Aberrant expression of CD markers in AML in patients attending RIMS, Ranchi - An observational study

A BSTRACT Introduction: 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. Materials and Methods: Diagnosed cases of AML were included in this study to study the aberrant expression using multiparametric flow cytometry. Results: 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. Conclusion: Immunophenotyping has a significant role in diagnosis and predicting prognosis of hematopoietic malignancies in the absence of more advanced diagnostic tools like cytogenetics.