Flow-cytometric immunophenotyping of acute leukaemia
1Department of Clinical Laboratory Diagnostics, Zagreb University School of Medicine and Clinical Center, Croatia, Yugoslavia.
Bone Marrow Transplantation
|December 1, 1989
Summary
Monoclonal antibodies and flow cytometry enhance acute leukemia diagnosis by analyzing cell markers. This immunophenotyping approach improved diagnostic accuracy in 95.6% of adult acute leukemia patients.
Area of Science:
- Hematology
- Immunology
- Oncology
Background:
- Monoclonal antibodies (Mo.Abs.) have advanced immunological distinctions in acute leukemias (AL).
- Flow cytometry offers objective, sensitive cell-marker analysis with high statistical significance due to large cell numbers.
- Multiparameter analysis enables the study of heterogeneous cell populations.
Purpose of the Study:
- To investigate the expression of leukocyte differentiation antigens in adult patients with acute leukemia.
- To evaluate the diagnostic utility of combining monoclonal antibodies and flow cytometry for acute leukemia classification.
Main Methods:
- Utilized a wide panel of commercially available monoclonal antibodies.
- Employed flow-cytometric analysis for objective and sensitive cell-marker detection.
- Analyzed a cohort of 90 adult patients diagnosed with acute leukemia.
Main Results:
- Monoclonal antibody panel established diagnosis unequivocally in 90% of cases.
- Four cases (4.4%) exhibited unusual mixed phenotypes.
- Combined immunophenotyping with cytological/cytochemical data achieved a 95.6% diagnostic rate.
- 4.4% of cases remained unclassified.
Conclusions:
- The combined approach of monoclonal antibodies and flow cytometry is highly effective for diagnosing acute leukemia.
- Immunophenotyping provides crucial data for classifying acute leukemias, including identification of mixed phenotypes.
- Integration with traditional methods enhances diagnostic precision, though a small percentage may remain challenging to classify.
