Abstract
Acute myeloid leukaemia (AML) is a tumour of hematopoietic progenitors caused by acquired oncogenic mutations that impede differentiation, leading to the accumulation of immature myeloid blasts in the marrow. Aberrant phenotype is a phenomenon in which lymphoid-associated and other myeloid lineage markers are expressed in myeloblasts or myeloid-associated markers are expressed in lymphoblasts. Diagnosed cases of AML were included in this study to study the aberrant expression using multiparametric flow cytometry. Out of a sample size of 50, 30 cases expressed aberrant CD markers. Male: Female ratio was 0.76. Majority of cases belonged to the age group >60 years of age. CD 7 was overall the most common aberrant CD marker. Immunophenotyping has a significant role in diagnosis and predicting prognosis of hematopoietic malignancies in the absence of more advanced diagnostic tools like cytogenetics.
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