‐positive acute lymphoblastic leukemia
Author(s) -
Azuma Eiichi,
Umemoto Masakazu,
Kubo Masako,
Ohta Yutaka,
Zhang ShaoLi,
Komada Yoshihiro,
Ito Masahiro,
Sakurai Minoru
Publication year - 1991
Publication title -
cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.052
H-Index - 304
eISSN - 1097-0142
pISSN - 0008-543X
DOI - 10.1002/1097-0142(19910315)67:6<1565::aid-cncr2820670618>3.0.co;2-k
Subject(s) - cd34 , immunophenotyping , leukemia , acute leukemia , medicine , myeloid leukemia , myeloid , progenitor cell , stem cell , bone marrow , immunology , antigen , haematopoiesis , cancer research , biology , microbiology and biotechnology
One characteristic of Philadelphia chromosome (Ph')‐positive acute leukemia is the occasional presence of both lymphoid and myeloid features in the same leukemia. This phenomenon supports the theory that this subtype of acute leukemia arises from lymphoid‐myeloid stem cell, pluripotent progenitors. Very few reports, however, describe the immunophenotype, especially CD34 antigen, of Ph'‐positive acute lymphoblastic leukemia (ALL). It has been shown that CD34, the human progenitor cell antigen, is found on 1% or less of normal human bone marrow cells, approximately 30% of acute leukemias, and multipotent progenitor cells; CD34 is not found on normal peripheral blood cells. A high frequency of CD34 expression was found in children with Ph'‐positive ALL: CD34 was positive for all six patients tested, and one had an acute mixed‐lineage leukemia. These findings suggest the involvement of a pluripotent stem cell in Ph'‐positive ALL.