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 ORIGINAL ARTICLE
Year : 2016  |  Volume : 53  |  Issue : 3  |  Page : 349-352

Applicability of a single 5 color cytoplasmic markers tube as primary panel for immunophenotyping of acute leukemia: A Gujarat Cancer and Research Institute experience


1 Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India
2 Department of Cancer Biology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat, India

Correspondence Address:
BP Parikh
Department of Pathology, Gujarat Cancer and Research Institute, Ahmedabad, Gujarat
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-509X.200659

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INTRODUCTION: Flow cytometry is highly sensitive for detection and quantitative analysis of surface and intracellular antigens in malignant hemopoietic cells. Immunophenotyping is a routine practice for classification and lineage assignment of acute leukemia. In the present study, our aim is to identify the role of a single 5 color, CD45, myeloperoxidase (MPO), cCD79a, cCD3, and Tdt, cytoplasmic markers combination as a primary tube. We compared with final diagnosis on the basis of morphology, cytochemistry, and primary and secondary panels of immunophenotyping and also with other study. MATERIALS AND METHODS: We have included 455 new cases of acute leukemias with applied primary and secondary panels of markers for immunophenotyping. We analyzed sensitivity and specificity of different subsets with combination of positive and negative markers. RESULTS: MPO was positive in 61.4% of acute myeloid leukemia (AML) cases. All 184 (100%) cases of the AML were negative for cCD3 and cCD79a co-expression. cCD79a expression was highly sensitive as 98.5% B-acute lymphoblastic leukemia (B-ALL) expressed it. cCD3 expression was detected in 100% cases of T-ALL, and its co-expression was not seen in B-ALL and AML. CONCLUSION: Our study indicates that there was very good correlation of 5-color cytoplasmic tube-based diagnosis versus final diagnosis based on morphology, cytochemistry, and flow cytometry. We can use this 5-color cytoplasmic tube method to make immunophenotyping cost-effective.






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