Immunophenotyping pediatric leukemias in Kelantan, Malaysia

Area of Science:

• Pediatric Hematology
• Immunophenotyping
• Leukemia Research

Background:

• Acute leukemia is a significant health concern in children.
• Immunophenotyping is crucial for classifying leukemia subtypes.
• Data on pediatric acute leukemia in Malaysia is limited.

Purpose of the Study:

• To review immunophenotyping results of pediatric acute leukemia cases in Kelantan, Malaysia.
• To characterize the immunophenotypic profiles of acute lymphoblastic leukemia (ALL) and acute myeloblastic leukemia (AML) in children.
• To determine the incidence of mixed-lineage leukemias.

Main Methods:

• Retrospective review of 45 pediatric acute leukemia cases diagnosed between January 1994 and June 1997.
• Analysis of immunophenotyping data, including cell lineage and marker expression (CD10, CD33, CD13).
• Classification based on World Health Organization (WHO) or similar criteria.

Main Results:

• Acute lymphoblastic leukemia (ALL) accounted for 80% of cases, while acute myeloblastic leukemia (AML) comprised 20%.
• In ALL cases, 3% were B-cell and 22% were T-cell origin; 96% of B-lineage ALL were CD10 positive.
• All AML cases expressed CD33, and 78% were positive for CD13. Mixed-lineage leukemias were observed in 13.8% (My+ ALL) and 11.1% (Ly+ AML).

Conclusions:

• Immunophenotyping is essential for accurate diagnosis and classification of acute leukemia in children.
• The study provides valuable data on the immunophenotypic characteristics of pediatric ALL and AML in a Malaysian population.
• Further research is needed to understand the implications of mixed-lineage leukemias.